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GPU Comparison
AMD Radeon R9 M395X Mac Edition vs NVIDIA GeForce GT 645M
AMD Radeon R9 M395X Mac Edition vs NVIDIA GeForce GT 645M
VS
AMD Radeon R9 M395X Mac Edition
NVIDIA GeForce GT 645M
We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M395X Mac Edition and 2GB VRAM GeForce GT 645M 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
Released 2 years and 7 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (174.7GB/s vs 28.80GB/s)
1664 additional rendering cores
NVIDIA GeForce GT 645M 's Advantages
Lower TDP (32W vs 250W)
Score
Benchmark
FP32 (float)
Radeon R9 M395X Mac Edition
+584%
3.723 TFLOPS
GeForce GT 645M
0.544 TFLOPS
Radeon R9 M395X Mac Edition
VS
GeForce GT 645M
Graphics Card
May 2015
Release Date
Oct 2012
Crystal System
Generation
GeForce 600M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1365 MHz
Memory Clock
900 MHz
Memory
4GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
128bit
174.7GB/s
Bandwidth
28.80GB/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
16 KB (per SMX)
512 KB
L2 Cache
256 KB
Theoretical Performance
29.09 GPixel/s
Pixel Rate
5.672 GPixel/s
116.4 GTexel/s
Texture Rate
22.69 GTexel/s
3.723 TFLOPS
FP16 (half)
-
3.723 TFLOPS
FP32 (float)
544.5 GFLOPS
232.7 GFLOPS
FP64 (double)
22.69 GFLOPS
Graphics Processor
Amethyst
GPU Name
GK107
Amethyst XT
GPU Variant
N13P-GS
GCN 3.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
5 billion
Transistors
1.27 billion
366 mm²
Die Size
118 mm²
Board Design
250W
TDP
32W
-
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
1.1
-
CUDA
3.0
6.3
Shader Model
5.1
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