AMD Radeon RX 580X Mobile vs NVIDIA B300 SXM6 AC
GPU · Specs Compare
Graphics Card
Release Date
Apr 2018
Sep 2025
Generation
Mobility Radeon
Server Blackwell
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 6.0 x16
Clock Speeds
Base Clock
1000 MHz
1665 MHz
Boost Clock
1077 MHz
2032 MHz
Memory Clock
2000 MHz
2000 MHz
Memory
Memory Size
8GB
288GB
Memory Type
GDDR5
HBM3e
Memory Bus
256bit
8192bit
Bandwidth
256.0GB/s
8.19TB/s
Render Config
Compute Units
36
—
Shading Units
2304
18944
TMUs
144
592
ROPs
32
24
L1 Cache
16 KB (per CU)
256 KB (per SM)
L2 Cache
2 MB
126 MB
SM Count
—
148
Tensor Cores
—
592
Theoretical Performance
Pixel Rate
34.46 GPixel/s
48.77 GPixel/s
Texture Rate
155.1 GTexel/s
1202.9 GTexel/s
FP16 (half)
4.963 TFLOPS
76.99 TFLOPS
FP32 (float)
4.963 TFLOPS
76.99 TFLOPS
FP64 (double)
310.2 GFLOPS
1202.9 GFLOPS
Graphics Processor
GPU Name
Polaris 20
GB110
GPU Variant
Polaris 20M XT
—
Architecture
GCN 4.0
Blackwell Ultra
Foundry
GlobalFoundries
TSMC
Process Size
14 nm
5 nm
Transistors
5.7 billion
208 billion
Die Size
232 mm²
1628 mm²
Board Design
TDP
100W
1100W
Outputs
No outputs
No outputs
Power Connectors
None
—
Suggested PSU
—
1500 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.