The R740 16-Bay 2.5" is the configuration we treat as the default 2U Dell PowerEdge build for general enterprise production. Sixteen 2.5" hot-swap front bays on a SAS/SATA backplane with SAS expander, dual 1st or 2nd Generation Intel Xeon Scalable processors, 24 DDR4 DIMM slots, the full Network Daughter Card mezzanine, and up to 8 PCIe Gen3 expansion slots in the 2U envelope. This is the chassis we recommend when the workload calls for high-density SFF storage, a generous PCIe slot budget, and meaningful GPU or accelerator capacity in a Dell 2U.

The 16-Bay 2.5" is the primary R740 build on the site and the one customers reach for most often when the workload needs more than the R640 1U envelope delivers. The other R740 variants exist for specific design points: the 8-Bay 2.5" trades drive count for simpler cabling and slightly better thermal and PCIe headroom on top-bin CPU plus GPU builds, and the 8-Bay 3.5" swaps SFF for LFF when bulk capacity matters more than IOPS. For storage-dense builds beyond 16 bays the R740xd family is the right step.

To configure a build, call 1-800-778-1545 or use the quote form below. Every refurbished unit ships under our 180-day warranty with 12+ hour burn-in testing, and volume pricing starts at 5 units.

Where the R740 16-Bay 2.5" Fits in the Family

The R740 is Dell's 14th gen 2U dual-socket mainstream platform, the direct counterpart of the HPE ProLiant DL380 Gen10 on the Intel Purley platform. Across the R740 family, the three chassis variants we stock are differentiated by front-bay configuration. The 16-Bay 2.5" is the high-density SFF flagship: sixteen front bays, the full 8-slot PCIe Gen3 expansion budget, multi-GPU and FPGA support up to the chassis envelope, and the platform's full storage controller flexibility.

The 8-Bay 2.5" drops to eight front bays with no SAS expander, which simplifies cabling and gives slightly more thermal and PCIe headroom for top-bin CPU plus GPU builds where storage count is not the constraint. The 8-Bay 3.5" swaps the SFF backplane for eight LFF bays, the right call for bulk capacity in 2U. For storage-dense deployments past 16 bays, the R740xd family (12-Bay 3.5", 24-Bay 2.5", 24-Bay NVMe) is the next step.

This is the HPE counterpart to the HPE ProLiant DL380 Gen10 16-Bay 2.5": 2U dual-socket Purley, same generation, same workload positioning, equivalent feature set. If you cross-shop HPE and Dell, the two platforms are direct equivalents for the same set of decisions. The choice usually comes down to existing fleet standardization (iDRAC9 vs iLO 5, OpenManage vs HPE OneView) rather than platform capability.

Storage - 16 2.5" Bays

Sixteen 2.5" hot-swap front bays on a SAS/SATA backplane with integrated SAS expander. The expander is what lets a single PERC controller address all sixteen bays without consuming additional controller slots, and it is a meaningful architectural advantage over the 8-Bay backplane on this chassis. The backplane supports the full range of SAS and SATA drives in any combination. Common storage profiles we quote:

• All-SAS SSD: High-endurance dual-port storage for converged workloads running databases and applications on local storage. SAS SSDs deliver better write endurance and dual-path reliability than SATA equivalents in sustained-write environments.
• Mixed SAS HDD plus SATA SSD: Cost-effective tiered storage. SSDs for hot data and OS-adjacent volumes, 10K SAS HDDs for warm or cold data. Appropriate for file servers, virtualization hosts with mixed VM profiles, and general application workloads.
• All-SATA SSD: Good balance of performance and cost for read-dominant workloads. Lower endurance than SAS SSD but adequate for most enterprise application serving scenarios at 16-bay scale.
• vSAN OSA disk groups: The 16-bay layout is a textbook vSAN OSA node geometry: split across multiple disk groups with a cache-tier SSD plus capacity-tier SSDs in each group. Pair with the HBA330 for pass-through and let vSAN manage redundancy.

NVMe note: The R740 16-Bay 2.5" backplane is SAS/SATA only. There is no native front NVMe option on this chassis. NVMe is possible via PCIe expansion cards in the rear slots, but if NVMe is the primary storage tier the R740xd 24-Bay 2.5" NVMe variant is the right chassis, not this one with an NVMe workaround. This is the most common configuration question we field on the R740 and we would rather state it upfront than after a purchase order is issued.

