GeForce GT 640 and HD Graphics 2500 - video card comparison
GeForce GT 640
HD Graphics 2500
Architecture
Kepler (2012−2018)
Gen. 7 Ivy Bridge (2011−2012)
GPU code name
GK107
Ivy Bridge GT1
Market segment
Desktop
Laptop
Release date
June 2012
April 2012
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
None
-
Boost clock speed
-
1150 MHz
Core clock speed
902 MHz
650 MHz
Floating-point performance
692.7 gflops
13.8 gflops
Manufacturing process technology
28 nm
22 nm
Number of transistors
1,270 million
392 million
Pipelines / CUDA cores
384
6
Power consumption (TDP)
65 Watt
unknown
Texture fill rate
28.86
6.900
Memory type
DDR3
System Shared
Maximum RAM amount
2 GB
System Shared
Memory bus width
128 Bit
64/128 Bit
Memory clock speed
1782 MHz
System Shared
Memory bandwidth
28.51 GB/s
-
Shared memory
-
+
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (11_0)
11.1 (11_0)
CUDA
3.0
-
OpenCL
1.2
1.2
OpenGL
4.6
4.0
Shader Model
5.1
5.0
Vulkan
1.1.126
1.1.80