AMD Radeon RX 580X Mobile vs AMD Radeon R9 M295X
GPU Specs Compare
Graphics Card
Release Date
Apr 2018
Nov 2014
Generation
Mobility Radeon
Crystal System
Type
Mobile
Mobile
Bus Interface
MXM-B (3.0)
MXM-B (3.0)
Clock Speeds
Base Clock
1000 MHz
-
Boost Clock
1077 MHz
-
Memory Clock
2000 MHz
1250 MHz
Memory
Memory Size
8GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
256.0GB/s
160.0GB/s
Render Config
Compute Units
36
32
Shading Units
2304
2048
TMUs
144
128
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
2 MB
512 KB
Theoretical Performance
Pixel Rate
34.46 GPixel/s
23.14 GPixel/s
Texture Rate
155.1 GTexel/s
92.54 GTexel/s
FP16 (half)
4.963 TFLOPS
2.961 TFLOPS
FP32 (float)
4.963 TFLOPS
2.961 TFLOPS
FP64 (double)
310.2 GFLOPS
185.1 GFLOPS
Graphics Processor
GPU Name
Polaris 20
Amethyst
GPU Variant
Polaris 20M XT
Amethyst XT
Architecture
GCN 4.0
GCN 3.0
Foundry
GlobalFoundries
TSMC
Process Size
14 nm
28 nm
Transistors
5.7 billion
5 billion
Die Size
232 mm²
366 mm²
Board Design
TDP
100W
250W
Outputs
No outputs
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.0
Vulkan
1.2
1.2
Shader Model
6.4
6.3