AMD Threadripper CPU supported?

fkn4k

New Member
Jun 24, 2019
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hi proxmox team

i want to install on my homelab proxmox. i have there a amd threadripper 2950x cpu with 16 cores / 32 threads. did you know if kvm is support this type of cpu?

regards
franco
 

Stefan_R

Proxmox Retired Staff
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Jun 4, 2019
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Yes, Threadripper is supported by Proxmox.

The only thing known to be tricky (though not impossible) with these CPUs is PCI(e) passthrough. If you don't need that, you're fine.
 

s.Oliver

Member
Nov 22, 2017
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does this also still apply for the new v6 of Proxmox?
a) being supported well and
b) doing any pci[e]-passthroughs to be not working easily?

need to think about a possible solution for a client and right now a Threadripper 2950X would fit the job quite well.
 

Stefan_R

Proxmox Retired Staff
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Jun 4, 2019
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Yes, the kernel included in PVE 6 is newer and has even better support for Ryzen/Threadripper CPUs. Internally we are using some EPYC servers for testing, and they are working wonderfully.

As far as I can tell, even PCIe passthrough is working without issues now on Threadripper/EPYC.
 
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s.Oliver

Member
Nov 22, 2017
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Yes, the kernel included in PVE 6 is newer and has even better support for Ryzen/Threadripper CPUs. Internally we are using some EPYC servers for testing, and they are working wonderfully.

As far as I can tell, even PCIe passthrough is working without issues now on Threadripper/EPYC.

exactly because of newer kernel i was hoping for better support of these AMD beast. ;-)
thx. for your infos.
 
Jul 11, 2019
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What are the reasons why I should use Epyc CPU instead of Threadripper? Threadripper is much lower price (I can even have a 12 core for less money than an Epyc 8 core) and has higher single core performance: https://www.cpubenchmark.net/compare/AMD-EPYC-7251-8-Core-vs-AMD-Ryzen-Threadripper-2920X/3196vs3354
Only drawbacks I can see are 64 vs 128 PCIe lanes, higher TDP and that there are very few Threadripper server mainboards out there.

EDIT: Threadripper apparantly only supports 128 GB RAM.
 
Last edited:

RCaldeira

Member
Jun 2, 2020
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Yes, Threadripper is supported by Proxmox.

The only thing known to be tricky (though not impossible) with these CPUs is PCI(e) passthrough. If you don't need that, you're fine.

Works fine on 2920x for HBA and GPU... No problems found with x399D8-2at with ECC
 
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