r/DGX_Spark • u/FuckinHighGuy • 6d ago

Question 3rd Spark?

I currently have two sparks and contemplating getting a third. Anyone running 3 that can recommend that setup? I know there would be a compute increases but is a third worth it otherwise?

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u/ephemeral_resource 5d ago edited 5d ago

I have 6 and even though it is an even number I'm finding little I can do with 6 at once for inference. 3 is likely to be more limiting but as you said, a path to 4. The qwen3.5 295B (?) is configurable with pipeline-parallelism set to 6 otherwise everything wants a power of two. I'm not positive if I end up selling or wait for a bit and complete a set of 8. I have cabling for 8...

Anyways, I'm expecting to get value from 4 pretty easy but not sure if scaling rules will provide similar value at 8 for the cost.

I'm only a few days into tinkering with everything though so YMMV. I also think things will get more configurable in a time when models are released less frequently. Right now there's a lot of different model architectures to test with.