Best TAA-Designated Server Memory
The registered, error-correcting memory a server platform requires — RDIMM and LRDIMM modules across DDR3, DDR4 and DDR5 — read by capacity, speed, rank and whether the module's own title carries the TAA designation.
TAA-compliant server memory in stock at Uniqcli
How to choose →A curated selection with live pricing — in-stock lines first, then back-ordered lines with a typical lead time. Every line is sourced through US distribution and screened for NDAA §889 status before checkout, with TAA verified on request.
- Axiom Memory Solutions4GB DDR3-1600 UDIMM TAA Compliant - 4 GB - DDR3 SDRAM - 1600 MHz DDR3-1600/PC3-12800 - Non-ECC - DIMMAXG23993512/1
$123.00
$49.28*
1 in stock - Axiom Memory Solutions1GB DDR-333 SODIMM TAA Compliant - 1 GB - DDR SDRAM - 333 MHz DDR333/PC2700 - 200-pin - SoDIMMAXG09490474/1
$147.00
$65.27*
23 in stock - Axiom Memory Solutions8GB DDR3-1333 UDIMM TAA Compliant - 8 GB - DDR3 SDRAM - 1333 MHz DDR3-1333/PC3-10600 - Non-ECC - UnbufferedAXG23793256/1
$257.00
$85.25*
1 in stock
8GB DDR3 ECC RDIMM
Axiom Memory Solutions
8GB DDR3-1600 ECC RDIMM TAA Compliant
AXG50093234/1
An Axiom 8GB DDR3-1600 ECC RDIMM — a registered error-correcting module for a DDR3-generation server that lists 1600MHz registered memory.
Titled TAA Compliant, which is a per-part fact to confirm on the row you order.
$67.92*In stock16GB DDR3 ECC RDIMM
Axiom Memory Solutions
16GB DDR3-1600 ECC RDIMM TAA Compliant
AXG50093233/1
An Axiom 16GB DDR3-1600 ECC RDIMM — the 16GB registered module for a DDR3 server, doubling the per-slot capacity at the same 1600MHz registered speed.
Titled TAA Compliant.
$168.45*In stock32GB DDR3 LRDIMM
Axiom Memory Solutions
32GB PC3L-10600L (DDR3-1333) ECC LRDIMM TAA Compliant
AXG50393293/1
An Axiom 32GB PC3L-10600L DDR3-1333 ECC LRDIMM — a load-reduced module for a DDR3 platform that needs the highest capacity per channel its sockets support.
Titled TAA Compliant. LRDIMM trades a little latency for capacity; confirm the platform lists it.
$279.87*In stock64GB DDR3 LRDIMM
Axiom Memory Solutions
64GB PC3-12800L (DDR3-1600) ECC LRDIMM
AXG57594843/1
An Axiom 64GB PC3-12800L DDR3-1600 ECC LRDIMM — the top-capacity DDR3 load-reduced module for a memory-dense legacy server build.
Titled TAA Compliant.
$466.75*In stock8GB DDR4 ECC RDIMM
Axiom Memory Solutions
8GB DDR4-2400 ECC RDIMM
AXG74896443/1
An Axiom 8GB DDR4-2400 ECC RDIMM — a registered error-correcting module for a DDR4 server that lists 2400MHz registered memory.
Titled TAA Compliant.
$261.29*In stock8GB DDR4-2666 RDIMM
Axiom Memory Solutions
8GB DDR4-2666 ECC RDIMM
AXG83997546/1
An Axiom 8GB DDR4-2666 ECC RDIMM — the same 8GB registered module at the higher 2666MHz data rate for a platform that supports it.
Titled TAA Compliant. A faster module runs at the platform's speed; match it to the server's list.
$298.44*In stock16GB DDR4 ECC RDIMM
Axiom Memory Solutions
16GB DDR4-2133 ECC RDIMM
AXG63194858/1
An Axiom 16GB DDR4-2133 ECC RDIMM — a 16GB registered module for an earlier DDR4 platform that lists 2133MHz registered memory.
Titled TAA Compliant.
