News Gigabyte twists its RAM slots to fit 24TB of DDR5 sticks into a standard server — AMD EPYC sports an impossible 48 DIMMs in new configs

[Admin]

Gigabyte's R283-ZK0 motherboard fits two AMD SP5 server sockets on one board, and has to twist the onboard DDR5 memory slots to fit 48 DIMMs for 2 DIMM per channel operation.

Gigabyte twists its RAM slots to fit 24TB of DDR5 sticks into a standard server — AMD EPYC sports an impossible 48 DIMMs in new configs : Read more

 

[jeremyj_83]

I am anxious to see this in the wild as it could offer a 4:1 consolidation or more for a lot of companies.

 

[bit_user]

Floorplanned using Legos, no doubt!
: D

 

[NinoPino]

Impressive job by Gigabyte!

 

[thestryker]

Saw this when STH posted the news and it's still boggling that they were able to properly engineer even trace lengths and squeeze in all 48 slots.

I'm waiting to see if AMD supports MRDIMMs on Zen 5 as that should mostly negate the need for this type of design. The initial numbers being put out by Micron surprisingly show it with lower latency, but that may also be tied to capacity/throughput so I don't want to make any assumptions there.

Anandtech posted about the Micron release yesterday: https://www.anandtech.com/show/21470/micron-mrdimm-lineup-expands-datacenter-dram-portfolio

 

[adamboy64]

That sub-heading was a very nice play on words, Dallin.
Good stuff.

 

[micheal_15]

1152 GIGABYTES of Ram. Almost enough to meet the minimum requirements to run Windows 12....

 

[edzieba]

With how common it is to add DIMM slots in sets of 4 (and occasionally 2) to a board, it still surprises me that singlet sockets remain the standard. Monolithic DIMM 'slot blocks' would allow for mechanically more robust sockets and reduced parts-count. Even if colour-coding is desired, multi-shot injection moulding is hardly a rarity.

 

[bit_user]

With how common it is to add DIMM slots in sets of 4 (and occasionally 2) to a board, it still surprises me that singlet sockets remain the standard.

In 24/7 servers, DIMMs probably fail at a sufficiently high rate that I think they'd want to be able to replace them in singles or doubles. Replacing failed components is probably the main reason why server components are still socketed. Even Ampere Altra is socketed!

Monolithic DIMM 'slot blocks' would allow for mechanically more robust sockets and reduced parts-count.

What I think we're going to see is backplanes primarily for CXL.mem devices, not unlike storage backplanes. Imagine 48x M.2 boards plugged into it, perpendicularly.

 

[edzieba]

In 24/7 servers, DIMMs probably fail at a sufficiently high rate that I think they'd want to be able to replace them in singles or doubles.

I don't mean the DIMMs themselves, I mean the DIMM sockets that are soldered to the motherboards.