Short answer: almost every Thinkmate server, GPU system and workstation uses DDR5 or DDR4 ECC registered memory (RDIMM). Tower servers, entry servers and some edge systems use ECC unbuffered memory (UDIMM) instead. The exact type, speed and module size depend on your model and processor generation. This guide shows how to find your model and links to the matching NEMIX RAM listing for every Thinkmate system we cover: 482 listings across Thinkmate-branded systems and the Supermicro, GIGABYTE and ASUS servers Thinkmate configures.
Find your Thinkmate model first
Your model number is on the system label and on your Thinkmate order confirmation. Thinkmate-branded systems start with the product line (RAX, GPX, STX, TWX, VSX, HPX, HDX or EDX). Systems Thinkmate builds on other brands keep the original model number: Supermicro SYS- or SSG-, GIGABYTE R, G, H, B, E or W-series, and ASUS RS or ESC. Type the model number into the search bar at the top of any page on nemixram.com, or use the tables below.
Thinkmate memory at a glance
| Systems | Listings | Main memory type | Browse |
|---|---|---|---|
| Thinkmate RAX, GPX, STX, VSX, TWX, HPX, HDX and EDX | 148 | DDR5 / DDR4 ECC RDIMM; ECC UDIMM on TWX towers | Thinkmate systems memory |
| Supermicro systems configured by Thinkmate | 125 | DDR5 ECC RDIMM; ECC UDIMM on IoT and entry systems | Thinkmate Supermicro memory |
| GIGABYTE servers configured by Thinkmate | 189 | DDR5 ECC RDIMM, mostly DDR5-6400 | Thinkmate GIGABYTE memory |
| ASUS servers configured by Thinkmate | 20 | DDR5 ECC RDIMM | Thinkmate ASUS memory |
Thinkmate-branded systems
| Line | What it is | Memory | Examples |
|---|---|---|---|
| GPX | GPU servers and GPU workstations for AI training, inference, rendering and simulation | DDR5 ECC RDIMM (DDR5-6400 on the newest platforms); DDR4 RDIMM or LRDIMM on earlier ones | GPX GXA6-2808-8HGX-B3 · GPX QH14-28E4-8HGX |
| STX | Storage servers: STX-NL nearline, STX-TN NAS and STX-WS Windows storage | DDR5 ECC RDIMM on current STX-NL; DDR4 ECC RDIMM on earlier models | STX-NL XE36-24X6-10G · STX-TN XE60-24S3 |
| RAX | Rackmount servers for Intel Xeon and AMD EPYC | DDR5 ECC RDIMM (DDR5-5600 or DDR5-6400 by generation) | RAX RXS6-2224-01 · RAX RXS5-2212-G1 |
| VSX, HPX and SBGrid | Professional workstations, including SBGrid systems for structural biology and cryo-EM | DDR5 ECC RDIMM on VSX / HPX; unbuffered memory on SBGrid desktops | VSX R5 760S4 · HPX QF8-24E9 · SBGrid Standard |
| TWX | Tower (pedestal) servers for offices, labs and branch sites | DDR5 ECC UDIMM | TWX QS4-14R7 · TWX XS8-14E4 |
| HDX and EDX | High-density multi-node servers and compact edge servers | DDR4 ECC RDIMM on the models listed | HDX XN24 / XN12 family · EDX QS10-11E3 |
Supermicro systems from Thinkmate
| Family | Memory | Examples |
|---|---|---|
| Hyper and mainstream SuperServer | DDR5 ECC RDIMM | SYS-222H-TN |
| GPU SuperServer | DDR5 or DDR4 ECC RDIMM by generation | SYS-420GP-TNR |
| BigTwin and GrandTwin multi-node | DDR5 ECC RDIMM; populate every node the same way | SYS-621BT-HNC8R · SYS-211GT-HNC8R |
| Storage SuperServer (SSG) | DDR5 ECC RDIMM | SSG-641E-E1CR36L |
| IoT and edge SuperServer | DDR5 ECC UDIMM; some compact models take SODIMM | SYS-111AD-HN2 |
| SuperWorkstation | DDR5 ECC RDIMM or ECC UDIMM by model | SYS-551A-T |
For Supermicro systems bought elsewhere, see Supermicro memory.
