Unverified50% confidenceFactExact time
Traditional PCs' discrete VRAM offers higher bandwidth, but capacity is limited by the graphics card model, and once a model exceeds VRAM it must be moved over the PCIe bus, drastically reducing speed.
1
Sources
50%
Confidence
Long-term
Relevance
10/17/2026
First Seen
Sources
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Related Claims
Unverified分层加载导致推理速度成为代价，需要频繁在存储设备与显存之间搬运数据，PCIe 4.0 x16 理论双向带宽约为 64GB/s76% similarUnverifiedPCIe Gen4 x16 bandwidth is approximately 64GB/s, which often becomes a hard bottleneck in memory offloading scenarios.76% similarVerifiedCPU offload places some Transformer layers in system main memory to be computed by the CPU, with data transferred over the PCIe bus (PCIe 4.0 x16 theoretical bandwidth is approximately 32 GB/s), while GPU memory bandwidth is typically in the range of hundreds to over a thousand GB/s, making the bandwidth gap the fundamental cause of the performance bottleneck.75% similar
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