$519.64*In stock16GB DDR3 registered
AddOn
AddOn IBM® 00D4968 Compatible Factory Original TAA Compliant 16GB…
00D4968-AMT
An AddOn 16GB DDR3-1600 registered ECC module, factory-original and IBM-compatible — a registered DDR3 module matched to a specific server OEM part number.
Titled TAA Compliant.
$118.91*Back-ordered8GB DDR4 registered
AddOn
AddOn JEDEC Standard Factory Original TAA Compliant 8GB DDR4-2666MHz…
AMT2666D4SR8RN/8G
An AddOn 8GB DDR4-2666 registered ECC single-rank module, JEDEC-standard — a single-rank registered DDR4 module for a general server population.
Titled TAA Compliant.
$265.88*Back-ordered16GB DDR4-2400 RDIMM
AddOn
AddOn JEDEC Standard Factory Original TAA Compliant 16GB DDR4-2400MHz…
AMT2400D4DR4RN/16G
An AddOn 16GB DDR4-2400 registered ECC dual-rank module, JEDEC-standard — a dual-rank 16GB registered module for a DDR4 server that lists 2400MHz.
Titled TAA Compliant.
$328.44*Back-ordered16GB DDR4-3200 RDIMM
AddOn
AddOn 16GB DDR4-3200MHz Registered ECC Dual Rank x8 1.2V 288-pin CL17…
AMT3200D4DR8RN/16G
An AddOn 16GB DDR4-3200 registered ECC dual-rank x8 288-pin RDIMM — a 16GB registered module at the fastest common DDR4 data rate.
Titled TAA Compliant.
$677.12*Back-ordered32GB DDR4-3200 RDIMM
AddOn
AddOn 32GB DDR4-3200MHz Registered ECC Dual Rank x4 1.2V 288-pin CL17…
AMT3200D4DR4RN/32G
An AddOn 32GB DDR4-3200 registered ECC dual-rank x4 288-pin RDIMM — a 32GB registered module for a memory-dense DDR4 build at 3200MHz.
Titled TAA Compliant.
$1,417.03*Back-ordered128GB DDR4 LRDIMM
AddOn
AddOn JEDEC Standard Factory Original TAA Compliant 128GB DDR4-2666MHz…
AMT2666D48R4LRN/128G
An AddOn 128GB DDR4-2666 load-reduced ECC octal-rank LRDIMM — the top-capacity DDR4 module for a platform that supports load-reduced memory at 128GB per slot.
Titled TAA Compliant. LRDIMM is platform-specific; confirm the server lists 128GB octal-rank support.
$2,424.20*Back-ordered16GB DDR5-4800 RDIMM
AddOn
AddOn Dell AC239377 Compatible TAA Compliant 16GB DDR5-4800MHz…
AC239377-AMT
An AddOn 16GB DDR5-4800 registered ECC single-rank module, Dell-compatible — a registered DDR5 module matched to a current-generation server platform.
Titled TAA Compliant.
$2,355.20*Back-orderedMore memory modules in the Uniqcli catalog
See all 8,708 memory modulesMore from across this category. In-stock lines lead, and a back-ordered line carries the same estimated availability its product page does — with live pricing throughout, NDAA §889 screening before checkout and TAA verified on request.
