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GPU Comparison
AMD Radeon R9 M390 Mac Edition vs AMD Radeon HD 8850M
AMD Radeon R9 M390 Mac Edition vs AMD Radeon HD 8850M
VS
AMD Radeon R9 M390 Mac Edition
AMD Radeon HD 8850M
We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 2GB VRAM Radeon HD 8850M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 M390 Mac Edition 's Advantages
Released 2 years and 1 months late
Larger VRAM bandwidth (174.7GB/s vs 64.00GB/s)
384 additional rendering cores
AMD Radeon HD 8850M 's Advantages
Boost Clock625MHz
Score
Benchmark
FP32 (float)
Radeon R9 M390 Mac Edition
+145%
1.962 TFLOPS
Radeon HD 8850M
0.8 TFLOPS
Radeon R9 M390 Mac Edition
VS
Radeon HD 8850M
Graphics Card
May 2015
Release Date
Apr 2013
Crystal System
Generation
Solar System
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
575 MHz
-
Boost Clock
625 MHz
1365 MHz
Memory Clock
1000 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
174.7GB/s
Bandwidth
64.00GB/s
Render Config
-
SM Count
-
16
Compute Units
10
1024
Shading Units
640
64
TMUs
40
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
256 KB
Theoretical Performance
30.66 GPixel/s
Pixel Rate
10.00 GPixel/s
61.31 GTexel/s
Texture Rate
25.00 GTexel/s
-
FP16 (half)
-
1.962 TFLOPS
FP32 (float)
800.0 GFLOPS
122.6 GFLOPS
FP64 (double)
50.00 GFLOPS
Graphics Processor
Pitcairn
GPU Name
Venus
Pitcairn PRO (215-0828062)
GPU Variant
Venus PRO (216-0846009)
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
2.8 billion
Transistors
1.5 billion
212 mm²
Die Size
123 mm²
Board Design
80W
TDP
Unknown
-
Suggested PSU
-
No outputs
Outputs
Portable Device Dependent
None
Power Connectors
-
Graphics Features
12 (11_1)
DirectX
12 (11_1)
4.6
OpenGL
4.6
1.2
OpenCL
2.1 (1.2)
1.2
Vulkan
1.2.170
-
CUDA
-
5.1
Shader Model
6.5 (5.1)
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5
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7
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8
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9
AMD Radeon R9 M390 Mac Edition vs AMD Radeon R5 M335
10
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