My current PC specs:
- Dell Precision T1700 Motherboard
- Xeon E3 1275 v3
- 32GB DDR3 1600Mhz ECC
- 7900 XTX 24GB VRAM (Transferring to new PC)
What I want in my next PC:
- MSI Z790-P Motherboard (with Dasharo)
- i9-14900k
- DDR5 192GB 5600Mhz (Non-ECC)
- 7900 XTX 24GB VRAM
Will I see any performance increase? I’m also worried about not having ECC RAM, I will be coding a lot with my LLMs (firmware development), so part of me doesn’t want to make any mistakes and future proof. I heard DDR5 has some ECC-like features, but not the same as traditional ECC. Maybe I should buy a Dell Precision 3630 motherboard which has support for upto 128GB DDR4 ECC memory? This is a dedicated LLM PC, so, not too concerned about gaming or anything.
I would like to hear your suggestions!
Only the GPU and primarily the vram matters for LLMs. So this wouldn’t help at all.
You’re the only one talking sense and you are sitting here with your 2 upvotes
The AI company business model is 100% unsustainable. It’s hard to say when they will get sick of hemorrhaging money by giving away this stuff more or less for free, but it might be soon. That’s totally separate from any legal issues that might come up. If you care about this stuff, learning about doing it locally and having a self hosted solution in place might not be a bad idea.
But upgrading anything aside from your GPU+VRAM is a pure and unfettered waste of money in that endeavor.
GPU with a ton of vran is what you need, BUT
An alternate solution is something like a Mac mini with an m series chip and 16gb of unified memory. The neural cores on apple silicon are actually pretty impressive and since they use unified memory the models would have access to whatever the system has.
I only mention it because a Mac mini might be cheaper than GPU with tons of vram by a couple hundred bucks.
And it will sip power comparatively.
4090 with 24gb of vram is $1900 M2 Mac mini with 24gb is $1000
Buying second hand 3090/7090xtx will be cheaper for better performances if you are not building the rest of the machine.
Don’t you need tons of RAM to run LLMs? I thought the newer models needed up to 64GB RAM? Also, what about Stable Diffusion?
VRAM. Not system RAM. LLMs run best entirely on the GPU.
Ram is important but it has to be vram not system ram.
Only MacBooks can use the system ram because they have an integrated GPU rather than a dedicated one.
Stable diffusion is the same situation.
Taking ollama for instance, either the whole model runs in vram and compute is done on the gpu, or it runs in system ram and compute is done on the cpu. Running models on CPU is horribly slow. You won’t want to do it for large models
LM studio and others allow you to run part of the model on GPU and part on CPU, splitting memory requirements but still pretty slow.
Even the smaller 7B parameter models run pretty slow in CPU and the huge models are orders of magnitude slower
So technically more system ram will let you run some larger models but you will quickly figure out you just don’t want to do it.
They do, but VRAM. Unfortunately, the cards that do have that much of memory are used by OEMs/corporations and are insanely pricey
One minor caveat where CPU could matter is AVX support. I couldn’t get ollama to run well on my system, despite having a decent GPU, because I’m using an ancient processor.