Radeon HD 7640G and GeForce GT 640 OEM Rebrand - video card comparison
Radeon HD 7640G
GeForce GT 640 OEM Rebrand
Architecture
Terascale 3 (2010−2013)
Fermi 2.0 (2010−2014)
GPU code name
Trinity
GF116
Market segment
Laptop
Desktop
Release date
May 2012
April 2012
Interface
IGP
PCIe 2.0 x16
Supplementary power connectors
-
None
Boost clock speed
686 MHz
-
Core clock speed
497 MHz
720 MHz
Floating-point performance
-
414.7 gflops
Manufacturing process technology
32 nm
40 nm
Number of transistors
1,303 million
1,170 million
Pipelines / CUDA cores
256
144
Power consumption (TDP)
35 Watt
75 Watt
Texture fill rate
10.96
17.28
Memory type
System Shared
DDR3
Maximum RAM amount
System Shared
1536 MB
Memory bus width
System Shared
192 Bit
Memory clock speed
System Shared
1600 MHz
Memory bandwidth
-
38.4 GB/s
Shared memory
+
-
Display Connectors
No outputs
2x DVI, 1x mini-HDMI
HDMI
-
+
DirectX
11.2 (11_0)
12 (11_0)
CUDA
-
2.1
OpenCL
1.2
1.1
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
N/A