4X77A08632: lenovo ThinkSystem 16GB TruDDR4 3200MHz (1Rx4 1.2V) RDIMM
Also listed as: 4X77A08632-01, 02DA216, SP47A08632, B8NT, M393A2K40EB3-CWE
16GB single-rank DDR4-3200 registered ECC memory module optimized for 3rd Gen Intel Xeon Scalable and AMD EPYC processors in ThinkSystem V2 servers.
Specifications
| Part number | 4X77A08632 |
|---|---|
| Brand | lenovo |
| Type | Memory |
| Other numbers | 4X77A08632-01, 02DA216, SP47A08632, B8NT, M393A2K40EB3-CWE |
| Type | DDR4 |
| Capacity (GB) | 16 |
| Speed mhz | 3,200 |
| Form factor | RDIMM |
| Rank | 1Rx4 |
| Voltage | 1.2 |
| Ecc | Yes |
About the 4X77A08632
The Lenovo 4X77A08632 is a certified 16GB single-rank DDR4-3200 registered ECC memory module designed for modern high-performance server platforms. It represents the standard entry-capacity DIMM in Lenovo's ThinkSystem V2 server family, delivering peak memory transfer rates of 3200 MT/s at 1.2V. It directly replaced 2933MHz options to maximize throughput on Ice Lake and EPYC Rome and Milan architectures.
Compatibility
Tailored for Lenovo ThinkSystem SR650 V2, SR630 V2, SR645, SR665, and ST650 V2 platforms. While it will physically install into older V1 servers, operating speed will be throttled to 2933 MT/s or 2666 MT/s based on the host processor tier. It cannot be combined with DDR5 memory, LRDIMMs, or unbuffered memory modules in the same server chassis.
How to identify a genuine unit
Genuine units feature a Lenovo factory barcode label showing option part number 4X77A08632, FRU code 02DA216, and feature code B8NT. The module utilizes high-speed DRAM components such as Samsung M393A2K40EB3-CWE. The onboard SPD EEPROM communicates signature cryptographic data to Lenovo UEFI to activate TruDDR4 performance profiling.
Buying used
When evaluating secondary market modules, check the central register clock driver chip for discoloration or heat stress. Confirm that the PCB substrate is flat without warpage along the gold edge contacts. Request system logs from an XClarity Controller or IPMI dump verifying zero correctable memory errors during extended burn-in tests.
Reference prices (last 12 months, updated 2026-10-12)
Refurbished: USD 52 (1 sighting, Sep 2026)
Used: USD 42 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| eBay | used | USD 42 | eBay sold listing | 2026-10-12 |
| ServerMonkey | refurbished | USD 52 | Clean server pull, tested | 2026-09-18 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Fits these models
- Lenovo ThinkSystem SR650 V2
- Lenovo ThinkSystem SR630 V2
- Lenovo ThinkSystem SR645
- Lenovo ThinkSystem SR665
- Lenovo ThinkSystem ST650 V2
Buying or selling 4X77A08632?
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 Technical Reference - 4X77A08632, checked 2026-10-27
- Lenovo Technical Reference - 4X77A08632, checked 2026-10-27