AMD Radeon RX 560X Mobile vs NVIDIA B300
GPU · Specs Compare
Graphics Card
Release Date
Jan 2019
Sep 2025
Generation
Mobility Radeon
Server Blackwell
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 5.0 x16
Clock Speeds
Memory Clock
1750 MHz
2000 MHz
Base Clock
—
1665 MHz
Boost Clock
—
2032 MHz
Memory
Memory Size
4GB
144GB
Memory Type
GDDR5
HBM3e
Memory Bus
128bit
4096bit
Bandwidth
112.0GB/s
4.10TB/s
Render Config
Compute Units
14
—
Shading Units
896
18944
TMUs
56
592
ROPs
16
24
L1 Cache
16 KB (per CU)
256 KB (per SM)
L2 Cache
1024 KB
50 MB
SM Count
—
148
Tensor Cores
—
592
Theoretical Performance
Pixel Rate
19.57 GPixel/s
48.77 GPixel/s
Texture Rate
68.49 GTexel/s
1202.9 GTexel/s
FP16 (half)
2.192 TFLOPS
1231.8 TFLOPS
FP32 (float)
2.192 TFLOPS
76.99 TFLOPS
FP64 (double)
137.0 GFLOPS
1202.9 GFLOPS
Graphics Processor
GPU Name
Polaris 31
GB110
GPU Variant
Polaris 31 MXL
—
Architecture
GCN 4.0
Blackwell Ultra
Foundry
GlobalFoundries
TSMC
Process Size
14 nm
5 nm
Transistors
3 billion
104 billion
Die Size
123 mm²
Unknown
Board Design
TDP
65W
1400W
Outputs
No outputs
No outputs
Power Connectors
None
—
Suggested PSU
—
1800 W
Graphics Features
DirectX
12 (12_0)
N/A
OpenGL
4.6
N/A
OpenCL
2.1
3.0
Vulkan
1.2
N/A
Shader Model
6.4
N/A
CUDA
—
10.3
▲ Specs Compare
Data sourced from official specifications and benchmark tests.