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MSI and ADATA announced a 128GB, four-rank DDR5 CUDIMM, making 256GB possible with two such modules in a two-DIMM configuration. MSI’s PRO Z890-P specifications independently list a 256GB maximum and CUDIMM support. That establishes a plausible capacity path—not universal compatibility: check the exact motherboard’s memory compatibility list, BIOS support, CPU, and expected operating speed before buying.
What MSI and ADATA announced
In a November 14, 2025 announcement, MSI said it and ADATA had launched a desktop four-rank CUDIMM with up to 128GB on a single stick. Two modules of that capacity would total 256GB in a two-DIMM motherboard configuration.
The announcement also described an MSI Z890 motherboard as “under development.” It therefore does not establish that every retail Z890 board had validated the announced module, or that a particular 128GB module is listed as compatible with a given board.
What MSI Z890 specifications establish
PRO Z890-P
MSI’s PRO Z890-P specification page, accessed October 8, 2026, lists four DDR5 UDIMM slots, a 256GB maximum memory capacity, and CUDIMM support. This makes it a concrete example of a mainstream Z890 board whose published capacity matches the announced 256GB target. The specification does not, by itself, confirm a specific 128GB CUDIMM SKU.
#1 Best Overall
- Intel Core Ultra Processors (Series 2) - The Z890 GAMING PLUS WIFI6E is an ATX motherboard outfitted with the latest Intel Z890 chipset (LGA 1851, the 14 Duet Rail Power System VRM features MSI Core Boost technology for improved stability
- FROZR GUARD - Premium cooling features such as 7W/mK MOSFET thermal pads, extra choke thermal pads and an Extended Heatsink; Includes chipset heatsink, double-sided EZ M.2 Shield Frozr II, a Combo-fan (for pump & system) header (3A)
- DDR5 MEMORY, PCIe 5.0 x16 SLOT - 4 x DDR5 DIMM slots with Memory Boost isolated circuitry for overclocking (1DPC 1R, Up to 9200+MT/s OC); 1 x PCIe 5.0 x16 slot (128GB/s) supports graphics cards and includes Steel Armor II
- QUADRUPLE M.2 CONNECTORS - Storage options include 1 x M.2 Gen5 x4 128Gbps slot, 3 x M.2 Gen4 x4 64Gbps slots; Features EZ M.2 Shield Frozr II to prevent thermal throttling and EZ M.2 Clip II for EZ DIY experience.
- High-Speed Connectivity - Network hardware includes a Wi-Fi 6E module with Bluetooth 5.3 & Intel Killer E5000B 5G LAN; Rear ports include USB 10Gbps Type-C with display output and 7.1 HD Audio with Audio Boost
MEG Z890 GODLIKE
MSI’s MEG Z890 GODLIKE specification page, also accessed October 8, 2026, lists a 256GB maximum and CUDIMM support. Its published memory-speed figures vary according to DIMMs per channel and whether the modules are single- or dual-rank. Those figures should not be treated as the expected speed for a two-module, four-rank 256GB setup.
Capacity does not tell you the memory speed
A 128GB-per-stick rating describes capacity, not the speed a full-capacity system will achieve. MSI states on the PRO Z890-P specification page: “Memory compatibility and supported speeds can vary depending on the CPU and memory configuration.” In practice, module count and rank are important when interpreting published speed limits.
Rank #2
- Support Intel Core Ultra Processors (Series 2)
- Support Dual Channel DDR5 Memory, up to 256GB
- Wi-Fi 7: the latest wireless solution with a new 320MHz channel, achieving a maximum transmission speed of 5.8Gbps
- 10G Super Lan: next level network speed, secure networking with fastest data throughput to improve efficiency
- Ultra Power Plus: the ultimate power solution with 24+1+2+1 DRPS, 110A SPS, and OC engine unleashes maximum CPU performance
The MSI/ADATA announcement says a module completed stable burn-in testing at over 10,000 MT/s “with 1 Rank.” That is a narrowly scoped result; it is not a speed claim for the announced four-rank 128GB stick or for a 256GB build. Do not assume an advertised high-speed figure applies to a different rank or capacity configuration.
How to check compatibility before buying
- Identify the exact board model and revision. Use the manufacturer page for the specific MSI Z890 motherboard rather than relying on a general statement about the chipset or brand.
- Open its memory compatibility list (QVL). Look for the exact module model number and capacity, not just another module from the same manufacturer or a lower-capacity kit.
- Check the current BIOS and CPU support information. MSI’s Z890 GAMING PLUS WIFI support page, accessed October 8, 2026, shows a July 14, 2026 BIOS listing and mentions improved compatibility and overclocking for four 64GB DIMMs totaling 256GB. That note concerns that four-module configuration; it does not validate a 128GB CUDIMM.
- Confirm the intended configuration and speed. Verify whether the board supports the desired total capacity with two 128GB modules, and check the speed qualifications for your CPU, DIMM count, and rank configuration.
- Recheck the listing before purchase. The available MSI specifications and announcement do not establish retail pricing, availability, or a current QVL entry for a particular 128GB module on each Z890 board.
What this means for a 256GB build
The announced ADATA four-rank CUDIMM offers a route to 256GB with two sticks, while MSI’s PRO Z890-P and MEG Z890 GODLIKE specifications each list 256GB maximum capacity and CUDIMM support. Those facts support the capacity story, but they are not a substitute for model-specific validation. Buy only after the exact board’s current QVL and support information match the module and configuration you intend to use.
Quick Recap
Rank #4
- Support Intel Core Ultra Processors (Series 2)
- Support Dual Channel DDR5 Memory, up to 256GB
- Wi-Fi 7: the latest wireless solution with a new 320MHz channel, achieving a maximum transmission speed of 5.8Gbps
- Premium Thermal Design: heavy plated heatsink with heat-pipe/high quality 7W/mK MOSFET thermal pads/extra choke thermal pads/onboard M.2 Shield Frozr
- Dual LAN: dual premium network solution for both Intranet and Internet, offering a smooth gaming experience for effective network connection
Rank #3
- Intel Core Ultra Processors (Series 2) - The MAG Z890 TOMAHAWK WIFI II is an ATX motherboard outfitted with the latest Intel Z890 chipset (LGA 1851, the 16 Duet Rail Power System VRM features MSI Core Boost technology for improved stability & performance
- FROZR GUARD - Premium cooling features such as 7W/mK MOSFET thermal pads, extra choke thermal pads and an Extended Heatsink; Includes chipset heatsink, double-sided EZ M.2 Shield Frozr II, a Combo-fan (for pump & system) header (3A)
- DDR5 MEMORY, PCIe 5.0 x16 SLOT - 4 x DDR5 DIMM slots with Memory Boost isolated circuitry for overclocking (1DPC 1R, 9200+ MT/s OC); 1 x PCIe 5.0 x16 slot (128GB/s) supports graphics cards and includes Steel Armor II"
- QUADRUPLE M.2 CONNECTORS - Storage options include 1 x M.2 Gen5 x4 128Gbps slot, 3 x M.2 Gen4 x4 64Gbps slots; Features EZ M.2 Shield Frozr II to prevent thermal throttling and EZ M.2 Clip II for EZ DIY experience.
- ULTRA CONNECT - Network hardware includes a Wi-Fi 7 module with Bluetooth 5.4 & Intel Killer 5G LAN; Rear ports include Thunderbolt 4 Type-C with display output and 7.1 USB High Performance Audio with Audio Boost 4 (supports S/PDIF output)
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