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l4rz / running-nvidia-sxm-gpus-in-consumer-pcs

Running SXM2/SXM3/SXM4 NVidia data center GPUs in consumer PCs
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Question about SXM2 vs SXM3 ? #1

Closed JGuillaumin closed 3 weeks ago

JGuillaumin commented 3 weeks ago

Hi, Your projects with SXM chips connected with PCI sockets are impressive. Since you seem to have a lot of knowledge about this kind of connectors, can I ask you a related question that I have for few weeks ?

I have a server with SXM2 sockets with Tesla P100 16GB SXM2. Can I replace the P100 by V100 32GB which are for SXM3 ? From what I understood, SXM2 and SXM3 are physically identical (pin connectors), but SXM3 socket can deliver more power (48V instead of 12V). Is it an issue for the V100 ? First series of V100, with 16GB, were for SXM2.

Best regards, Julien

l4rz commented 3 weeks ago

Hi Julien

No, it's not possible to replace SXM2 P100s with SXM3 V100s - the SXM mezzanine connectors are completely different. You can replace P100s with SXM2 V100s; depending on server type, you need to keep in mind the throttling issues that might arise if the 32Gb V100 is not in list of vendor-approved GPUs for this particular server.

For example, for Dell C4130 P100s can be replaced with 32Gb V100s (with some iDRAC patching...).

Sincerely, Mike

JGuillaumin commented 3 weeks ago

Hi Mike,

Thank you very much for your quick answer. I will stay with my P100s longer :)

Best regards, Julien