GeForce GT 640 Rev. 2 and Radeon 625 OEM - video card comparison
GeForce GT 640 Rev. 2
Radeon 625 OEM
Architecture
Kepler 2.0 (2013−2015)
GCN 3.0 (2014−2017)
GPU code name
GK208
Polaris 24
Market segment
Desktop
Desktop
Release date
May 2013
May 2019
Interface
PCIe 2.0 x8
PCIe 3.0 x8
Supplementary power connectors
None
None
Core clock speed
1046 MHz
1024 MHz
Floating-point performance
803.3 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
915 million
1,550 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
49 Watt
35 Watt
Texture fill rate
33.47
24.58
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
5008 MHz
4.5 GB/s
Memory bandwidth
40.06 GB/s
36 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
No outputs
HDMI
+
-
DirectX
12 (11_0)
12 (12_0)
CUDA
3.5
-
OpenCL
1.2
2.1
OpenGL
4.6
4.6
Shader Model
5.1
6.5 (6.0)
Vulkan
1.1.126
1.2.170