NVIDIA B300 vs AMD Radeon R9 M385X
GPU Specs Compare
Graphics Card
Release Date
Sep 2025
May 2015
Generation
Server Blackwell
Gem System
Type
Desktop
Mobile
Bus Interface
PCIe 5.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1665 MHz
1000 MHz
Boost Clock
2032 MHz
1100 MHz
Memory Clock
2000 MHz
1200 MHz
Memory
Memory Size
144GB
4GB
Memory Type
HBM3e
GDDR5
Memory Bus
4096bit
128bit
Bandwidth
4.10TB/s
76.80GB/s
Render Config
SM Count
148
-
Shading Units
18944
896
TMUs
592
56
ROPs
24
16
Tensor Cores
592
-
L1 Cache
256 KB (per SM)
16 KB (per CU)
L2 Cache
50 MB
256 KB
Compute Units
-
14
Theoretical Performance
Pixel Rate
48.77 GPixel/s
17.60 GPixel/s
Texture Rate
1202.9 GTexel/s
61.60 GTexel/s
FP16 (half)
1231.8 TFLOPS
-
FP32 (float)
76.99 TFLOPS
1.971 TFLOPS
FP64 (double)
1202.9 GFLOPS
123.2 GFLOPS
Graphics Processor
GPU Name
GB110
Strato
Architecture
Blackwell Ultra
GCN 2.0
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
104 billion
2.08 billion
Die Size
Unknown
160 mm²
GPU Variant
-
Strato XT
Board Design
TDP
1400W
Unknown
Suggested PSU
1800 W
-
Outputs
No outputs
Portable Device Dependent
Graphics Features
DirectX
N/A
12 (12_0)
OpenGL
N/A
4.6
OpenCL
3.0
2.1
Vulkan
N/A
1.2.170
CUDA
10.3
-
Shader Model
N/A
6.5