GeForce GT 640 and Radeon HD 7950 Monica BIOS 2 - video card comparison
GeForce GT 640
Radeon HD 7950 Monica BIOS 2
Architecture
Kepler (2012−2018)
GCN 1.0 (2012−2020)
GPU code name
GK107
Tahiti
Market segment
Desktop
Desktop
Release date
June 2012
January 2012
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
1x 6-pin + 1x 8-pin
Core clock speed
902 MHz
800 MHz
Floating-point performance
692.7 gflops
1,229 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
4,313 million
Pipelines / CUDA cores
384
768
Power consumption (TDP)
65 Watt
85 Watt
Texture fill rate
28.86
38.40
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
3 GB
Memory bus width
128 Bit
384 Bit
Memory clock speed
1782 MHz
5000 MHz
Memory bandwidth
28.51 GB/s
240.0 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
HDMI
+
+
DirectX
12 (11_0)
12 (11_1)
CUDA
3.0
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.2.131