Boot drive recommendation - BOSS module: Dell's Boot Optimized Storage Subsystem is a hardware-RAID 1 pair of M.2 SATA SSDs on a dedicated PCIe card. We recommend it as the standard boot device on every R740 production build. It keeps the OS separate from the data pool, frees all sixteen front bays for data, and provides hardware-mirrored boot redundancy without consuming a front bay or a RAID controller channel.

Storage Controllers

The R740 storage controller family covers the full range from boot-only software RAID through high-end battery-backed hardware RAID with non-volatile cache. At 16-bay scale, controller choice is more consequential than on the 8-bay variants because write-cache sizing matters more on a larger array and the failure-domain of a single controller spans more drives. Pick the controller against the workload, not the budget:

• PERC H740P (8 GB NV cache, battery-backed): The production storage default on this chassis. Non-volatile write cache with battery protection delivers the best write latency and protects cached data through power events. The 8 GB cache size is appropriately sized for a 16-drive SAS/SATA array and absorbs RAID 5 or RAID 6 parity calculations cleanly. Essential for databases and transactional workloads on local storage.
• PERC H730P (2 GB cache, battery-backed): Solid general-purpose choice for mixed or read-heavy workloads where the H740P premium is not warranted. The 2 GB cache is on the small side for sustained write activity across sixteen drives; quote H740P unless cost is the constraint and the workload is read-dominant.
• PERC H730 (1 GB cache, battery-backed): Viable budget option, generally a downgrade vs the H730P or H740P on Cascade Lake workloads. Appears on the secondary market frequently as a 13th-gen carryover (Dell maintained Mini-PERC slot compatibility into 14th gen, so refurbished R740 units sometimes ship with the H730 already installed from prior deployments). The 1 GB cache is undersized for sustained write workloads across sixteen drives. Quote it when budget is the driving constraint and write performance is not load-bearing; otherwise the H730P is the small step up.
• PERC H330 (no cache): Entry-tier hardware RAID for light workloads. Not recommended on a production 16-drive array carrying meaningful write load.
• HBA330 (pass-through HBA): For software-defined storage (vSAN OSA, Storage Spaces Direct, Ceph, ZFS) where the software manages redundancy. The textbook vSAN OSA node on this chassis runs the HBA330 with sixteen SSDs split across multiple disk groups. Never use hardware RAID on top of a software RAID stack.
• S140 (software RAID via chipset): Dev/test and light workloads only. Not a production storage recommendation, particularly at 16-bay scale.

The controller mounts in a dedicated Mini-PERC slot, not a general PCIe slot, so on this chassis you keep the full 8-slot PCIe budget available for networking, HBAs, and GPUs regardless of which controller you select.

Processors

CPU options: Dual 1st Generation Intel Xeon Scalable (Skylake-SP, 2017) or 2nd Generation Intel Xeon Scalable (Cascade Lake-SP, 2019), socket LGA 3647 on the Intel C620-series (Lewisburg) chipset. Skylake and Cascade Lake are drop-in compatible on the same R740 motherboard; the difference is generation, not platform. Up to 28 cores per CPU for a maximum 56 cores and 112 threads dual-socket. TDP range 85W (Bronze 3104) through 205W (Platinum 8280). Same Purley platform as the HPE ProLiant DL360 Gen10 and DL380 Gen10.

Our SKU recommendations: Intel Xeon Gold 6230 (20 cores, 2.1 GHz base, 125W TDP) for balanced general-purpose virtualization and mixed-workload consolidation, which is the most common R740 16-Bay workload pattern. For per-core licensed workloads (SQL Server, Oracle), Gold 6248 (20 cores, 2.5 GHz base, 150W) delivers the per-core clock that licensing math justifies. For high-VM-density VDI clusters where sessions-per-host is the metric, Gold 6230R (26 cores, 2.1 GHz, 150W) is the workload-specific pick. For top-bin compute (HPC, dense consolidation), Gold 6248R (24 cores, 3.0 GHz, 205W) and Platinum 8280 (28 cores, 205W) deliver the peak; the R740 chassis has the thermal envelope to handle these SKUs cleanly where the R640 1U is more marginal.

