Dell Precision 5820
A single-processor tower with motherboard choices to match your processor platform. Compare platform specifications, then select your configuration.
Buying the Dell Precision 5820
Our refurbished CTO systems offer TekBoost’s best value and are the models we sell most commonly. Use the configurator to select the available processors, memory, storage and other options. Review the final configuration and price before ordering.
Need an option outside the configurator? Send a custom quote request with the model and required components.
Platform specifications
These are platform capabilities and documented options. Match the exact processor, chassis and installed components to the applicable manufacturer document.
| Processors | Single-socket only: Intel Xeon W-2000 family or Intel Core X series, up to 18 cores |
|---|---|
| Chipset | Intel C422 (Xeon W) or Intel X299 (Core X) |
| Memory | Four-channel DDR4: up to 512GB at 2666MHz or up to 256GB at 2933MHz (ECC RDIMM), or up to 256GB at 2666MHz (Non-ECC UDIMM); 8 DIMM slots total. Available memory type/capacity depends on the selected processor/chipset configuration — confirm the exact pairing in the configurator |
| Graphics slots | Two PCIe x16 Gen 3 graphics slots; up to 600W total, up to 2×300W double-width cards; some cards unavailable on Core X i9/i7 |
| Storage (FlexBay) | Up to 4×2.5"/3.5" SATA (up to 6×2.5"+5×3.5" with the 5.25" bay populated); front hot-plug M.2/U.2 NVMe (lane-limited on Core X i9/i7); up to 4 M.2 NVMe via an add-in card |
| Storage controllers | Integrated Intel chipset SATA + software RAID; optional Broadcom MegaRAID controllers; SAS not available on all Core X configurations |
| Expansion slots | 2×PCIe x16, 1×PCIe x16 (x8-wired), 1×PCIe x16 (x4-wired), 1×PCIe x16 (x1-wired), 1×PCI 32/33 — all PCIe Gen 3 |
| Power supply | Dell's cited platform specification documents 425W or 950W options, both 80 PLUS Gold certified; 425W not available on Core X i9/i7 |
| Chassis | 16.45" (H) × 6.95" (W) × 20.4" (D), approximately 34lb |
| Rack option | Dell's official documentation supports an optional rack-mount rail kit for this platform |
| Original documented operating systems | Dell's original platform documentation lists Windows 10 Pro for Workstations, a separate Windows 10 Pro edition for Core X CPUs, RHEL 8.0, Ubuntu 18.04, SUSE Linux Enterprise Server 12 SP2, and NeoKylin 6.0 SP5 (China only) ; verify current OS and driver support for the selected configuration |
Dell Precision 5820 specifications PDF
Download the manufacturer document hosted by TekBoost. Check the revision inside the PDF; archived editions may cover different options from later releases.
Plan a complete configuration
Processor & memory
Match your application requirements to the supported processor family. Verify DIMM type, occupied slots and population rules; installed CPU count can affect available memory and expansion.
Graphics & expansion
Confirm graphics-card dimensions, occupied PCIe slots, PSU capacity, power connectors and application certification.
Condition & delivery
Compare the complete configured price, warranty terms and lead time. Include your quantity, destination and preferred condition when requesting a quote.
Common questions
Can I configure and buy this model online?
Yes. Use Configure & Buy to open the current CTO listing and choose its available options. Contact us for requirements outside that listing.
Does the specification sheet describe my exact system?
No. It describes platform options for its document edition. Check your installed processor, memory, chassis, controller, power supply and expansion components before selecting parts.
Precision 5820 or 7820 — which should I choose?
The deciding factor is socket count and memory layout, not clock speed. The 5820 is single-socket only: one Intel Xeon W-2000 family or Intel Core X processor, up to 18 cores, on four memory channels across 8 DIMM slots. The 7820 takes one or two Intel Xeon Scalable processors, 1st or 2nd generation, up to 28 cores each, on six memory channels across 12 DIMM slots when both sockets are populated.
That raises the ceiling rather than the speed of any individual core. Choose the 7820 when the work is parallel enough to use more cores, or when you need memory capacity or bandwidth beyond four channels and 8 slots. The documented memory limits are up to 512GB at 2666MHz (or up to 256GB at 2933MHz) with ECC RDIMM on the 5820, and up to 768GB at 2933MHz on a dual-CPU 7820. Both platforms provide two PCIe x16 Gen 3 graphics slots.
These are platform capabilities, not the components included in any particular system. Configure a Precision 5820 or a Precision 7820 to see what a specific build contains, or compare the full documented options on the Precision 7820 specifications page. Either way the system is inspected, configured to the specification you order and functionally tested before it ships, and carries our standard 3-year warranty.
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Choose your next step
Configure a common refurbished platform for the best value, or request a quote around your workload.
Compare this platform
These guides set out how this platform compares with the others in its family, using published specifications.