- Axiom Memory SolutionsAxiom RAM Module - 3 TB (12 x 256GB) - DDR4-3200/PC4-25600 DDR4 SDRAM - 3200 MHz - TAA Compliant - ECC - 288-pin - LRDIMMAXG1012100321/12
$237,334.00
$102,606.24*
1 in stock - Axiom Memory SolutionsAxiom 256GB DDR5-4800 RDIMM TAA Compliant - Axiom 256GB DDR5-4800 ECC RDIMM - TAA CompliantAXG1074102706/1
$43,777.00
$19,128.92*
1 in stock - Axiom Memory SolutionsAxiom 128GB DDR5-6400 ECC RDIMM TAA Compliant - 128GB DDR5-6400 ECC RDIMM - TAA CompliantAXG1080103517/1
$28,867.00
$10,568.70*
2 in stock - Axiom Memory SolutionsAxiom 64GB DDR5-6400 ECC RDIMM TAA Compliant - 64GB DDR5-6400 ECC RDIMM - TAA CompliantAXG1080103516/1
$14,644.00
$6,161.66*
40 in stock - Axiom Memory SolutionsAxiom 32GB DDR5 SDRAM Memory Module - For Server - 32 GB - DDR5-4800/PC5-38400 DDR5 SDRAM - 4800 MHz - TAA Compliant - ECC - Registered - DIMMAXG1074103266/1
$8,424.00
$3,164.14*
27 in stock - Axiom Memory SolutionsAxiom 64GB DDR4-3200 ECC RDIMM - TAA Compliant - 64 GB - DDR4-3200/PC4-25600 DDR4 SDRAM - 3200 MHz - TAA Compliant - ECC - Registered - RDIMMAXG995100088/1
$6,200.00
$2,336.41*
90 in stock
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Server memory is not desktop memory with a bigger number. A server platform requires registered (RDIMM) or load-reduced (LRDIMM) error-correcting modules — the register buffers the address and command lines so a board can carry many ranks per channel, and ECC lets the memory controller correct the single-bit errors that a machine running for months will eventually see. Put an unbuffered desktop UDIMM in a server socket and it usually will not post; put a non-ECC module in a platform that expects ECC and you have traded silent data corruption for a saving that is not worth it. On a federal or federally-funded order the module is also an item a contracting officer reads a country-of-origin designation on, and that designation is read per part number, not assumed from the brand.
Three facts decide the module. The platform sets the generation and speed — DDR3, DDR4 or DDR5, at the data rate the CPU and board support — and a module faster than the platform runs at the platform's speed while a slower one caps the channel, so the honest rule is to match the module to what the server's own memory list specifies. Capacity and rank are second: a 16GB dual-rank RDIMM and two 8GB single-rank RDIMMs are not the same to a memory controller populating a channel, and mixing ranks or capacities across a channel can drop the whole channel to the slowest, smallest common denominator. Registered versus load-reduced is third: RDIMM covers most builds, while LRDIMM trades a little latency for the highest capacity per channel on the platforms that need it.
Nothing on this page is a test result. The grid is fenced to memory rows whose own manufacturer title carries the TAA designation, and the registered ECC server modules are pinned to the front; the editorial picks below span DDR3, DDR4 and DDR5, RDIMM and LRDIMM, 8GB through 128GB, from more than one manufacturer — each one checked by hand for the designation in the vendor's own catalog title. Cards carry live pricing and current availability from the catalog; the origin designation is confirmed per part number on the quote, and the exact module is matched to the server's supported memory list.
Buyer's checklist
How to choose TAA-compliant server memory
- Match the module to the server's supported memory list. The platform sets the generation (DDR3/DDR4/DDR5), the speed and whether it wants RDIMM or LRDIMM — a module the server does not list may not post, and one faster than the platform simply runs at the platform's speed.
- Use registered ECC modules, not desktop UDIMMs. A server socket expects a registered (RDIMM) or load-reduced (LRDIMM) error-correcting module; an unbuffered non-ECC desktop stick usually will not post and, where it does, trades silent data corruption for a small saving.
- Read capacity and rank together, not just the gigabytes. A 16GB dual-rank and two 8GB single-rank modules populate a channel differently; mixing ranks or capacities across a channel can drop the whole channel to the slowest, smallest common denominator.
- Choose RDIMM or LRDIMM by the capacity the build needs. RDIMM covers most servers; LRDIMM trades a little latency for the highest capacity per channel on the platforms and populations that require it.
- Populate channels evenly. A CPU's memory bandwidth comes from filling its channels; a lopsided population leaves bandwidth on the table, so plan the module count around the platform's channels-per-socket rather than one big stick.
- Where the purchase order names TAA, read the designation on the part number. Several of these modules carry TAA Compliant in the manufacturer's own title and others do not — it is a per-part fact to confirm on the exact row you order, not a property of the brand.
- Buy the kit the server needs at once. Populating channels evenly usually means matched modules; ordering them together on one document keeps a channel from being finished later with a mismatched part.