Heatsink requirement on top-bin CPUs: Any CPU above 150W TDP, including the 165W Gold 6146, 6144, 6244, and 6246, and the 205W Gold 6248R / 6258R / Platinum 8280, requires Dell's high-performance heatsink kit and high-performance fan kit. The standard heatsink will boot the system but throttle under sustained load. We specify this correctly on every high-TDP build; it is the most common configuration error we see on self-built R740 systems and the one most likely to result in a "the server runs fine for the first hour and then performance falls off a cliff" support call. The 2U chassis has more thermal headroom than the 1U R640, but the heatsink kit threshold is the same.

Single-socket warning: A single-CPU R740 build is supported but cuts the platform in half. With one CPU populated only 12 of the 24 DIMM slots are accessible, half the PCIe lanes are inactive, the NDC routes through the populated CPU, and several PCIe slots become unavailable depending on riser configuration. Single-socket is a real option for development, lab, and lightly-used edge nodes, but it is not a cost-saving move for production. If the workload justifies a 2U chassis with 16 bays, it justifies the second CPU.

Memory

Architecture: 24 DDR4 DIMM slots organized as 12 slots per CPU across 6 memory channels at 2 DIMMs per channel. The 6-channel layout is the Purley platform's defining memory feature and the reason full DIMM population at 2 DPC consistently outperforms partial population at higher speed on memory-bandwidth-sensitive workloads. On a 16-Bay R740 the most common workloads (virtualization with high VM density, VDI at scale, mixed enterprise consolidation) are all memory-bandwidth-sensitive.

Supported DIMM types:

• RDIMM (registered): The standard enterprise choice. Up to 64 GB per DIMM, 1.5 TB total with full population. Best price per gigabyte for capacities up to 1.5 TB.
• LRDIMM (load-reduced): For builds that need more than 1.5 TB. Up to 128 GB per DIMM, 3 TB total. Modest latency premium vs RDIMM but the only path past 1.5 TB on this platform without Optane. Common on high-density VDI builds and SQL Server consolidation hosts where 3 TB backs many concurrent VMs or large in-memory working sets.
• Intel Optane Persistent Memory (PMem): Cascade Lake L-series CPUs only (Gold 5215L, 6240L, 6248L, etc.). App Direct mode for persistent storage tier, Memory Mode for transparent capacity expansion. Up to 7.68 TB combined with LRDIMM. Use case is specific (large in-memory databases, SAP HANA scale-up, transparent memory expansion on high-VM-density hosts); we will tell you directly when Optane is the right answer and when it is not.
• NVDIMM-N: Niche persistent memory option, paired with RDIMM only, up to 12 modules at 16 GB each for 192 GB total. Rarely the right answer in 2026; Optane is the more common persistent-memory path on this platform.

Memory speed by population: DDR4-2933 on Cascade Lake Gold 6200 and 5222 SKUs at 1 DPC, DDR4-2666 on other Cascade Lake SKUs and at full 2 DPC population, DDR4-2666 on all Skylake SKUs. Full 24-DIMM population at 2 DIMMs per channel drops effective speed to DDR4-2666 from the 2933 MT/s peak even on Gold 6200 / 5222 CPUs. The full-channel bandwidth advantage over partial population is measurable under load and consistently worth the speed-step tradeoff; this is the call we make almost every time. Partial population (for example, only 6 DIMMs per CPU at 1 DPC) leaves six channels idle and is the most common memory configuration mistake we see on R740 deployments.

Mixing rules: Within a channel, DIMM ranks must match, capacity must match, and timing must match. Across channels Dell allows broader mixing but we do not quote mixed configurations for production; matched-set DIMMs avoid subtle stability issues and make later memory expansion straightforward.

