GeForce GTS 450 Rev. 2 and GeForce GTX 645 OEM - video card comparison
GeForce GTS 450 Rev. 2
GeForce GTX 645 OEM
Architecture
Fermi 2.0 (2010−2014)
Kepler (2012−2018)
GPU code name
GF116
GK106
Market segment
Desktop
Desktop
Release date
March 2011
April 2013
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
None
Core clock speed
783 MHz
824 MHz
Floating-point performance
601.3 gflops
949.2 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,170 million
2,540 million
Pipelines / CUDA cores
192
576
Power consumption (TDP)
106 Watt
65 Watt
Texture fill rate
25.06
39.55
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
3608 MHz
4000 MHz
Memory bandwidth
57.73 GB/s
64 GB/s
Display Connectors
2x DVI, 1x mini-HDMI
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (11_0)
12 (11_0)
CUDA
2.1
3.0
OpenCL
1.1
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
N/A
1.1.126