Unverified50% confidenceFactExact time
移动SoC的内存带宽通常在50至100 GB/s级别，远低于数据中心GPU的数百GB/s
1
Sources
50%
Confidence
Long-term
Relevance
9/22/2026
First Seen
Sources
Related Entities
Related Claims
Unverified系统内存带宽（DDR4/DDR5约50-80GB/s）远低于显存带宽（如GDDR6X的500-1000GB/s），导致CPU-GPU混合推理速度显著下降76% similarUnverified现代存储金字塔中GPU显存(HBM)带宽可达数TB/s但消费级容量通常8-24GB，CPU内存(DDR5)带宽约50-100GB/s，NVMe固态硬盘带宽约5-14GB/s72% similarUnverifiedCPU offload将部分Transformer层放在系统主内存由CPU计算，数据通过PCIe总线传输（PCIe 4.0 x16理论带宽约32GB/s），而GPU显存带宽通常在数百到上千GB/s，带宽差距是性能瓶颈的根本原因71% similarUnverified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/s70% similarVerifiedM4芯片统一内存架构提供高达120GB/s以上的内存带宽70% similar
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