英伟达(NVDA.US)发布A100 80GB加速卡：HBM2e显存翻倍、性能提升200%
© Reuters. 英伟达(NVDA.US)发布A100 80GB加速卡：HBM2e显存翻倍、性能提升200%
智通财经APP获悉，周一，英伟达(NVDA.US)推出A100 80GB加速卡。NVIDIA今年3月份发布了安培架构的A100加速卡，升级了7nm工艺和Ampere安培架构，集成542亿晶体管，826mm2核心面积，使用了40GB HBM2显存，带宽1.6TB/s。
现在的A100 80GB加速卡在GPU芯片上没变化，依然是A100核心，6912个CUDA核心，加速频率1.41GHz，FP32性能19.5TFLOPS，FP64性能9.7TFLOPS，INT8性能624TOPS，TDP 400W。
主要的变化是显存，之前是40GB，HBM2规格的，带宽1.6TB/s，现在升级到了80GB，显存类型也变成了更先进的HBM2e，频率从2.4Gbps提升到3.2Gbps，使得带宽从1.6TB/s提升到2TB/s。
英伟达官方信息称它的性能少则提升25%，多则提升200%，特别是在AI训练中，同时能效也提升了25%。在A100 80GB加速卡发布之后，现在的A100 40GB版依然会继续销售。
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