GeForce GTX 745 OEM and GeForce GTX 645 OEM - video card comparison
GeForce GTX 745 OEM
GeForce GTX 645 OEM
Architecture
Maxwell (2014−2018)
Kepler (2012−2018)
GPU code name
GM107
GK106
Market segment
Desktop
Desktop
Release date
February 2014
April 2013
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
None
Core clock speed
1033 MHz
824 MHz
Floating-point performance
793.3 gflops
949.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,870 million
2,540 million
Pipelines / CUDA cores
384
576
Power consumption (TDP)
55 Watt
65 Watt
Texture fill rate
24.79
39.55
Memory type
DDR3
GDDR5
Maximum RAM amount
4 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1800 MHz
4000 MHz
Memory bandwidth
28.8 GB/s
64 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (11_0)
12 (11_0)
CUDA
5.0
3.0
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126