AMD Radeon R9 M395X Mac Edition vs AMD Radeon R9 M290X
GPU Specs Compare
Graphics Card
Release Date
May 2015
Jan 2014
Generation
Crystal System
Gem System
Type
Mobile
Mobile
Bus Interface
MXM-B (3.0)
PCIe 3.0 x16
Clock Speeds
Memory Clock
1365 MHz
1200 MHz
Base Clock
-
850 MHz
Boost Clock
-
900 MHz
Memory
Memory Size
4GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
174.7GB/s
153.6GB/s
Render Config
Compute Units
32
20
Shading Units
2048
1280
TMUs
128
80
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
29.09 GPixel/s
28.80 GPixel/s
Texture Rate
116.4 GTexel/s
72.00 GTexel/s
FP16 (half)
3.723 TFLOPS
-
FP32 (float)
3.723 TFLOPS
2.304 TFLOPS
FP64 (double)
232.7 GFLOPS
144.0 GFLOPS
Graphics Processor
GPU Name
Amethyst
Neptune
GPU Variant
Amethyst XT
Neptune XT(216-0847000)
Architecture
GCN 3.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
5 billion
2.8 billion
Die Size
366 mm²
212 mm²
Board Design
TDP
250W
100W
Outputs
No outputs
Portable Device Dependent
Power Connectors
None
None
Graphics Features
DirectX
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.0
2.1 (1.2)
Vulkan
1.2
1.2.170
Shader Model
6.3
6.5 (5.1)