GeForce GT 640 and Radeon R9 260 OEM - video card comparison
GeForce GT 640
Radeon R9 260 OEM
Architecture
Kepler (2012−2018)
GCN 2.0 (2013−2017)
GPU code name
GK107
Bonaire
Market segment
Desktop
Desktop
Release date
June 2012
December 2013
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
1x 6-pin
Core clock speed
902 MHz
1100 MHz
Floating-point performance
692.7 gflops
1,971 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
2,080 million
Pipelines / CUDA cores
384
896
Power consumption (TDP)
65 Watt
85 Watt
Texture fill rate
28.86
61.60
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
6500 MHz
Memory bandwidth
28.51 GB/s
104.0 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
HDMI
+
+
DirectX
12 (11_0)
12 (12_0)
CUDA
3.0
-
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.3
Vulkan
1.1.126
1.2.131