GeForce GTX 645 OEM and GeForce GT 645 OEM - video card comparison
GeForce GTX 645 OEM
GeForce GT 645 OEM
Architecture
Kepler (2012−2018)
Fermi 2.0 (2010−2014)
GPU code name
GK106
GF114
Market segment
Desktop
Desktop
Release date
April 2013
April 2012
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
-
Core clock speed
824 MHz
776 MHz
Floating-point performance
949.2 gflops
894.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
2,540 million
1,950 million
Pipelines / CUDA cores
576
288
Power consumption (TDP)
65 Watt
102 Watt
Texture fill rate
39.55
37.25
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
128 Bit
192 Bit
Memory clock speed
4000 MHz
3828 MHz
Memory bandwidth
64 GB/s
91.87 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x mini-HDMI
HDMI
+
+
DirectX
12 (11_0)
12 (11_0)
CUDA
3.0
2.1
OpenCL
1.2
1.1
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A