AMD Radeon R9 M395X Mac Edition vs AMD Radeon R9 390X
GPU Specs Compare
Graphics Card
Release Date
May 2015
Jun 2015
Generation
Crystal System
Pirate Islands
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 3.0 x16
Clock Speeds
Memory Clock
1365 MHz
1500 MHz
Memory
Memory Size
4GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
512bit
Bandwidth
174.7GB/s
384.0GB/s
Render Config
Compute Units
32
44
Shading Units
2048
2816
TMUs
128
176
ROPs
32
64
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
1024 KB
Theoretical Performance
Pixel Rate
29.09 GPixel/s
67.20 GPixel/s
Texture Rate
116.4 GTexel/s
184.8 GTexel/s
FP16 (half)
3.723 TFLOPS
-
FP32 (float)
3.723 TFLOPS
5.914 TFLOPS
FP64 (double)
232.7 GFLOPS
739.2 GFLOPS
Graphics Processor
GPU Name
Amethyst
Grenada
GPU Variant
Amethyst XT
Grenada XT(215-0880004)
Architecture
GCN 3.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
5 billion
6.2 billion
Die Size
366 mm²
438 mm²
Board Design
TDP
250W
275W
Outputs
No outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
1x 6-pin + 1x 8-pin
Suggested PSU
-
600 W
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.0
2.0
Vulkan
1.2
1.2
Shader Model
6.3
6.3