Radeon HD 7670A and GeForce GT 640 OEM Rebrand - video card comparison
Radeon HD 7670A
GeForce GT 640 OEM Rebrand
Architecture
TeraScale 2 (2009−2015)
Fermi 2.0 (2010−2014)
GPU code name
Turks
GF116
Market segment
Desktop
Desktop
Release date
January 2012
April 2012
Interface
MXM-A (3.0)
PCIe 2.0 x16
Supplementary power connectors
-
None
Core clock speed
600 MHz
720 MHz
Floating-point performance
576.0 gflops
414.7 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
716 million
1,170 million
Pipelines / CUDA cores
480
144
Power consumption (TDP)
45 Watt
75 Watt
Texture fill rate
14.40
17.28
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
1536 MB
Memory bus width
128 Bit
192 Bit
Memory clock speed
4000 MHz
1600 MHz
Memory bandwidth
64 GB/s
38.4 GB/s
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