Unverified82% confidenceFactTime unknown
PCIe通道是工作站资源博弈焦点：多显卡+NVMe RAID+高速网卡需大量通道，普通消费CPU仅20-28条易不够，Threadripper PRO/至强可提供128条
1
Sources
82%
Confidence
Long-term
Relevance
-
First Seen
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Partially VerifiedPCIe通道数决定能挂载的GPU和NVMe数量：Threadripper PRO/EPYC提供128条PCIe 4.0/5.0通道，可支持4-7张GPU全速运行；消费级平台（Intel Core/AMD Ryzen）仅约20-28条可用通道，插2张显卡就会降速到x8/x883% similarUnverifiedPCIe万兆网卡需要至少PCIe 2.0 x4或3.0 x2带宽，插在x1插槽会被限速无法跑满万兆，安装前确认主板插槽物理与带宽规格82% similarUnverifiedPCIe万兆网卡多需PCIe x4插槽带宽，插在x1槽会限速；选购前确认主板有空闲x4及以上物理槽位与足够lane81% similarUnverifiedPCIe万兆网卡需注意插槽带宽：X550为PCIe 3.0 x1不够跑满双万兆口，双口万兆需PCIe 3.0 x4以上插槽，插错插槽或用x1槽会限速81% similarUnverifiedPCIe 4.0 x16带宽约64GB/s，且每次传输需要显式的cudaMemcpy调用，在推理延迟敏感场景中是显著瓶颈79% similar
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