NVIDIA B300 vs AMD Radeon Pro 560X
GPU Specs Compare
Graphics Card
Release Date
Sep 2025
Jul 2018
Generation
Server Blackwell
Radeon Pro Mac
Type
Desktop
Mobile
Bus Interface
PCIe 5.0 x16
PCIe 3.0 x8
Clock Speeds
Base Clock
1665 MHz
-
Boost Clock
2032 MHz
-
Memory Clock
2000 MHz
1470 MHz
Memory
Memory Size
144GB
4GB
Memory Type
HBM3e
GDDR5
Memory Bus
4096bit
128bit
Bandwidth
4.10TB/s
94.08GB/s
Render Config
SM Count
148
-
Shading Units
18944
1024
TMUs
592
64
ROPs
24
16
Tensor Cores
592
-
L1 Cache
256 KB (per SM)
16 KB (per CU)
L2 Cache
50 MB
1024 KB
Compute Units
-
16
Theoretical Performance
Pixel Rate
48.77 GPixel/s
16.06 GPixel/s
Texture Rate
1202.9 GTexel/s
64.26 GTexel/s
FP16 (half)
1231.8 TFLOPS
2.056 TFLOPS
FP32 (float)
76.99 TFLOPS
2.056 TFLOPS
FP64 (double)
1202.9 GFLOPS
128.5 GFLOPS
Graphics Processor
GPU Name
GB110
Polaris 21
Architecture
Blackwell Ultra
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
5 nm
14 nm
Transistors
104 billion
3 billion
Die Size
Unknown
123 mm²
GPU Variant
-
Polaris 21 XT(215-0908004)
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
2.1
Vulkan
N/A
1.2
CUDA
10.3
-
Shader Model
N/A
6.4