NVIDIA B300 vs AMD Radeon R9 M395X
GPU Specs Compare
Graphics Card
Release Date
Sep 2025
May 2015
Generation
Server Blackwell
Crystal System
Type
Desktop
Mobile
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
8GB
Memory Type
HBM3e
GDDR5
Memory Bus
4096bit
256bit
Bandwidth
4.10TB/s
160.0GB/s
Render Config
SM Count
148
-
Shading Units
18944
2048
TMUs
592
128
ROPs
24
32
Tensor Cores
592
-
L1 Cache
256 KB (per SM)
16 KB (per CU)
L2 Cache
50 MB
512 KB
Compute Units
-
32
Theoretical Performance
Pixel Rate
48.77 GPixel/s
23.14 GPixel/s
Texture Rate
1202.9 GTexel/s
92.54 GTexel/s
FP16 (half)
1231.8 TFLOPS
2.961 TFLOPS
FP32 (float)
76.99 TFLOPS
2.961 TFLOPS
FP64 (double)
1202.9 GFLOPS
185.1 GFLOPS
Graphics Processor
GPU Name
GB110
Amethyst
Architecture
Blackwell Ultra
GCN 3.0
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
104 billion
5 billion
Die Size
Unknown
366 mm²
GPU Variant
-
Amethyst XT
Board Design
TDP
1400W
75W
Suggested PSU
1800 W
-
Outputs
No outputs
No outputs
Power Connectors
-
None
Graphics Features
DirectX
N/A
12 (12_0)
OpenGL
N/A
4.6
OpenCL
3.0
2.0
Vulkan
N/A
1.2
CUDA
10.3
-
Shader Model
N/A
6.3
📊 Benchmark
3DMark Time Spy
-
2,514