Quadro K620 and GeForce GT 640 - video card comparison
Passmark - benchmark score Quadro K620 vs GeForce GT 640
Quadro K620
2297
GeForce GT 640
1209
Quadro K620
GeForce GT 640
Architecture
Maxwell (2014−2018)
Kepler (2012−2018)
GPU code name
GM107
GK107
Market segment
Workstation
Desktop
Release date
July 2014
June 2012
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
None
Boost clock speed
1124 MHz
-
Core clock speed
1058 MHz
902 MHz
Floating-point performance
863.2 gflops
692.7 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,870 million
1,270 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
41 Watt
65 Watt
Texture fill rate
26.98
28.86
Memory type
128 Bit
DDR3
Maximum RAM amount
2 GB
2 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1800 MHz
1782 MHz
Memory bandwidth
Up to 29 GB/s
28.51 GB/s
Display Connectors
DVI-I DP
1x DVI, 1x HDMI, 1x DisplayPort
Number of simultaneous displays
4
-
HDMI
-
+
DirectX
12
12 (11_0)
CUDA
5.0
3.0
OpenCL
1.2
1.2
OpenGL
4.5
4.6
Shader Model
5
5.1
Vulkan
+
1.1.126
3D Vision Pro
+
-
Mosaic
+
-
nView Desktop Management
+
-