GeForce GTX 645 OEM and Quadro P620 - video card comparison
GeForce GTX 645 OEM
Quadro P620
Architecture
Kepler (2012−2018)
Pascal (2016−2021)
GPU code name
GK106
GP107
Market segment
Desktop
Workstation
Release date
April 2013
May 2019
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
None
Boost clock speed
-
1442 MHz
Core clock speed
824 MHz
1177 MHz
Floating-point performance
949.2 gflops
1,490 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
2,540 million
3,300 million
Pipelines / CUDA cores
576
512
Power consumption (TDP)
65 Watt
25 Watt
Texture fill rate
39.55
43.33
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4000 MHz
6000 MHz
Memory bandwidth
64 GB/s
80.13 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
4x mini-DisplayPort
HDMI
+
-
DirectX
12 (11_0)
12 (12_1)
CUDA
3.0
6.1
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
6.4
Vulkan
1.1.126
1.2.131