NVIDIA B300 vs NVIDIA H100 SXM5 64 GB
GPU Specs Compare
Graphics Card
Release Date
Sep 2025
Mar 2023
Generation
Server Blackwell
Tesla Hopper
Type
Desktop
AI GPU
Bus Interface
PCIe 5.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
1665 MHz
1665 MHz
Boost Clock
2032 MHz
1980 MHz
Memory Clock
2000 MHz
1313 MHz
Memory
Memory Size
144GB
64GB
Memory Type
HBM3e
HBM3
Memory Bus
4096bit
3072bit
Bandwidth
4.10TB/s
2.02TB/s
Render Config
SM Count
148
132
Shading Units
18944
16896
TMUs
592
528
ROPs
24
24
Tensor Cores
592
528
L1 Cache
256 KB (per SM)
256 KB (per SM)
L2 Cache
50 MB
30 MB
Theoretical Performance
Pixel Rate
48.77 GPixel/s
47.52 GPixel/s
Texture Rate
1202.9 GTexel/s
1045 GTexel/s
FP16 (half)
1231.8 TFLOPS
267.6 TFLOPS
FP32 (float)
76.99 TFLOPS
66.91 TFLOPS
FP64 (double)
1202.9 GFLOPS
33.45 TFLOPS
Graphics Processor
GPU Name
GB110
GH100
Architecture
Blackwell Ultra
Hopper
Foundry
TSMC
TSMC
Process Size
5 nm
5 nm
Transistors
104 billion
80 billion
Die Size
Unknown
814 mm²
Board Design
TDP
1400W
700W
Suggested PSU
1800 W
1100 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
10.3
9.0
Shader Model
N/A
N/A