Best way to increase ram?

Mattcee2

Mattcee2

Mattcee2

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15 Oct 2020
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I have 64gb RAM right now (x2 32) but am finding I’m maxing it out when using WAN 2.2 so want to upgrade to 128GB.
It sucks about the prices at the moment but am I right in thinking it’s best to buy a new 128gb kit (x2 64gb) as you can’t mix and match sticks - or could I buy another matching 64gb kit and have x4 sticks instead of two?
 
Mattcee2 said:
It sucks about the prices at the moment but am I right in thinking it’s best to buy a new 128gb kit (x2 64gb) as you can’t mix and match sticks - or could I buy another matching 64gb kit and have x4 sticks instead of two?
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You can mix and match sticks, but results may vary. Is a lottery, depending on CPU, motherboard and BIOS. If you're running out, you probably don't care at that point and capacity trumps speed.

In this market, buying the optimal config is not an option really, you're just looking for a deal.
 
Tetras said:
You can mix and match sticks, but results may vary. Is a lottery, depending on CPU, motherboard and BIOS. If you're running out, you probably don't care at that point and capacity trumps speed.

In this market, buying the optimal config is not an option really, you're just looking for a deal.
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From what I’ve seen 5200-5600 on AM5 with 64bg sticks is easy. 6000-6200 is more questionable and the point the things become CPU/board/Mem dependant.

Intel is where you really have to sacrifice speed for capacity/stability at least with the desktop platforms.
 
Mattcee2 said:
I have 64gb RAM right now (x2 32) but am finding I’m maxing it out when using WAN 2.2 so want to upgrade to 128GB.
It sucks about the prices at the moment but am I right in thinking it’s best to buy a new 128gb kit (x2 64gb) as you can’t mix and match sticks - or could I buy another matching 64gb kit and have x4 sticks instead of two?
Click to expand...

Check your motherboards QVL (Qualified Vendor List) for the RAM and how many sticks you can use that will be compatible.

You didn't give us the motherboard or ram make and specs.. So we can only guess. So more info or look up the QVL RAM for your motherboard as that will explain with the sticks you have how many can be used and at what speeds.
 
Purgatory said:
Check your motherboards QVL (Qualified Vendor List) for the RAM and how many sticks you can use that will be compatible.

You didn't give us the motherboard or ram make and specs.. So we can only guess. So more info or look up the QVL RAM for your motherboard as that will explain with the sticks you have how many can be used and at what speeds.
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Yeah I should have mentioned what I have. Its an AMD 9950X3D build with:

Motherboard is: an Asus Proart X870-E Creator.
Ram is: G.Skill DDR5 64GB PC 6000 CL30 (2x32GB)

It seems my options are to buy another matching kit and hope x4 sticks work ok and is the cheaper option - or buy a 128GB kit (x2 64GB) kit but they seem pretty thin on the ground now and are over £1000 :(
I see more 128GB x4 stick kits than x2 stick kits so maybe they're the kits than many didn't want as much?

I guess I could sell my existing 64GB kit to offset the price though and I dare say I'd get more than I paid for it last year.
 
I'm going to guess you're not doing video generation work professionally, else you would likely have been able to just put the RAM as costs and likely would have went for a min of 128GB on the get go already. If not a greater amount like 192GB or 256GB outright.

Given the climate of astronomical price rises, you may need to simply adjust your workflow instead to account for only 64GB of Memory on hand to load things into. Especially if you're only just playing around with WAN 2.2 - you won't necessarily know what improvements actually help with what you are attempting to do.
 
Would the work not be getting done on the GPU like most things and so system RAM is ineffective upgrade and would be chronically slow once the job drops out of VRAM?

Typically, you add more GPUs for things like LLMs or GPUs with more VRAM or a combo of both with something that has unified RAM like Strix Halo, Apple machines or the DG10, not done video work with AI personally but most video tasks are made for GPUs massively parallel processors and fast VRAM in all other creator tasks rather than CPU and system RAM.
 
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If OP has the 5090, it "should" be done on the GPU, but if some workflow settings aren't done up properly, you can run into problems where the build automatically tries NOT to dump everything into VRAM and shares it with RAM(emory) instead. The 5090 needs a different build of the same software (everyone else uses) to make use of it properly vs other GPU's for instance. Software switches telling the software not to load into RAM(emory) also help keep it on the VRAM instead.

But of course that all also depends on length of video being attempted to be generated, prompts, etc. Which is why if you can, you attempt to break up a generated video scene into chunks instead and use suitable framegrabs for start/end points to a generated video and then you won't need the likes of the RTX6000Pro with its 96GB VRAM to do the same thing.
 
I would buy a matching set and see if you can get 4 sticks to run well, you may need to drop the speed down a bit and or play with the timings a bit though, it depends, as people have said, with this much ram on AM5 it's not only board but also CPU dependant, as in the specific memory controller on your specific chip rather than the model of chip.
 
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