GeForce GT 640M Mac Edition vs Radeon R7 M260
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 2GB VRAM Radeon R7 M260 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GT 640M Mac Edition 's Advantages
Larger VRAM bandwidth (40.00GB/s vs 14.40GB/s)
Radeon R7 M260 's Advantages
Released 1 years and 4 months late
Boost Clock980MHz
More VRAM (2GB vs 512GB)
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
572
Radeon R7 M260
+31%
752
Graphics Card
Feb 2013
Release Date
Jun 2014
GeForce 600M
Generation
Gem System
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
940 MHz
-
Boost Clock
980 MHz
1250 MHz
Memory Clock
900 MHz
Memory
512MB
Memory Size
2GB
GDDR5
Memory Type
DDR3
64bit
Memory Bus
64bit
40.00GB/s
Bandwidth
14.40GB/s
Render Config
-
Compute Units
6
384
Shading Units
384
32
TMUs
24
8
ROPs
8
16 KB (per SMX)
L1 Cache
16 KB (per CU)
128 KB
L2 Cache
128 KB
Theoretical Performance
5.960 GPixel/s
Pixel Rate
7.840 GPixel/s
23.84 GTexel/s
Texture Rate
23.52 GTexel/s
-
FP16 (half)
752.6 GFLOPS
572.2 GFLOPS
FP32 (float)
752.6 GFLOPS
23.84 GFLOPS
FP64 (double)
47.04 GFLOPS
Board Design
32W
TDP
Unknown
No outputs
Outputs
Portable Device Dependent
Graphics Processor
GK107
GPU Name
Topaz
N13P-GS
GPU Variant
Topaz XT
(216-0858020)
Kepler
Architecture
GCN 3.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
1.55 billion
118 mm²
Die Size
125 mm²
Graphics Features
12 (11_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
3.0
OpenCL
2.1
1.1
Vulkan
1.2.170
3.0
CUDA
-
5.1
Shader Model
6.5
