Unverified50% confidenceFactExact time
GB300 集成 HBM3e 高带宽内存，单卡容量高达288GB，内存带宽超过10TB/s
1
Sources
50%
Confidence
Long-term
Relevance
7/10/2026
First Seen
Sources
Grok 4.5深度实测：编程能力媲美顶级模型，成本仅零头
youtubeTheo - t3․gg7/9/2026
Related Claims
UnverifiedNVIDIA 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/s85% similarVerified英伟达H100采用的HBM3内存带宽高达3.35TB/s85% similarUnverified英伟达GB300为Blackwell Ultra架构旗舰，单颗HBM3e显存容量达288GB，总显存带宽超过16TB/s，相比H100的3.35TB/s提升近5倍84% 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81% similarUnverified单颗HBM3e堆叠最大容量目前约36GB，DDR5总线位宽仅为64位而HBM可达4096位79% similar
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