MSI MOTHERBOARDS MEG MPG MAG GODLIKE CARBON TOMAHAWK - Z890 X870E X670E B850 B760 Z790 CHIPSET MEMORY

Board-matched memory for MSI motherboards — boards across the current AM5 and LGA1851 generations.

Coverage runs the full MSI hierarchy: MEG flagship boards (X870E Godlike, Z890 Ace, Z890 Godlike), MPG performance boards (X870E Carbon, Z890 Carbon), MAG Arsenal Gaming boards (B850 Tomahawk, X870 Tomahawk, Z890 Tomahawk) and the PRO business line, on Z890, X870E, X670E, B850, B760 and Z790 chipsets.

Almost all of it is non-ECC UDIMM — running DDR5-5600 across the current range, with DDR4-3200 held for the B760 and X670-era boards still in service. Modules are 8GB and 256GB, the densities that make sense for dual and quad-slot desktop builds.

MSI publishes a memory QVL per board, and on AM5 in particular the number of populated slots affects achievable speed — four modules will often clock lower than two. If you're filling all four, tell us the board and target capacity and we'll confirm what it will actually run at.

Lifetime warranty on every module. Purchase orders, net terms and volume pricing for business, government and education buyers.

Memory by MSI board and system family

MSI's tier names — MEG, MPG, MAG, PRO — describe price and feature level, not memory type. The chipset in the name and the socket decide what the board takes, and the same chipset can appear in a DDR4 and a DDR5 board a year apart. Match the row, then confirm on the board's spec page.

Board and model lists are representative. The board's spec page and memory QVL are the authority; use Shop by System Model to filter to your board or laptop.

The 60-second module-type check

Three questions. Full-size or SODIMM: every MSI desktop board takes full-size UDIMM; every MSI laptop, Cubi, PRO DP mini, and all-in-one takes SODIMM. DDR4 or DDR5: AM5 and LGA 1851 are DDR5 only; AM4 is DDR4 only; LGA 1700 boards exist in both — "DDR4" in the board name is the DDR4 variant, and the two do not interchange. Registered: the WS WRX80 is the only registered-memory board in MSI's range — RDIMM or LRDIMM — and nothing else on this page will take those modules. Everything else is non-ECC unbuffered.

Laptops: check that the memory is socketed

MSI's gaming lines (Titan, Raider, Vector, Crosshair, Katana, Sword, Cyborg) use two SODIMM slots and are straightforward upgrades. The thin and creator lines are mixed: the Stealth 16 Studio and the Modern series have slots; the Prestige, Summit, Stealth A16, and most Creator models solder the memory and cannot be upgraded. Two ways to know before ordering: MSI Center → Support → System Info lists installed memory and slot count, and Windows Task Manager → Performance → Memory shows "Slots used: 1 of 2" when a slot is free (a soldered system shows no slots). If the laptop has one soldered module plus one slot, match the added SODIMM's speed to the onboard module; capacity can differ.

How to identify what is installed

1. Click BIOS (Del at boot): the DRAM panel in EZ Mode shows each slot's capacity and speed; Advanced → OC → Memory Info (or the Board Explorer view) shows manufacturer and part number per slot.
2. MSI Center → Support → System Info shows the same in Windows, as does CPU-Z's SPD tab.
3. From the OS: sudo dmidecode -t baseboard and dmidecode -t memory on Linux, or wmic baseboard get product and Task Manager on Windows.
4. On the board: the model is silk-screened near the DIMM slots or between the PCIe slots; on laptops the model is on the underside label.

