NVIDIA B300 vs AMD Radeon HD 7950
GPU · Specs Compare
Graphics Card
Release Date
Sep 2025
Jan 2012
Generation
Server Blackwell
Southern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1665 MHz
—
Boost Clock
2032 MHz
—
Memory Clock
2000 MHz
1250 MHz
Memory
Memory Size
144GB
3GB
Memory Type
HBM3e
GDDR5
Memory Bus
4096bit
384bit
Bandwidth
4.10TB/s
240.0GB/s
Render Config
SM Count
148
—
Shading Units
18944
1792
TMUs
592
112
ROPs
24
32
Tensor Cores
592
—
L1 Cache
256 KB (per SM)
16 KB (per CU)
L2 Cache
50 MB
768 KB
Compute Units
—
28
Theoretical Performance
Pixel Rate
48.77 GPixel/s
25.60 GPixel/s
Texture Rate
1202.9 GTexel/s
89.60 GTexel/s
FP16 (half)
1231.8 TFLOPS
—
FP32 (float)
76.99 TFLOPS
2.867 TFLOPS
FP64 (double)
1202.9 GFLOPS
716.8 GFLOPS
Graphics Processor
GPU Name
GB110
Tahiti
Architecture
Blackwell Ultra
GCN 1.0
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
104 billion
4.313 billion
Die Size
Unknown
352 mm²
GPU Variant
—
Tahiti PRO(215-0821056)
Board Design
TDP
1400W
200W
Suggested PSU
1800 W
550 W
Outputs
No outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
—
2x 6-pin
Graphics Features
DirectX
N/A
12 (11_1)
OpenGL
N/A
4.6
OpenCL
3.0
1.2
Vulkan
N/A
1.2
CUDA
10.3
—
Shader Model
N/A
5.1
Benchmark
3DMark Time Spy
—
1,969
3DMark Time Spy Extreme
—
1,019
▲ Specs Compare
Data sourced from official specifications and benchmark tests.