GeForce GTX 660 OEM and Radeon HD 2600 PRO AGP - video card comparison
GeForce GTX 660 OEM
Radeon HD 2600 PRO AGP
Architecture
Kepler (2012−2018)
TeraScale (2005−2013)
GPU code name
GK104
RV630
Market segment
Desktop
Desktop
Release date
August 2012
June 2007
Interface
PCIe 3.0 x16
AGP 8x
Supplementary power connectors
1x 6-pin
None
Boost clock speed
888 MHz
-
Core clock speed
823 MHz
594 MHz
Floating-point performance
2,046 gflops
142.56 gflops
Manufacturing process technology
28 nm
65 nm
Number of transistors
3,540 million
390 million
Pipelines / CUDA cores
1152
120
Power consumption (TDP)
130 Watt
35 Watt
Texture fill rate
85.25
4.752
Memory type
GDDR5
DDR2
Maximum RAM amount
2 GB
512 MB
Memory bus width
256 Bit
128 Bit
Memory clock speed
5600 MHz
792 MHz
Memory bandwidth
179.2 GB/s
12.67 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x VGA, 1x S-Video
HDMI
+
-
DirectX
12 (11_0)
10.0 (10_0)
CUDA
3.0
-
OpenCL
1.2
N/A
OpenGL
4.6
3.3
Shader Model
5.1
4.0
Vulkan
1.1.126
N/A