NVIDIA B300 vs AMD Radeon RX 7950 XT
GPU · Specs Compare
Graphics Card
Release Date
Sep 2025
Unknown
Generation
Server Blackwell
Navi III
Type
Desktop
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
1665 MHz
2000 MHz
Boost Clock
2032 MHz
3000 MHz
Memory Clock
2000 MHz
2500 MHz
Memory
Memory Size
144GB
20GB
Memory Type
HBM3e
GDDR6
Memory Bus
4096bit
320bit
Bandwidth
4.10TB/s
800.0GB/s
Render Config
SM Count
148
—
Shading Units
18944
5376
TMUs
592
336
ROPs
24
192
Tensor Cores
592
—
L1 Cache
256 KB (per SM)
256 KB per Array
L2 Cache
50 MB
6 MB
Compute Units
—
84
RT Cores
—
84
L3 Cache
—
80 MB
Theoretical Performance
Pixel Rate
48.77 GPixel/s
576.0 GPixel/s
Texture Rate
1202.9 GTexel/s
1008 GTexel/s
FP16 (half)
1231.8 TFLOPS
129.0 TFLOPS
FP32 (float)
76.99 TFLOPS
64.51 TFLOPS
FP64 (double)
1202.9 GFLOPS
2.016 TFLOPS
Graphics Processor
GPU Name
GB110
Navi 31
Architecture
Blackwell Ultra
RDNA 3.0
Foundry
TSMC
TSMC
Process Size
5 nm
5 nm
Transistors
104 billion
57.7 billion
Die Size
Unknown
529 mm²
GPU Variant
—
Navi 31 XT+
Board Design
TDP
1400W
300W
Suggested PSU
1800 W
700 W
Outputs
No outputs
1x HDMI 2.1a2x DisplayPort 2.11x USB Type-C
Power Connectors
—
2x 8-pin
Graphics Features
DirectX
N/A
12 Ultimate (12_2)
OpenGL
N/A
4.6
OpenCL
3.0
2.2
Vulkan
N/A
1.3
CUDA
10.3
—
Shader Model
N/A
6.7
▲ Specs Compare
Data sourced from official specifications and benchmark tests.