GeForce GT 640M Mac Edition and Radeon HD 6750M Mac Edition - video card comparison
GeForce GT 640M Mac Edition
Radeon HD 6750M Mac Edition
Architecture
Kepler (2012−2018)
TeraScale 2 (2009−2015)
GPU code name
GK107
Whistler
Market segment
Desktop
Desktop
Release date
February 2013
April 2011
Interface
PCIe 3.0 x16
MXM-A (3.0)
Core clock speed
745 MHz
598 MHz
Floating-point performance
572.2 gflops
574.1 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
716 million
Pipelines / CUDA cores
384
480
Power consumption (TDP)
32 Watt
35 Watt
Texture fill rate
23.84
14.35
Memory type
GDDR5
GDDR5
Maximum RAM amount
512 MB
512 MB
Memory bus width
64 Bit
128 Bit
Memory clock speed
5000 MHz
3176 MHz
Memory bandwidth
40 GB/s
50.82 GB/s
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
11.2 (11_0)
CUDA
3.0
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
1.1.126
N/A