GeForce GTS 450 and GeForce GTX 645 OEM - video card comparison
GeForce GTS 450
GeForce GTX 645 OEM
Architecture
Fermi (2010−2014)
Kepler (2012−2018)
GPU code name
GF106
GK106
Market segment
Desktop
Desktop
Release date
September 2010
April 2013
Bus support
PCI-E 2.0 x 16
-
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
6-pin
None
SLI options
+
-
Core clock speed
783 MHz
824 MHz
CUDA cores
192
-
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
Maximum GPU temperature
100 °C
-
Texture fill rate
25.1 billion/sec
39.55
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1804 (3608 data rate) MHz
4000 MHz
Memory bandwidth
57.7 GB/s
64 GB/s
Display Connectors
Mini HDMITwo Dual Link DVI
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 (11_0)
CUDA
+
3.0
OpenCL
1.1
1.2
OpenGL
4.2
4.6
Shader Model
5.1
5.1
Vulkan
N/A
1.1.126