AMD Radeon RX 560 XT vs NVIDIA B300 SXM6 AC
GPU · Specs Compare
Graphics Card
Release Date
Mar 2019
Sep 2025
Generation
Polaris
Server Blackwell
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 6.0 x16
Clock Speeds
Base Clock
1074 MHz
1665 MHz
Boost Clock
1226 MHz
2032 MHz
Memory Clock
1750 MHz
2000 MHz
Memory
Memory Size
4GB
288GB
Memory Type
GDDR5
HBM3e
Memory Bus
256bit
8192bit
Bandwidth
224.0GB/s
8.19TB/s
Render Config
Compute Units
28
—
Shading Units
1792
18944
TMUs
112
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
39.23 GPixel/s
48.77 GPixel/s
Texture Rate
137.3 GTexel/s
1202.9 GTexel/s
FP16 (half)
4.394 TFLOPS
76.99 TFLOPS
FP32 (float)
4.394 TFLOPS
76.99 TFLOPS
FP64 (double)
274.6 GFLOPS
1202.9 GFLOPS
Graphics Processor
GPU Name
Ellesmere
GB110
GPU Variant
Polaris 10 LE1
—
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
150W
1100W
Suggested PSU
450 W
1500 W
Outputs
1x HDMI 2.0b3x DisplayPort 1.4a
No outputs
Power Connectors
1x 6-pin
—
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.