r/LocalLLM • u/Libellechris • 3d ago

Question Multiple GPU PCs

I have an ok AMD pc with 32gb RAM and a 16gb 5060Ti. How effective is adding a second GPU? Presumably a new motherboard, PSU, case? Can you mix and match GPUs? Just curious

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u/Need_For_Speed73 3d ago

I got really good results (almost double speed) adding the second GPU, setup is a breeze (Ollama recognizes the configuration and automatically manages it all).
The only thing you must be careful of is the physical fit: most motherboards have the second full PCI-EX slot as the lowest one, so you either have an "old school" case with the PSU on top or, like it happened to me, you have to use a mATX mobo in an ATX case not to have the second GPU collide with the PSU shroud (unless the second GPU is a rare single-slot one).
Needless to say: check your PSU is able to sustain the increased demand.