Population rules that matter on MSI

• Two modules, slots A2 and B2. Every MSI desktop board is dual-channel. Two identical modules in the second slot of each channel (marked DIMMA2 and DIMMB2, and the manual's recommended pair) run at full rated speed; a single module runs single-channel and is measurably slower in games and multitasking.
• Four DIMMs on AM5 and LGA 1700 / 1851 costs speed. Your intro says it and it is the most common question on this page: two-channel DDR5 platforms run their rated speed with two modules and train lower with four, often to 3600–4400 on AM5 depending on BIOS version and module density. For 128GB, 2×48GB or 2×64GB at full speed usually beats 4×32GB at reduced speed. For 192GB, 4×48GB is the only path and it will run below 5600.
• Match capacity, speed, and rank. Mixed speeds run at the slowest module; mixed capacities on a two-channel board run in flex mode, partly single-channel. Identical modules are the safe configuration, which is why this page sells matched pairs and quads.
• The CPU sets the ceiling. A Z790 board rated for 5600 runs a 12th Gen Core at 4800; a B650 with a Ryzen 7000 runs 5600 modules at 5200 by AMD's official spec, 5600 with Ryzen 9000. The JEDEC speed on this page is what the module trains to; the CPU decides whether it gets there.
• JEDEC speed vs profile speed. The speeds on this page are JEDEC ratings that train automatically. MSI's A-XMP, EXPO, and Memory Try It! presets push above them; that is overclocking, is not guaranteed, and depends on the CPU's memory controller. A module without a profile runs at its JEDEC speed and is the right choice for a system that has to be stable rather than fast on a benchmark.
• ECC is not an MSI feature. MSI's consumer boards run ECC UDIMM as non-ECC if they accept it at all; MSI does not validate ECC on AM4, AM5, or Intel consumer platforms. If error correction is the point, this is the wrong board family; the WS WRX80 is the only MSI board with ECC memory.

First boot on AM5 and DDR5: what is normal

On a new AM5 build or after a memory change, MSI boards run DDR5 memory training on the first POST. It can take one to three minutes with the EZ Debug DRAM LED lit and no display; that is training, not a failure. A subsequent cold boot is fast because the result is cached (Memory Context Restore, on by default in current MSI BIOS). The DRAM LED staying lit past five minutes, or the board cycling repeatedly, is the actual fault signal: reseat the modules in A2 and B2, clear CMOS, and retry with one module. Z890 and Z790 boards train too, more briefly.

WS WRX80: the one MSI board that is not like the others

The WS WRX80 is an eight-channel Threadripper PRO workstation board and takes DDR4-3200 ECC RDIMM or LRDIMM — registered memory that will not fit in any other MSI board, and that will not accept the UDIMM every other MSI board uses. Populate all eight slots to get the bandwidth the platform is bought for; four modules gives half. The similarly named TRX40 Creator is a non-PRO Threadripper 3000 board and takes ordinary DDR4-3200 UDIMM on four channels. The two do not interchange.

What "compatible equivalent" means here

A NEMIX RAM module listed for an MSI board or laptop matches the qualified spec on every attribute the memory controller checks: DDR generation, capacity, buffering, rated JEDEC speed, rank organization, voltage, and the correct 288-pin UDIMM or 262-pin (DDR5) / 260-pin (DDR4) SODIMM form factor. It is built on DRAM from the manufacturers on MSI's QVL and tested in the board family before listing. MSI systems do not check for a memory brand; BIOS reports the module's manufacturer and runs it at spec. Mixing NEMIX RAM with other modules of the same spec is supported. Every module carries a lifetime replacement warranty with free US-based technical support.

Fleet, government, and education purchasing

NEMIX RAM is a registered federal supplier (UEI GV8MMYNDJ5J1, CAGE 59AB2) and accepts purchase orders with net terms for business, government, and education buyers. For lab, classroom, or office deployments on MSI PRO boards or Modern laptops, send the model and seat count and we return a matched set per system, shipped together. Volume and reseller pricing is available on request.

Frequently asked

The module isn't on the MSI QVL for my board. The QVL lists modules MSI happened to test, not an exclusion list, and it is rarely complete. The NEMIX RAM module matches the spec of the QVL parts for that board and is tested in the board family; the lifetime warranty covers it.

Will four sticks run at 5600 on my X870E? Usually not at JEDEC 5600 with four dual-rank modules; expect 3600–4800 depending on BIOS and density. Two modules is the full-speed configuration. If you need the capacity, accept the speed; if you need the speed, buy two larger modules.

MAG B760 Tomahawk WiFi or MAG B760 Tomahawk WiFi DDR4? Same board layout, different memory slots. The plain name is DDR5; "DDR4" in the name is DDR4. Look at the box or the board — the notch position in the slot is different — and buy accordingly.

Do I need Memory Try It! or A-XMP for this module to work? No. The module trains to its JEDEC speed automatically. Those presets are for pushing above it and are optional.

My laptop isn't listed. Send us the model and we confirm whether it is socketed and what it takes before you order.