HardwareMemoryMr. DIMM, why do you have so many chips? Micron’s new monstrous multi-rank memory doubles DDR5 speed to 8,800 MT/sWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works.
HardwareMemoryMr. DIMM, why do you have so many chips? Micron’s new monstrous multi-rank memory doubles DDR5 speed to 8,800 MT/sWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works.
When you purchase through links on our site, we may earn an affiliate commission.Here’s how it works.
(Image credit: Micron)
No, Mr. Dimm isn’t the name of a Bond villain, nor is it the name of a less-than-smart school teacher in a teen comedy. MRDIMM is, in fact, an AMD- and JEDEC-backed attempt at standardising a kind of monstrously wide, fiendishly high-capacity, high-bandwidth, and somehow relatively cheap DDR5 memory. And now,Micron’s unleashed it(viaWccftech) into the wild.
We regular folk are used to standard “unregistered” RAM sticks forming some of thebest RAM for gaming, but servers often use “registered” DIMMs, or RDIMMs. These buffer their control instructions to improve reliability, which is more important for servers than home users. MRDIMM, meaning Multi-Ranked buffered DIMM, works on this RDIMM design but (you guessed it) adds multiple ranks of DRAM.
Adding additional ranks of DRAM to a DIMM allows for more memory bandwidth, which will be ever-more important as servers clamour over more and more AI workloads.
Another popular way of improving bandwidth is to stack the DRAM and connect them over Through-Silicon-Vias (TSVs), as is done with High Bandwidth Memory (HBM). But this is expensive.
MRDIMM shouldn’t be as expensive as HBM because to allow for multiple ranks of DRAM you only really have to modify the hardware register (the buffer). Herein lies the trick that allows MRDIMM memory to run up to 8,800 MT/s (with up to 256 GB capacity).
Moar RAM(Image credit: Future)Best RAM for gaming: the latest and greatest
Moar RAM
(Image credit: Future)Best RAM for gaming: the latest and greatest
(Image credit: Future)
Best RAM for gaming: the latest and greatest
This kind of memory has been in the works for a while, now. In 2022,Intel started working with SK Hynix and Renesas to develop MCR DIMMs(Multiplexer Combined Ranks DIMMs), for Intel servers only. Then, in 2023 and with AMD’s backing,JEDEC started working on the DDR5 MRDIMM standard, which it looks like Micron is now bringing to market.
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Funnily enough, Micron’s MRDIMM DRAM modules are (at least for now) for Intel Xeon 6 server processors. But given that it’s supposed to be an open standard, we can expect AMD to bring it to its Epyc servers before too long.
We gamers shouldn’t be too discouraged that we’re not getting our own multi-rank DIMMS, though. We’ve got plenty to look forward to in the RAM form factor department. Yes, I’m looking at you,CAMM2, you peculiarly flat thing, you.
More about memoryCorsair’s new ‘personalised RAM’ gives you the option to pick the look and speed of memory you hide in the case anywayCorsair rolls out its first CUDIMM memory sticks for Intel Arrow Lake gaming PCs and they’re as pricey as you’d expect them to be
More about memory
Corsair’s new ‘personalised RAM’ gives you the option to pick the look and speed of memory you hide in the case anywayCorsair rolls out its first CUDIMM memory sticks for Intel Arrow Lake gaming PCs and they’re as pricey as you’d expect them to be
Corsair’s new ‘personalised RAM’ gives you the option to pick the look and speed of memory you hide in the case anyway
Corsair’s new ‘personalised RAM’ gives you the option to pick the look and speed of memory you hide in the case anyway
Corsair rolls out its first CUDIMM memory sticks for Intel Arrow Lake gaming PCs and they’re as pricey as you’d expect them to be
Corsair rolls out its first CUDIMM memory sticks for Intel Arrow Lake gaming PCs and they’re as pricey as you’d expect them to be
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