GeForce GT 640 and Radeon HD 4250 - video card comparison
Passmark - benchmark score GeForce GT 640 vs Radeon HD 4250
GeForce GT 640
1209
Radeon HD 4250
126
GeForce GT 640
Radeon HD 4250
Architecture
Kepler (2012−2018)
RV6xx (2007−2010)
GPU code name
GK107
RS880M
Market segment
Desktop
Laptop
Release date
June 2012
May 2010
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
None
Core clock speed
902 MHz
500 MHz
Floating-point performance
692.7 gflops
47.52 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
1,270 million
181 million
Pipelines / CUDA cores
384
40
Power consumption (TDP)
65 Watt
25 Watt
Texture fill rate
28.86
2.376
Memory type
DDR3
DDR2
Maximum RAM amount
2 GB
512 MB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1782 MHz
792 MHz
Memory bandwidth
28.51 GB/s
6.336 GB/s
Shared memory
-
+
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x VGA, 1x S-Video
HDMI
+
-
DirectX
12 (11_0)
10.1 (10_1)
CUDA
3.0
-
OpenCL
1.2
N/A
OpenGL
4.6
3.3
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A