Lenovo ThinkSystem SR665
The ThinkSystem SR665 was Lenovo's 2U dual-socket enterprise workhorse server built on AMD EPYC 7002 (Rome) and 7003 (Milan) Series processors. Offering up to 128 physical x86 cores, 32 DDR4-3200 DIMM channels, and up to 32 direct-connect PCIe 4.0 NVMe SSDs, it was widely adopted for virtual desktop infrastructure (VDI), software-defined storage (such as vSAN and Ceph), electronic design automation, and database consolidation. The platform also accommodated up to 3 full-height, double-width GPU accelerators. On the secondary market, it is heavily traded for private cloud clusters; buyers should verify XClarity license keys, confirm cooling fan cage type, and inspect heatsinks for 280W EPYC processor compatibility.
Also written as: ThinkSystem SR665, SR665 Gen1, 7D2V, 7D2W
Specifications
| Brand | Lenovo |
|---|---|
| Family | ThinkSystem SR |
| Form factor | 2U rack |
| Released | May 2020 |
| End of sale | Mar 2024 |
| Cpu sockets | 2 |
| Cpu platform | Dual AMD EPYC 7002 (Rome) and 7003 (Milan) Series processors up to 64 cores per socket and 280W TDP |
| Memory slots | 32 |
| Memory type | DDR4-3200 RDIMM / 3DS RDIMM |
| Memory max (GB) | 8,192 |
| Drive bays | Up to 40x 2.5-inch SFF or 20x 3.5-inch LFF hot-swap bays; up to 32x direct NVMe PCIe 4.0 drives |
| Pcie slots | Up to 8 PCIe 4.0 slots plus 1 OCP 3.0 slot and internal storage slot |
| Gpu support | Up to 3 double-wide 300W GPUs or 8 single-wide GPUs |
| Network onboard | OCP 3.0 slot plus dedicated 1GbE XClarity management port |
| Power supply | Dual redundant 750W / 1100W / 1800W / 2400W AC 80 PLUS Platinum or Titanium PSUs |
Generations
- Next generation: Lenovo ThinkSystem SR665 V3
Reference prices (last 14 days, updated 2026-10-27)
Refurbished: USD 4,500 (1 sighting, Oct 2026)
Used: USD 3,200 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| ebay.com | used | USD 3,200 | 2x AMD EPYC 7543 32-core, 128GB DDR4, 12x 3.5 LFF bays, dual 1100W PSUs | 2026-10-27 |
| serversupply.com | refurbished | USD 4,500 | 2x AMD EPYC 7713 64-core, 256GB RAM, 24-bay SFF chassis refurbished | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Compatible parts
Memory
- 4X77A08632 Lenovo ThinkSystem 16GB TruDDR4 3200MHz (1Rx4 1.2V) RDIMM
- 4X77A08634 Lenovo ThinkSystem 64GB TruDDR4 3200MHz (2Rx4 1.2V) RDIMM
- 4X77A83756 ThinkSystem 32GB TruDDR4 3200MHz (2Rx4 1.2V) RDIMM
RAID controllers
- 4Y37A09730 Lenovo ThinkSystem RAID 940-16i 8GB Flash PCIe Gen4 12Gb Adapter
SSDs
- 4XB7A17128 ThinkSystem 2.5" S4620 3.84TB Mixed Use SATA 6Gb HS SSD
Hard drives
- 4XB7A13911 ThinkSystem 3.5" 14TB 7.2K SAS 12Gb Hot Swap 512e HDD
Equivalent models from other brands
- Dell Poweredge R7525
- HPE Proliant DL385 Gen10 Plus
Buying a used SR665: what to check
Verify processor heatsink compatibility for 280W EPYC CPUs, inspect fan cages for high-performance dual-rotor fans, check XClarity Controller license status, and ensure matching OCP 3.0 network cards and redundant power supplies are present.
FAQ
What AMD processors are supported in the ThinkSystem SR665?
It supports AMD EPYC 7002 (Rome) and 7003 (Milan) Series processors up to 64 cores per socket and 280W TDP.
How many direct NVMe drives does the SR665 support?
The 2U SR665 supports up to 32 direct-attach 2.5-inch NVMe PCIe 4.0 SSDs without requiring PCIe switch adapters.
What server replaced the SR665?
The ThinkSystem SR665 V3 replaced it, upgrading to AMD EPYC 9004/9005 processors, PCIe Gen5, and DDR5 memory.
Buying or selling SR665?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Lenovo ThinkSystem SR665 Server Product Guide, checked 2026-10-27