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GPU Comparison
AMD Radeon R9 M395X Mac Edition vs NVIDIA GeForce 845M
AMD Radeon R9 M395X Mac Edition vs NVIDIA GeForce 845M
VS
AMD Radeon R9 M395X Mac Edition
NVIDIA GeForce 845M
We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M395X Mac Edition and 2GB VRAM GeForce 845M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 M395X Mac Edition 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (174.7GB/s vs 40.10GB/s)
1664 additional rendering cores
NVIDIA GeForce 845M 's Advantages
Boost Clock1176MHz
Lower TDP (33W vs 250W)
Score
Benchmark
FP32 (float)
Radeon R9 M395X Mac Edition
+312%
3.723 TFLOPS
GeForce 845M
0.903 TFLOPS
Radeon R9 M395X Mac Edition
VS
GeForce 845M
Graphics Card
May 2015
Release Date
Aug 2015
Crystal System
Generation
GeForce 800M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
1071 MHz
-
Boost Clock
1176 MHz
1365 MHz
Memory Clock
1253 MHz
Memory
4GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
64bit
174.7GB/s
Bandwidth
40.10GB/s
Render Config
-
SM Count
-
32
Compute Units
-
2048
Shading Units
384
128
TMUs
32
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
64 KB (per SMM)
512 KB
L2 Cache
1024 KB
Theoretical Performance
29.09 GPixel/s
Pixel Rate
18.82 GPixel/s
116.4 GTexel/s
Texture Rate
37.63 GTexel/s
3.723 TFLOPS
FP16 (half)
-
3.723 TFLOPS
FP32 (float)
903.2 GFLOPS
232.7 GFLOPS
FP64 (double)
28.22 GFLOPS
Graphics Processor
Amethyst
GPU Name
GM108
Amethyst XT
GPU Variant
-
GCN 3.0
Architecture
Maxwell
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
5 billion
Transistors
Unknown
366 mm²
Die Size
Unknown
Board Design
250W
TDP
33W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Features
12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.0
OpenCL
3.0
1.2
Vulkan
1.3
-
CUDA
5.0
6.3
Shader Model
5.1
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2
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5
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6
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7
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8
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9
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10
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