GeForce GT 640M Mac Edition and Radeon HD 4670 - video card comparison
GeForce GT 640M Mac Edition
Radeon HD 4670
Architecture
Kepler (2012−2018)
TeraScale (2005−2013)
GPU code name
GK107
RV730
Market segment
Desktop
Desktop
Release date
February 2013
September 2008
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
-
None
Core clock speed
745 MHz
750 MHz
Floating-point performance
572.2 gflops
480.0 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
1,270 million
514 million
Pipelines / CUDA cores
384
320
Power consumption (TDP)
32 Watt
59 Watt
Texture fill rate
23.84
24.00
Memory type
GDDR5
GDDR3
Maximum RAM amount
512 MB
512 MB
Memory bus width
64 Bit
128 Bit
Memory clock speed
5000 MHz
2000 MHz
Memory bandwidth
40 GB/s
32 GB/s
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
12 (11_0)
10.1 (10_1)
CUDA
3.0
-
OpenCL
1.2
1.1
OpenGL
4.6
3.3
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A