GeForce GT 640 and Quadro K420 - video card comparison
Passmark - benchmark score GeForce GT 640 vs Quadro K420
GeForce GT 640
1209
Quadro K420
768
GeForce GT 640
Quadro K420
Architecture
Kepler (2012−2018)
Kepler (2012−2018)
GPU code name
GK107
GK107
Market segment
Desktop
Workstation
Release date
June 2012
July 2014
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
None
Core clock speed
902 MHz
876 MHz
Floating-point performance
692.7 gflops
336.4 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
1,270 million
Pipelines / CUDA cores
384
192
Power consumption (TDP)
65 Watt
41 Watt
Texture fill rate
28.86
14.02
Memory type
DDR3
128 Bit
Maximum RAM amount
2 GB
1 GB/2 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
1782 MHz
Memory bandwidth
28.51 GB/s
Up to 29 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
DVI-I DP
Number of simultaneous displays
-
4
HDMI
+
-
DirectX
12 (11_0)
12
CUDA
3.0
3.0
OpenCL
1.2
1.2
OpenGL
4.6
4.5
Shader Model
5.1
5
Vulkan
1.1.126
+
3D Vision Pro
-
+
Mosaic
-
+
nView Desktop Management
-
+