GIGABYTE servers from Thinkmate
| Family | Memory | Examples |
|---|---|---|
| R-series rackmount | DDR5 ECC RDIMM, mostly DDR5-6400; DDR4 on earlier EPYC models | R283-ZK0-AAL1 · R282-Z94 |
| G-series GPU | DDR5 ECC RDIMM | G894-ZD3-AAX7 |
| H- and B-series high-density | DDR5 ECC RDIMM; populate every node the same way | B683-Z80-AAS1 |
| E-series edge | DDR5 ECC RDIMM or ECC UDIMM by model | E263-Z34-AAJ1 |
| W-series workstations | DDR5 ECC RDIMM | W773-H5D |
For other GIGABYTE servers and server boards, see GIGABYTE server memory.
ASUS servers from Thinkmate
| Family | Memory | Examples |
|---|---|---|
| RS rackmount | DDR5 ECC RDIMM (DDR5-4800 to DDR5-6400 by generation) | RS720A-E12-RS24U |
| ESC GPU servers | DDR5 ECC RDIMM | ESC8000A-E13P |
Which type of memory does my Thinkmate system use?
- ECC RDIMM: registered memory for Intel Xeon and AMD EPYC servers, GPU systems and workstations. See DDR5 RDIMM and DDR4 RDIMM.
- LRDIMM: load-reduced modules for maximum capacity on a few DDR4 platforms. Do not mix with RDIMM.
- ECC UDIMM: unbuffered ECC memory for TWX towers, entry servers and edge systems. See DDR5 ECC UDIMM.
- Non-ECC UDIMM: some entry systems accept non-ECC as well. Where they do, both versions are listed and each links to the other. Choose one type; do not mix ECC and non-ECC.
Frequently asked questions
How do I find my Thinkmate model number?
It is on the system label and on your Thinkmate order confirmation. Thinkmate-branded systems use names such as RAX RXS6-2224-01 or GPX GXA6-2808-8HGX-B3; systems Thinkmate configures from other brands keep the original model number, such as Supermicro SYS-621BT-HNC8R, GIGABYTE R283-ZK0-AAL1 or ASUS ESC8000A-E13P.
Is RDIMM the same as ECC UDIMM?
No. RDIMM (registered) and UDIMM (unbuffered) modules are not interchangeable. Most Thinkmate servers, GPU systems and workstations use ECC RDIMM; TWX towers, entry servers and some edge systems use ECC UDIMM. Each listing names the type your system needs.
Why do some listings say DDR5-6400 and others DDR5-5600?
The supported speed depends on the processor generation. The newest AMD EPYC and Intel Xeon 6 platforms run DDR5-6400; the previous generation runs DDR5-5600 or DDR5-4800. Each listing uses the speed the platform supports.
Can I mix my existing modules with new ones?
Use identical modules wherever you can: the same type, speed, capacity and rank. Never mix RDIMM with LRDIMM or UDIMM, or ECC with non-ECC. If you are adding to installed memory, send us the part number of the module you have and we will match it.
How should I install memory in a dual-socket or multi-node server?
Populate every memory channel evenly on each processor for full bandwidth, and fill each node of a multi-node system (BigTwin, GrandTwin, HDX, H-series) the same way. Your system manual shows the slot order.
Can I buy memory for a whole cluster or lab?
Yes. Purchase orders, net terms and volume pricing are available for research labs, universities, businesses and government buyers. Request a quote with your system list.
Buying Thinkmate memory from NEMIX RAM
NEMIX RAM is a US-based server memory specialist, in business since 1993. Every module is researched, matched, and compatibility-tested by NEMIX RAM, is JEDEC-compliant, and is backed by a lifetime warranty. Purchase orders, net terms and volume pricing are available for research labs, universities, businesses, government buyers and resellers. Request a quote for a cluster, a lab refresh or multiple systems, or send us your Thinkmate model number and we will confirm the right module before you order.
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