GeForce GT 640M Mac Edition and Radeon E2400 - video card comparison
GeForce GT 640M Mac Edition
Radeon E2400
Architecture
Kepler (2012−2018)
TeraScale (2005−2013)
GPU code name
GK107
RV610
Market segment
Desktop
Desktop
Release date
February 2013
June 2007
Interface
PCIe 3.0 x16
MXM-II
Core clock speed
745 MHz
600 MHz
Floating-point performance
572.2 gflops
48 gflops
Manufacturing process technology
28 nm
65 nm
Number of transistors
1,270 million
180 million
Pipelines / CUDA cores
384
40
Power consumption (TDP)
32 Watt
25 Watt
Texture fill rate
23.84
2.400
Memory type
GDDR5
GDDR3
Maximum RAM amount
512 MB
128 MB
Memory bus width
64 Bit
64 Bit
Memory clock speed
5000 MHz
1400 MHz
Memory bandwidth
40 GB/s
11.2 GB/s
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
10.0 (10_0)
CUDA
3.0
-
OpenCL
1.2
N/A
OpenGL
4.6
3.3
Shader Model
5.1
4.0
Vulkan
1.1.126
N/A