128GB DDR5 ????
- Thread starter kingy10
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OCUK do a lot of memory testing with new platforms, so my suggestion would be to ask them before you buy, or to buy a kit that is on the board's QVL marked with 4 dimms.
Soldato
The only kit you *could* get was a Crucial one, rated at 4000MHz, but it is now EOL. You can just buy 2x 64GB kits with the same part number, but as already stated, no point in buying anything other than 4800MT/s if shopping for 12th Gen Intel.
Was looking at a 13900k build , but I need 128gb at a minimum I've heard buying 2 kits is bad. Would it work?
The aorus master z790 QVL only lists a max of 32gb strangely.
You can sort by 4 DIMM, but I believe the highest rated speed on the QVL for 32GB (double sided) sticks is 4800. It seems that the board manufacturers are just as keen as AMD/Intel not to offer any guarantees
As you need that much RAM, why not go for a Threadripper Pro build? If you're happy with only 128 GB then you might go for Ryzen 7000 with 4x Crucial 32 GB ECC DDR5 38400 DIMMs.
why?
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Soldato
Yes they will be fine, just don't waste money on anything above 4800MT/s. As already mentioned just make sure you get two kits at the same time with the same part number.
The QVL means 32GB module not 32GB in total.
Soldato
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Is this server RAM if 64gb module?
M321R8GA0BB0-CQK, Samsung 64GB (1x 64GB) Dual Rank x4 PC5-38400R (DDR5-4800)
M321R8GA0BB0-CQK, Samsung 64GB (1x 64GB) Dual Rank x4 PC5-38400R (DDR5-4800)
Yes. As far as I know, consumer boards don't support 64GB yet (all the boards say max 128GB).
Soldato
Fully populated AMD or Intel systems with DDR5 are a bit of a nightmare currently. You have to really look into the comments/qvl to find information you need. AMD have only qualified 4x32Gb(128Gb) DDR5 at 3600Mhz and Asus state that 4x32Gb(128Gb) DDR5 will work but it is not qualified to run at XMP (Or whatever AMD Verson of it is now, DOCP etc) and only qualified with the memory set to Auto on Frequency, timings etc. I have had issues with running 128Gb on Intel 12th gen at anything more that 4800mhz without significant development work which is not really feasible.
How about ITX boards as they typically only have two RAM slots?
The same problem, unfortunately. Micron, Hynix and Samsung are all testing 24Gbit modules (& AMD/Intel have samples), but I don't how far away that is. I assume this would boost max capacity to 96GB (2 slot) and 192GB.
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Currently it's much easier to run 128gb via DDR4 than DDR5 with the 13th Gen. Z690/790 doesn't matter. 13th gen's IMC is reportedly stronger than the 12th Gen. I cant speak for the new AMD consumer platform. However with AMD's Threadripper - I dumped in 256gb corsair DDR4 - XMP 3600. No fiddling needed - It just works.
I don't believe there are currently any decent DDR5 128GB kits. However plenty of 128gb ddr4 kits are about.
Primarily you do want a matched kit. Combining 2 kits that look the same can be troublesome and luck of the draw if they are actually matched. Defiantly get them from the same retailer at the same time.
Multiple issues to contend with.
-Luck of the draw with the IMC on your processor (this varies and is just luck if you get a good/bad one) consumer chip IMC's are weaker than HEDT)
-Motherboards can make a difference - I expect the information is out there scattered in a very fragmented way which ones are best for 128gb XMP support. However throwing money at a expensive board isn't a golden ticket.
-Ram compatibility/availability
-Dual rank (chips on both sides on the ram stick) - as far as I am aware currently all available 32gb ddr5 dimms are dual rank. This puts even more pressure on the IMC. 4 sticks of single rank ram is easier to run than 4 dual rank ones. Things will get better in time, however DDR5 is still in it's infancy. It has some advantages and disadvantages.
I don't believe there are currently any decent DDR5 128GB kits. However plenty of 128gb ddr4 kits are about.
Primarily you do want a matched kit. Combining 2 kits that look the same can be troublesome and luck of the draw if they are actually matched. Defiantly get them from the same retailer at the same time.
Multiple issues to contend with.
-Luck of the draw with the IMC on your processor (this varies and is just luck if you get a good/bad one) consumer chip IMC's are weaker than HEDT)
-Motherboards can make a difference - I expect the information is out there scattered in a very fragmented way which ones are best for 128gb XMP support. However throwing money at a expensive board isn't a golden ticket.
-Ram compatibility/availability
-Dual rank (chips on both sides on the ram stick) - as far as I am aware currently all available 32gb ddr5 dimms are dual rank. This puts even more pressure on the IMC. 4 sticks of single rank ram is easier to run than 4 dual rank ones. Things will get better in time, however DDR5 is still in it's infancy. It has some advantages and disadvantages.
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Soldato
i dont have any issues with 128Gb (4x32Gb) DDR4 in my Intel 12th/11th/10th gen systems. On Ryzen 3xxx/5xxx used to run a slight increase to the SOC for stability with 32Gb modules. Older TR systems used to have problems with 8x32Gb modules but would run fine just by lowering frequency by a couple of notches(Unless it was the 2990WX). Only problem i seem to currently have with TR Pro platforms is that when using 64 or 128Gb modules and the system is fully populated they need to have some sort of active cooling.