Nvidia’s Gigantic Blackwell GPU Outpaces Competition

Blackwell is Nvidia’s largest consumer GPU die, featuring 750 mm² area, 92.2 billion transistors, and 192 SMs.

Its high streaming multiprocessor count and 512-bit GDDR7 memory bus deliver massive compute and memory bandwidth.

Blackwell’s architecture overlaps graphics and compute tasks on the same queue for more efficient scheduling.

Each SM uses 16-byte fixed-length instructions with private L0 and shared L1 instruction caches (32 KB and ~128 KB).

Execution units combine FP32 and INT32 on a single 32-wide pipeline and add floating-point operations to the uniform datapath.

The SM-level 128 KB L1/Shared Memory block provides up to 128 B/cycle per SM for fast on-chip data access.

In benchmarks like FluidX3D, Blackwell shows a significant performance lead over AMD’s RDNA4 GPUs.