Networking and PCIe Expansion

Network Daughter Card (NDC): Dell's NDC is the R740's primary networking position, the architectural equivalent of HPE's FlexibleLOM on the DL380 Gen10. The NDC mounts in a dedicated mezzanine slot and does not consume any PCIe slot. NDC options:

• 4x 1 GbE: Entry-tier, suitable for management networks, branch office deployments, or workloads where 1 GbE is genuinely sufficient. Not recommended for primary enterprise production traffic on a 16-Bay chassis.
• 2x 10 GbE SFP+ plus 2x 1 GbE: The baseline for most enterprise virtualization and application servers. 10 GbE for production traffic, 1 GbE ports available for management or backup networks.
• 4x 10 GbE SFP+: Quad-port 10 GbE for environments requiring storage fabric separation, dedicated vMotion and backup networks, or aggregated bandwidth. The common NDC on converged virtualization hosts.
• 2x 25 GbE SFP28: Recommended for storage-intensive workloads, vSAN OSA all-flash nodes, high-density VDI, and any environment where local storage I/O competes with application traffic on shared links. The right NDC for 16-bay all-SSD builds.

PCIe expansion: Up to 8 PCIe Gen3 slots with both CPUs populated, depending on riser configuration. The R740 supports multiple riser variants that trade slot count against form factor (low-profile vs full-height) and against the use of rear drive bays on R740xd. On the 16-Bay 2.5" specifically, no rear drive assembly consumes riser space, so the full 8-slot budget is structurally available. Common PCIe builds: dual 25 GbE NIC plus add-in 100 GbE NIC plus external SAS HBA plus multi-T4 GPU configuration, or quad NIC plus dual FPGA for inference at the edge, or full PCIe budget allocated to GPU compute up to the chassis envelope.

The 8-slot PCIe budget is one of the main reasons the R740 is the volume 2U platform in our 14th gen catalog: the slot count gives meaningful headroom for networking, accelerators, and external storage interconnects that the 1U R640 cannot accommodate.

GPU Support

The R740 2U envelope is one of the better GPU platforms in the 14th gen Dell lineup. Per the Dell R740 / R740xd Technical Guide, the chassis supports up to 3 double-width 300W GPUs (V100 PCIe, A30, T4 in double-wide form factor), up to 6 single-width 150W GPUs (T4 standard, P4, M10), or up to 4 single-width FPGA cards (3 double-width FPGA). The slot count and thermal envelope are genuinely respectable for a 2U Cascade Lake-era platform.

The honest framing for 2026: Even with the slot count available, the R740 is not the platform we would recommend for serious multi-GPU AI work. Three reasons. First, the PCIe Gen3 ceiling bottlenecks modern GPUs: a current-gen H100 or L40S is throttled to roughly half its host bandwidth on Gen3 lanes vs a Gen4 or Gen5 platform. Second, Cascade Lake's age means CPU-side preprocessing, data loading, and PCIe coherency overheads are dated relative to what current ML frameworks expect. Third, power and thermal headroom on storage-equipped configurations limits which 300W cards can run reliably under sustained load when sixteen bays of SSD are also drawing power. For serious GPU work (LLM training, multi-GPU inference at scale, modern CUDA workloads), we route deployments to current production hardware. The R740 16-Bay is well-suited for VDI with vGPU (T4-class cards for user sessions), modest single-card or dual-card inference, video transcoding, and CAD or visualization clusters where Gen3 bandwidth is acceptable.

GPU-equipped configurations require an enablement kit (auxiliary power cables, GPU brackets, riser-specific cabling). We add the kit to every R740 GPU build by default. The thermal restriction tables in the R740 Technical Guide govern the specific GPU plus CPU combinations that are validated; we work through that table at quote time on any borderline build.

Management - iDRAC9 Generation

iDRAC9 Enterprise: Required for production deployment. Remote KVM, virtual media, predictive analytics, Group Manager for fleet-scale operations, Quick Sync 2 (wireless mobile management), and Silicon Root of Trust. iDRAC9 Express is not suitable for unattended datacenter deployment because the remote console functionality is restricted to local console access only. We spec Enterprise on every R740 build.

Security baseline: Silicon Root of Trust anchors firmware verification in immutable silicon (the Dell equivalent of HPE iLO 5's hardware-anchored trust chain). System Lockdown mode prevents unauthorized firmware changes after deployment. Cryptographically signed firmware updates and Secure Boot are standard. TPM 2.0 module supported and recommended for any deployment with NIST 800-171, CMMC, FedRAMP, HIPAA, or PCI DSS compliance framework requirements.

Lifecycle Controller: Bundled with iDRAC9. Provides BIOS and firmware update orchestration, hardware inventory reporting, and OS deployment via integrated drivers. Worth taking the time to learn on first deployment; it saves real time at every subsequent firmware refresh.

