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GPU Comparison
AMD Radeon R9 M395X vs AMD Radeon R9 M390 Mac Edition
AMD Radeon R9 M395X vs AMD Radeon R9 M390 Mac Edition
VS
AMD Radeon R9 M395X
AMD Radeon R9 M390 Mac Edition
We compared two Mobile platform GPUs: 8GB VRAM Radeon R9 M395X and 2GB VRAM Radeon R9 M390 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 M395X 's Advantages
More VRAM (8GB vs 2GB)
1024 additional rendering cores
Lower TDP (75W vs 80W)
AMD Radeon R9 M390 Mac Edition 's Advantages
Larger VRAM bandwidth (174.7GB/s vs 160.0GB/s)
Score
Benchmark
FP32 (float)
Radeon R9 M395X
+50%
2.961 TFLOPS
Radeon R9 M390 Mac Edition
1.962 TFLOPS
Radeon R9 M395X
VS
Radeon R9 M390 Mac Edition
Graphics Card
May 2015
Release Date
May 2015
Crystal System
Generation
Crystal System
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
1365 MHz
Memory
8GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
160.0GB/s
Bandwidth
174.7GB/s
Render Config
32
Compute Units
16
-
-
-
2048
Shading Units
1024
128
TMUs
64
32
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
23.14 GPixel/s
Pixel Rate
30.66 GPixel/s
92.54 GTexel/s
Texture Rate
61.31 GTexel/s
2.961 TFLOPS
FP16 (half)
-
2.961 TFLOPS
FP32 (float)
1.962 TFLOPS
185.1 GFLOPS
FP64 (double)
122.6 GFLOPS
Board Design
75W
TDP
80W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Processor
Amethyst
GPU Name
Pitcairn
Amethyst XT
GPU Variant
Pitcairn PRO (215-0828062)
GCN 3.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
5 billion
Transistors
2.8 billion
366 mm²
Die Size
212 mm²
Graphics Features
12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.0
OpenCL
1.2
1.2
Vulkan
1.2
-
-
-
6.3
Shader Model
5.1
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