NVIDIA RTX PRO 5500 Blackwell Workstation Edition vs NVIDIA GB200 Grace Blackwell Superchip 372GB

The RTX PRO 5500 Blackwell is the newer part: Blackwell, launched in 2026, against the GB200's Blackwell from 2024. Newer architectures typically add lower-precision formats and better throughput per watt, so check the precision rows your workload actually uses.

Memory is 84 GB against 372 GB, fed at 1.4 TB/s versus 16.0 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.

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.