Unverified60% confidenceFactExact time
GPU HBM带宽通常在2-3 TB/s量级，H100为3.35 TB/s，而PCIe 5.0连接的Host DRAM有效带宽仅约64 GB/s，两者相差近50倍
2
Sources
60%
Confidence
Long-term
Relevance
7/11/2026
First Seen
Sources
TB/s内存层加速SGLang：X-Mem让TTFT降低6.7倍的技术解析
twitterlmsysorg7/8/2026
Related Claims
VerifiedA100 GPU的HBM带宽约2TB/s，而片上SRAM带宽可达19TB/s，相差近10倍83% similarUnverifiedNVIDIA H100的HBM3显存带宽高达3.35TB/s，而Ryzen AI Halo受限于LPDDR5x带宽通常在100-300GB/s量级79% similarUnverified英伟达H100配备80GB HBM3，内存带宽达3.35 TB/s，NVLink 4.0提供900 GB/s双向带宽79% similarUnverifiedNVIDIA H100搭载的HBM3提供约3.35TB/s内存带宽，而DDR6预计单通道最高带宽约256GB/s79% similarVerifiedHBM3e单栈带宽可达1.2TB/s，相比传统GDDR6带宽可达4-9倍79% similar
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