NVIDIA H200 NVL vs NVIDIA B300 SXM6 AC
GPU Specs Compare
Graphics Card
Release Date
Nov 2024
Sep 2025
Generation
Server Hopper
Server Blackwell
Type
AI GPU
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 6.0 x16
Clock Speeds
Base Clock
1365 MHz
1665 MHz
Boost Clock
1785 MHz
2032 MHz
Memory Clock
1593 MHz
2000 MHz
Memory
Memory Size
141GB
288GB
Memory Type
HBM3e
HBM3e
Memory Bus
6144bit
8192bit
Bandwidth
4.89TB/s
8.19TB/s
Render Config
SM Count
132
148
Shading Units
16896
18944
TMUs
528
592
ROPs
24
24
Tensor Cores
528
592
L1 Cache
256 KB (per SM)
256 KB (per SM)
L2 Cache
50 MB
126 MB
Theoretical Performance
Pixel Rate
42.84 GPixel/s
48.77 GPixel/s
Texture Rate
942.5 GTexel/s
1202.9 GTexel/s
FP16 (half)
241.3 TFLOPS
76.99 TFLOPS
FP32 (float)
60.32 TFLOPS
76.99 TFLOPS
FP64 (double)
30.16 TFLOPS
1202.9 GFLOPS
Graphics Processor
GPU Name
GH100
GB110
Architecture
Hopper
Blackwell Ultra
Foundry
TSMC
TSMC
Process Size
5 nm
5 nm
Transistors
80 billion
208 billion
Die Size
814 mm²
1628 mm²
Board Design
TDP
600W
1100W
Suggested PSU
1000 W
1500 W
Outputs
No outputs
No outputs
Power Connectors
8-pin EPS
-
Graphics Features
DirectX
N/A
N/A
OpenGL
N/A
N/A
OpenCL
3.0
3.0
Vulkan
N/A
N/A
CUDA
9.0
10.3
Shader Model
N/A
N/A