NVIDIA H200 SXM 141GB vs NVIDIA GH200 144GB HBM3e

Both GPUs launched in 2024: the H200 on Hopper and the GH200 on Hopper.

Dense throughput for the H200 against the GH200: FP64 34 vs 34 TFLOPS, FP32 67 vs 67 TFLOPS, FP16 990 vs 990 TFLOPS, FP8 1,979 vs 1,979 TFLOPS. Sparse figures, where the vendor publishes them, appear under each dense number in the performance table.

Memory is 141 GB against 144 GB, fed at 4.8 TB/s versus 4.9 TB/s. More memory per GPU means larger models fit before you have to shard across cards, which often matters more than raw TFLOPS for inference.

Power budgets are 700 W for the H200 and 1.0 kW for the GH200. At FP32 that works out to 0.10 against 0.07 TFLOPS per watt.

For LLM training and inference, weight the FP8 and FP16 rows and memory capacity most heavily. For scientific and HPC workloads, the FP64 row is the one to read.