GeForce GT 640M Mac Edition and Radeon HD 2400 - video card comparison
GeForce GT 640M Mac Edition
Radeon HD 2400
Architecture
Kepler (2012−2018)
TeraScale (2005−2013)
GPU code name
GK107
RV610
Market segment
Desktop
Desktop
Release date
February 2013
February 2008
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
-
None
Core clock speed
745 MHz
398 MHz
Floating-point performance
572.2 gflops
31.84 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
20 Watt
Texture fill rate
23.84
1.592
Memory type
GDDR5
DDR2
Maximum RAM amount
512 MB
256 MB
Memory bus width
64 Bit
64 Bit
Memory clock speed
5000 MHz
990 MHz
Memory bandwidth
40 GB/s
7.92 GB/s
Display Connectors
No outputs
1x DVI, 1x S-Video
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