AMD Radeon R9 M395 Mac Edition vs AMD Radeon RX 580X Mobile
GPU Specs Compare
Graphics Card
Release Date
May 2015
Apr 2018
Generation
Crystal System
Mobility Radeon
Type
Mobile
Mobile
Bus Interface
MXM-B (3.0)
MXM-B (3.0)
Clock Speeds
Memory Clock
1365 MHz
2000 MHz
Base Clock
-
1000 MHz
Boost Clock
-
1077 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
174.7GB/s
256.0GB/s
Render Config
Compute Units
28
36
Shading Units
1792
2304
TMUs
112
144
ROPs
32
32
L1 Cache
-
16 KB (per CU)
L2 Cache
-
2 MB
Theoretical Performance
Pixel Rate
26.69 GPixel/s
34.46 GPixel/s
Texture Rate
93.41 GTexel/s
155.1 GTexel/s
FP32 (float)
2.989 TFLOPS
4.963 TFLOPS
FP64 (double)
373.6 GFLOPS
310.2 GFLOPS
FP16 (half)
-
4.963 TFLOPS
Graphics Processor
GPU Name
Amethyst
Polaris 20
GPU Variant
Amethyst PRO(216-0872004)
Polaris 20M XT
Architecture
GCN 3.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
5 billion
5.7 billion
Die Size
366 mm²
232 mm²
Board Design
TDP
250W
100W
Outputs
No outputs
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.0
2.1
Vulkan
1.2
1.2
Shader Model
6.3
6.4