Radeon HD 4250 and GeForce GT 640 OEM - video card comparison
Radeon HD 4250
GeForce GT 640 OEM
Architecture
RV6xx (2007−2010)
Kepler (2012−2018)
GPU code name
RS880M
GK107
Market segment
Laptop
Desktop
Release date
May 2010
April 2012
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
None
Core clock speed
500 MHz
797 MHz
Floating-point performance
47.52 gflops
612.1 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
181 million
1,270 million
Pipelines / CUDA cores
40
384
Power consumption (TDP)
25 Watt
50 Watt
Texture fill rate
2.376
25.50
Memory type
DDR2
DDR3
Maximum RAM amount
512 MB
2 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
792 MHz
1782 MHz
Memory bandwidth
6.336 GB/s
28.51 GB/s
Shared memory
+
-
Display Connectors
1x DVI, 1x VGA, 1x S-Video
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
10.1 (10_1)
12 (11_0)
CUDA
-
3.0
OpenCL
N/A
1.2
OpenGL
3.3
4.6
Shader Model
4.1
5.1
Vulkan
N/A
1.1.126