OpenManage Enterprise: The Dell fleet management plane. Integrates with iDRAC9 and Lifecycle Controller across the fleet for centralized firmware compliance, configuration drift detection, and warranty status tracking. Worth the integration effort on any fleet over 20 R740 units.

Power and Cooling

PSU options: Hot-swap redundant Dell Flex Slot PSUs in 495W Platinum, 750W Platinum, 750W Titanium, 1100W Platinum, 1600W Platinum, 2000W Platinum, and 2400W Platinum. The 2000W and 2400W tiers are specific to the R740 and R740xd 2U platform; they are not available on the R640 1U. They exist primarily for multi-GPU configurations and dense top-bin CPU builds. Always spec redundant; we do not quote single-PSU R740 builds for production.

• Light (Silver CPUs, partial RAM, 4 SSDs, no GPU): 2x 495W Platinum, peak draw approximately 280W
• Balanced (Gold 6230, full RAM, 16 SAS SSDs, no GPU): 2x 750W Platinum, peak draw approximately 520W
• Heavy (Gold 6248, full RAM, 16 all-SSD plus single T4 GPU): 2x 1100W Platinum, peak draw approximately 780W
• Multi-GPU (Gold 6248R, full RAM, 16 SSDs, 3x double-width 300W GPUs): 2x 2000W Platinum or 2x 2400W Platinum for headroom

On efficiency tier: 750W Titanium-rated PSUs are worth the modest premium for large multi-unit deployments. Efficiency savings at scale add up quickly, and a PSU running at 50 percent capacity runs cooler and lasts longer than one running at 90 percent. When in doubt on sizing, size up.

Thermal: Six hot-plug redundant fans standard in the 2U chassis. ASHRAE A3 (40C) extended ambient support with the high-performance fan kit on most configurations. The 2U envelope gives the R740 meaningfully more thermal headroom than the R640 1U on top-bin CPU and multi-GPU configurations; Dell's thermal restriction tables in the R740 Technical Guide are the authoritative reference for any borderline build, and we work through that table with you at quote time when the configuration is close to a limit.

Physical Specs & Platform Notes

• Form factor: 2U rack server. Approximately 86.8mm H x 482mm W x 715mm D with bezel and standard cable management. Fits standard 1000mm-depth datacenter cabinets with cable management arm. Standard 19-inch rack mount with Dell ReadyRails II.
• PCIe expansion: Up to 8 PCIe Gen3 slots with both CPUs populated, depending on riser configuration. The 16-Bay 2.5" chassis preserves the full riser budget structurally; riser choice trades slot count against full-height vs low-profile form factor. Riser configuration is locked at order time and not field-swappable without chassis disassembly; we confirm the right riser against your PCIe card list at quote time.
• Parts availability: Excellent. The R740 is one of the highest-volume Dell PowerEdge platforms ever shipped, and the 16-Bay 2.5" backplane is the most common variant. PERC controllers, NDC cards, riser kits, backplanes, SAS expanders, fan modules, and PSUs are all readily available in the secondary market, and Dell ProSupport parts coverage remains active on most R740 service contracts in 2026.
• Accessories we recommend: Dell LCD bezel for the R740 2U chassis (confirm part number at quote time against your chassis revision and whether security bezel is required), Dell ReadyRails II static or sliding rails, and the Dell cable management arm. The CMA is genuinely worth the cost on production deployments; rear-of-rack service on a fully-cabled 2U is meaningfully easier with it installed.
• Platform notes: CPU hot-plug is not supported (system must be powered down for CPU replacement). NDC swap requires powered-down access. Bay configuration is welded into the chassis: an 8-Bay R740 cannot be field-upgraded to a 16-Bay R740 because the drive cage is part of the physical chassis; if you anticipate growth past 8 bays, buy the 16-Bay now. BIOS NVMe bifurcation settings must be configured correctly if NVMe expansion cards are added to the rear PCIe slots. Thermal restriction tables in the R740 Technical Guide govern any top-bin CPU plus multi-GPU or high-ambient deployment.

