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GPU Comparison
AMD Radeon R9 M295X vs NVIDIA GeForce GT 640M Mac Edition
AMD Radeon R9 M295X vs NVIDIA GeForce GT 640M Mac Edition
VS
AMD Radeon R9 M295X
NVIDIA GeForce GT 640M Mac Edition
We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M295X and 512MB VRAM GeForce GT 640M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 M295X 's Advantages
Released 1 years and 9 months late
More VRAM (4GB vs 512GB)
Larger VRAM bandwidth (160.0GB/s vs 40.00GB/s)
1664 additional rendering cores
NVIDIA GeForce GT 640M Mac Edition 's Advantages
Lower TDP (32W vs 250W)
Score
Benchmark
FP32 (float)
Radeon R9 M295X
+417%
2.961 TFLOPS
GeForce GT 640M Mac Edition
0.572 TFLOPS
Radeon R9 M295X
VS
GeForce GT 640M Mac Edition
Graphics Card
Nov 2014
Release Date
Feb 2013
Crystal System
Generation
GeForce 600M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
1250 MHz
Memory
4GB
Memory Size
512MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
64bit
160.0GB/s
Bandwidth
40.00GB/s
Render Config
32
Compute Units
-
-
-
-
2048
Shading Units
384
128
TMUs
32
32
ROPs
8
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per SMX)
512 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
23.14 GPixel/s
Pixel Rate
5.960 GPixel/s
92.54 GTexel/s
Texture Rate
23.84 GTexel/s
2.961 TFLOPS
FP16 (half)
-
2.961 TFLOPS
FP32 (float)
572.2 GFLOPS
185.1 GFLOPS
FP64 (double)
23.84 GFLOPS
Board Design
250W
TDP
32W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
-
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
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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