GeForce 8600 GT and GeForce GTX 645 OEM - video card comparison
GeForce 8600 GT
GeForce GTX 645 OEM
Architecture
Tesla (2006−2010)
Kepler (2012−2018)
GPU code name
G84
GK106
Market segment
Desktop
Desktop
Release date
April 2007
April 2013
Interface
PCIe 1.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
None
SLI options
+
-
Core clock speed
540 MHz
824 MHz
Floating-point performance
76.16 gflops
949.2 gflops
Manufacturing process technology
80 nm
28 nm
Number of transistors
289 million
2,540 million
Pipelines / CUDA cores
32
576
Power consumption (TDP)
47 Watt
65 Watt
Texture fill rate
8.6 billion/sec
39.55
Memory type
GDDR3
GDDR5
Maximum RAM amount
512 MB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
700 MHz
4000 MHz
Memory bandwidth
22.4 GB/s
64 GB/s
Standard memory config per GPU
256 MB
-
Display Connectors
2x DVI, 1x S-Video
1x 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