Our Assessment

Where it excels: Mid-density to high-density virtualization clusters running vSphere or Hyper-V where 16 SFF bays of mixed SAS or SATA storage carry the production VMs. vSAN OSA all-SSD nodes where the HBA330 plus 16-drive disk-group geometry is the textbook configuration. VDI clusters on Horizon or Citrix with T4-class vGPU acceleration for user sessions. SQL Server and Oracle consolidation hosts where per-core licensing math justifies Gold 6248 or higher SKUs and the 2U thermal envelope handles the top-bin CPUs cleanly. Mixed enterprise consolidation where the buyer wants meaningful PCIe slot budget, GPU envelope, and storage flexibility in a single 2U chassis. Capacity-add nodes to an existing R740 fleet where iDRAC9 firmware version, PERC controller family, and OpenManage tooling are already standardized.

Where to look instead: If your workload is compute-first with storage on a SAN or NAS and 8 local bays is enough, the R740 8-Bay 2.5" gives you simpler cabling and slightly more thermal and PCIe headroom for top-bin CPU plus GPU builds. If your storage tier is bulk capacity on spinning disk, the R740 8-Bay 3.5" is the LFF answer in the same R740 chassis, or the R740xd 12-Bay 3.5" for higher LFF bay counts. If your storage architecture is NVMe-first, the R740xd 24-Bay 2.5" NVMe variant is the right chassis. If your workload needs serious multi-GPU AI compute, modern CUDA frameworks, or PCIe Gen4 bandwidth, step up to the R750 (15th gen) or R760 (16th gen); the R740's PCIe Gen3 ceiling is the wrong platform for that work. If 1U is a hard rack-density constraint and the workload fits in fewer bays, the R640 10-Bay 2.5" is the 1U companion.

Bottom line: The 16-Bay 2.5" is the R740 we recommend by default. A senior IT technician building a 14th gen Dell 2U for general enterprise production, virtualization with high VM density, vSAN OSA, or mixed consolidation lands on this chassis nine times out of ten. It is the highest-velocity 14th gen 2U SKU on our site for a reason: the platform is mature, parts availability is excellent, and the 8-slot PCIe budget plus 16-bay storage gives the chassis enough flexibility to handle the broad middle of enterprise workloads without compromise. For specialty needs (NVMe-first, LFF capacity, multi-GPU AI) the R740xd or current-generation platforms are the right call, but for "give me a reliable 2U Dell that does the job," this is the build.

Where the R740 Fits in 2026

The R740 launched in 2017 and received its 2nd Generation Intel Xeon Scalable refresh in 2019. As of 2026 the platform is 2 generations behind the R750 (15th gen, Ice Lake-SP, 2021) and 3 generations behind the current production R760 (16th gen, Sapphire Rapids and Emerald Rapids, 2023 to 2024). Dell ProSupport contracts on R740 hardware are still available on most config tiers but are approaching end-of-extended-support; third-party maintenance is the standard production support path for most R740 deployments in 2026. We are not going to soft-pedal the R740's age: for greenfield mission-critical deployments where PCIe Gen4 or Gen5 bandwidth, DDR5 memory speed, or Sapphire Rapids per-core gains materially change the workload economics, the R760 step is the right answer.

The R740 16-Bay 2.5" earns its place in 2026 when one of these patterns applies: capacity-add to an existing 14th gen Dell fleet where iDRAC9 firmware version, PERC controller family, and ProSupport contract terms are already standardized; lab, dev, and staging mirrors of production R740 fleets where matching the production platform is more valuable than running newer hardware; budget-driven workloads where the price delta vs R750 or R760 (typically $2,000 to $4,500 per unit on the secondary market for comparable configurations) materially changes the deployment math; certified workload contexts where the application vendor has explicitly validated the 14th gen platform and re-certification on Ice Lake or Sapphire Rapids is not yet complete; and operational standardization in environments where the existing fleet runs on iDRAC9, Lifecycle Controller, and OpenManage and the operations team has invested in 14th gen tooling.

