Radeon HD 5770 and GeForce GT 640 Rev. 2 - video card comparison
Radeon HD 5770
GeForce GT 640 Rev. 2
Architecture
Terascale 2 (2009−2015)
Kepler 2.0 (2013−2015)
GPU code name
Juniper
GK208
Market segment
Desktop
Desktop
Release date
October 2009
May 2013
Interface
PCIe 2.0 x16
PCIe 2.0 x8
Supplementary power connectors
1x 6-pin
None
Core clock speed
850 MHz
1046 MHz
Floating-point performance
1,360.0 gflops
803.3 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,040 million
915 million
Pipelines / CUDA cores
800
384
Power consumption (TDP)
108 Watt
49 Watt
Texture fill rate
34.00
33.47
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
4800 MHz
5008 MHz
Memory bandwidth
76.8 GB/s
40.06 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x VGA
HDMI
+
+
DirectX
11.2 (11_0)
12 (11_0)
CUDA
-
3.5
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
1.1.126