GeForce 8600 GT and GeForce GTX 660 Rev. 2 - video card comparison
GeForce 8600 GT
GeForce GTX 660 Rev. 2
Architecture
Tesla (2006−2010)
Kepler (2012−2018)
GPU code name
G84
GK104
Market segment
Desktop
Desktop
Release date
April 2007
September 2014
Interface
PCIe 1.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
1x 6-pin
SLI options
+
-
Boost clock speed
-
1032 MHz
Core clock speed
540 MHz
980 MHz
Floating-point performance
76.16 gflops
1,981 gflops
Manufacturing process technology
80 nm
28 nm
Number of transistors
289 million
3,540 million
Pipelines / CUDA cores
32
960
Power consumption (TDP)
47 Watt
140 Watt
Texture fill rate
8.6 billion/sec
82.56
Memory type
GDDR3
GDDR5
Maximum RAM amount
512 MB
2 GB
Memory bus width
128 Bit
192 Bit
Memory clock speed
700 MHz
6008 MHz
Memory bandwidth
22.4 GB/s
144.2 GB/s
Standard memory config per GPU
256 MB
-
Display Connectors
2x DVI, 1x S-Video
2x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
11.1 (10_0)
12 (11_0)
CUDA
1.1
3.0
OpenCL
1.1
1.2
OpenGL
2.1
4.6
Shader Model
4.0
5.1
Vulkan
N/A
1.1.126