Honest Limitations

• No front NVMe. The 16-Bay 2.5" backplane is SAS/SATA only via the SAS expander. NVMe is possible via PCIe expansion cards but is a workaround, not the design point. For native front NVMe in the R740 family, the R740xd 24-Bay 2.5" NVMe variant is the right chassis. This is the single most common configuration mistake we see on R740 quotes.
• PCIe Gen3 ceiling. All slots and all backplane lanes are PCIe 3.0. Workloads that would saturate Gen3 (high-end NVMe arrays, 100 GbE adapters at line rate, modern accelerator cards) will be bottlenecked. The upgrade path is the R750 (15th gen, Gen4) or R760 (16th gen, Gen5).
• Memory speed drops at 2 DPC on Cascade Lake. Full 24-DIMM population drops effective speed to DDR4-2666 from the 2933 MT/s peak on Gold 6200 / 5222 SKUs. We consider this an acceptable tradeoff for the bandwidth gain from full-channel population, but it is a real number worth knowing on memory-bandwidth-sensitive applications.
• High-TDP CPUs require performance heatsinks. Any CPU above 150W TDP, including 165W and 205W SKUs, needs the high-performance heatsink kit and high-performance fan kit. The standard heatsink will boot the system but throttle under sustained load.
• GPU effectiveness is bandwidth-limited, not slot-limited. The chassis supports up to 3 double-width 300W GPUs, but PCIe Gen3 lanes throttle current-gen GPUs (H100, L40S, A100) to roughly half their potential host bandwidth vs Gen4 or Gen5 platforms. For VDI with T4-class GPUs the Gen3 ceiling is not a problem; for serious multi-GPU AI compute it is. Match the GPU to the platform.
• Riser configuration locks PCIe slot mix. Riser choice is made at order time. Swapping risers post-deployment requires chassis disassembly. We confirm riser config at quote time based on your PCIe card list.
• Bay configuration is welded into the chassis. An 8-Bay R740 cannot be field-upgraded to a 16-Bay R740 by adding a backplane; the drive cage is part of the physical chassis. If you anticipate growth past 8 bays, buy the 16-Bay now.
• 14th gen, not current production. Dell's current 2U production platform is the R760. The R740 represents strong refurbished value in 2026 but is not new hardware; we are transparent about that and would rather state it upfront than after a purchase order is issued.

Workload Fit

Where to Look Instead

• Compute-first, simpler cabling, fewer drives? The R740 8-Bay 2.5" drops to eight front bays with no SAS expander and gives slightly more thermal and PCIe headroom for top-bin CPU plus GPU builds.
• Bulk LFF capacity in 2U? The R740 8-Bay 3.5" takes eight 3.5" hot-swap LFF drives for high-capacity spinning disk builds in the R740 chassis. For more LFF bay count, the R740xd 12-Bay 3.5" is the storage-dense step up.
• Native NVMe across the front bays? The R740xd 24-Bay 2.5" NVMe variant is the all-NVMe specialist in the R740xd family. The 16-Bay 2.5" does not support front NVMe.
• 1U companion for lower-density deployments? The R640 10-Bay 2.5" is the 1U companion to the R740 on the same Intel Purley platform. Same CPU family, same memory architecture, half the PCIe budget and lower bay count.
• HPE-side equivalent? The HPE ProLiant DL380 Gen10 16-Bay 2.5" is the direct counterpart on the same Intel Purley platform. The two are workload-equivalent; pick based on existing fleet standardization.
• Need PCIe Gen4 NVMe or DDR4-3200? The R750 (15th gen, Ice Lake-SP) brings PCIe Gen4, DDR4-3200, 32 DIMM slots, and 3rd Gen Xeon Scalable up to 40 cores per socket. The right answer for NVMe-heavy or memory-bandwidth-bound workloads.
• Need current-generation Dell support and DDR5? The R760 (16th gen, Sapphire Rapids / Emerald Rapids) is the current production 2U platform with DDR5 at 5600 MT/s, PCIe Gen5, and up to 64 cores per socket on Emerald Rapids.

Ready to Configure?

Tell us your workload, target storage profile (SAS/SATA mix, BOSS for boot, controller preference), target memory footprint, NDC choice (10 GbE or 25 GbE), PCIe card list for riser confirmation, and quantity. Our account team returns a fully specced build with formal pricing within 24 hours, including a validated configuration covering thermal restrictions on top-bin CPUs, PCIe slot allocation across NIC and HBA and GPU, riser selection against your card list, and PSU sizing against the build's actual draw. Every refurbished unit ships with the Wholesale Servers 180-day warranty and 12+ hour burn-in testing, and volume pricing starts at 5 units. Call 1-800-778-1545 or use the quote form below.