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oofbeyyesterday at 8:53 PM3 repliesview on HN

DGX Spark is a fantastic option at this price point. You get 128GB VRAM which is extremely difficult to get at this price point. Also it’s a fairly fast GPU. And stupidly fast networking - 200gbps or 400gbps mellanox if you find coin for another one.


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ekropotinyesterday at 9:17 PM

I’m not very well versed in this domain, but I think it’s not going to be “VRAM” (GDDR) memory, but rather “unified memory”, which is essentially RAM (some flavour of DDR5 I assume). These two types of memory has vastly different bandwidth.

I’m pretty curious to see any benchmarks on inference on VRAM vs UM.

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BobbyJoyesterday at 8:57 PM

Internet seems to think the SW support for those is bad, and that strix halo boxes are better ROI.

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borisskyesterday at 9:03 PM

Can even network 4 of these together, using a pretty cheap InfiniBand switch. There is a YouTube video of a guy building and benchmarking such setup.

For 5K one can get a desktop PC with RTX 5090, that has 3x more compute, but 4x less VRAM - so depending on the workload may be a better option.

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