GeForce GT 640 Rev. 2 and HD Graphics 4600 - video card comparison
GeForce GT 640 Rev. 2
HD Graphics 4600
Architecture
Kepler 2.0 (2013−2015)
Gen. 7.5 Haswell (2012−2013)
GPU code name
GK208
Haswell GT2
Market segment
Desktop
Laptop
Release date
May 2013
June 2013
Interface
PCIe 2.0 x8
PCIe 1.0 x16
Supplementary power connectors
None
-
Boost clock speed
-
1350 MHz
Core clock speed
1046 MHz
200 MHz
Floating-point performance
803.3 gflops
50 gflops
Manufacturing process technology
28 nm
22 nm
Number of transistors
915 million
392 million
Pipelines / CUDA cores
384
20
Power consumption (TDP)
49 Watt
45 Watt
Texture fill rate
33.47
27.00
Memory type
GDDR5
System Shared
Maximum RAM amount
1 GB
System Shared
Memory bus width
64 Bit
64/128 Bit
Memory clock speed
5008 MHz
System Shared
Memory bandwidth
40.06 GB/s
-
Shared memory
-
+
Display Connectors
1x DVI, 1x HDMI, 1x VGA
No outputs
HDMI
+
-
DirectX
12 (11_0)
12 (11_1)
CUDA
3.5
-
OpenCL
1.2
1.2
OpenGL
4.6
4.3
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.80
Quick Sync
-
+