RDIMM, LRDIMM and ECC: match the module to the platform
A server's memory is chosen by the platform, not by preference. The CPU and board publish a supported memory list — a generation (DDR3, DDR4 or DDR5), a data rate, and whether the sockets expect registered RDIMM or load-reduced LRDIMM modules — and the honest rule is to buy to that list. A module faster than the platform runs at the platform's speed, a slower one caps the channel, and an unbuffered desktop UDIMM in a registered socket generally will not post at all. ECC is not optional on these platforms: the memory controller uses it to correct the single-bit errors a machine running for months will see, and running non-ECC where ECC is expected trades data integrity for a saving that is not worth it.
Capacity, rank and population are the other half. A 16GB dual-rank RDIMM and two 8GB single-rank RDIMMs are not interchangeable to a controller filling a channel, and mixing ranks or capacities across a channel can drop it to the slowest, smallest common denominator. RDIMM covers most builds; LRDIMM trades a little latency for the highest capacity per channel on the platforms that need it. Those are per-part facts the manufacturer's title and the server's own memory list state, which is why the picks below name their generation, capacity, rank and RDIMM/LRDIMM type rather than a single spec.
TAA on the part number, confirmed on the quote
The Trade Agreements Act turns on where a good is manufactured or substantially transformed, and for a memory module that is a fact about the specific part number rather than about the manufacturer. Several of the modules on this page carry TAA Compliant in the vendor's own catalog title, and others do not, so the designation is read per part and confirmed on the exact row you order. A manufacturer's designation is its own statement about that part number, not an independent certification, which is why the picks below were chosen on the designation in the vendor's own title rather than on the brand.
Uniqcli sources every line through US distribution and screens TAA country-of-origin and NDAA §889 status before checkout, with the documentation tied to the specific part number rather than a product family. That is what lets a full memory upgrade — the modules matched to the server's supported list, populated evenly across its channels — be quoted, screened and shipped on one document tied to the exact platform.
FAQ
Common questions
- What is the difference between server memory and desktop memory?
- A server platform requires registered (RDIMM) or load-reduced (LRDIMM) error-correcting modules, while a desktop typically uses unbuffered non-ECC UDIMMs. The register buffers the address and command lines so a board can carry many ranks per channel, and ECC lets the memory controller correct single-bit errors a long-running machine will see. An unbuffered desktop stick in a server socket usually will not post, and a non-ECC module where ECC is expected trades data integrity for a small saving. The rule is to buy the module type the server's own supported memory list names.
- What is the difference between RDIMM and LRDIMM?
- Both are registered ECC server modules; the difference is how much the register buffers. An RDIMM buffers the address and command lines and covers most server builds. An LRDIMM adds a buffer on the data lines too, which trades a little latency for the ability to run more ranks and the highest capacity per channel on the platforms that support it. Which one a server wants — and at which capacities — is set by the platform's supported memory list, so read that before choosing, because the two are not freely interchangeable in the same channel.
- Can I mix module capacities and ranks in a server?
- Cautiously, and often it is not worth it. A memory controller populating a channel treats a 16GB dual-rank module and two 8GB single-rank modules differently, and mixing ranks or capacities across a channel can drop the whole channel to the slowest, smallest common denominator — losing the bandwidth or capacity you paid for. The safe approach is matched modules populated evenly across the platform's channels, which is also why buying the memory for a server as one kit on one order avoids finishing a channel later with a mismatched part.
- Is this server memory TAA compliant?
- Some of it is, and it is stated per part rather than per brand. Several rows here carry TAA Compliant in the manufacturer's own catalog title, and others do not, including modules from the same manufacturer in the same capacity family. Where an order carries an origin clause, read the designation on the exact part number you are ordering and confirm it on the quote; a manufacturer's designation is its own statement about that part number, not an independent certification and not a property of the product family.
- Can business, government and education buyers order these?
- Every line Uniqcli quotes is sourced through US distribution and screened for TAA country-of-origin and NDAA §889 status before checkout — with documentation tied to the specific part number, not a product family.
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