GeForce GT 640 vs Quadro K420
In this comparison between GeForce GT 640 and Quadro K420 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 640 will be the best choice, for others Quadro K420 will be their preference. Study the comparison tables below and make your choice.
Main Specs
GeForce GT 640
Quadro K420
Power consumption (TDP)
65 Watt
41 Watt
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
None
Memory type
DDR3
128 Bit
Maximum RAM amount
2 GB
1 GB/2 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x DisplayPort
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GeForce GT 640 has 58% more power consumption, than Quadro K420.
GeForce GT 640 is connected by PCIe 3.0 x16, and Quadro K420 uses PCIe 2.0 x16 interface.
GeForce GT 640 has 1 GB more memory, than Quadro K420.
Both cards are used in Desktops.
GeForce GT 640 and Quadro K420 are build with Kepler architecture.
Core clock speed of GeForce GT 640 is 26 MHz higher, than Quadro K420.
GeForce GT 640 and Quadro K420 are manufactured by 28 nm process technology.
Quadro K420 is 15 mm longer, than GeForce GT 640.
Memory clock speed of GeForce GT 640 and Quadro K420 is 1782 MHz.
Game benchmarks
Assassin's Creed Odyssey
Battlefield 5
Call of Duty: Warzone
Counter-Strike: Global Offensive
Cyberpunk 2077
Dota 2
Far Cry 5
Fortnite
Forza Horizon 4
Grand Theft Auto V
Metro Exodus
Minecraft
PLAYERUNKNOWN'S BATTLEGROUNDS
Red Dead Redemption 2
The Witcher 3: Wild Hunt
World of Tanks
high / 1080p
2−3
0−1
ultra / 1080p
1−2
0−1
QHD / 1440p
0−1
0−1
low / 720p
14−16
9−10
medium / 1080p
5−6
1−2
The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 100% more, than Quadro K420.
high / 1080p
7−8
−
ultra / 1080p
5−6
1−2
QHD / 1440p
0−1
0−1
low / 720p
20−22
9−10
medium / 1080p
7−8
2−3
The average gaming FPS of GeForce GT 640 in Battlefield 5 is 175% more, than Quadro K420.
low / 768p
50−55
50−55
high / 1080p
35−40
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of Quadro K420 in Call of Duty: Warzone is 11% more, than GeForce GT 640.
low / 768p
110−120
100−110
medium / 768p
90−95
75−80
ultra / 1080p
45−50
30−35
QHD / 1440p
24−27
−
4K / 2160p
18−20
9−10
high / 768p
65−70
50−55
The average gaming FPS of GeForce GT 640 in Counter-Strike: Global Offensive is 23% more, than Quadro K420.
low / 768p
70−75
70−75
ultra / 1080p
21−24
10−12
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640 in Cyberpunk 2077 is 9% more, than Quadro K420.
low / 768p
70−75
65−70
medium / 768p
50−55
35−40
ultra / 1080p
27−30
14−16
The average gaming FPS of GeForce GT 640 in Dota 2 is 27% more, than Quadro K420.
high / 1080p
3−4
1−2
ultra / 1080p
3−4
−
4K / 2160p
2−3
0−1
low / 720p
14−16
7−8
medium / 1080p
4−5
2−3
The average gaming FPS of GeForce GT 640 in Far Cry 5 is 133% more, than Quadro K420.
high / 1080p
10−12
−
ultra / 1080p
5−6
−
QHD / 1440p
2−3
0−1
low / 720p
50−55
40−45
medium / 1080p
16−18
4−5
The average gaming FPS of GeForce GT 640 in Fortnite is 47% more, than Quadro K420.
high / 1080p
6−7
1−2
QHD / 1440p
4−5
0−1
4K / 2160p
2−3
−
low / 720p
21−24
10−12
medium / 1080p
9−10
3−4
The average gaming FPS of GeForce GT 640 in Forza Horizon 4 is 140% more, than Quadro K420.
low / 768p
45−50
35−40
high / 1080p
7−8
1−2
ultra / 1080p
3−4
−
QHD / 1440p
0−1
0−1
medium / 720p
40−45
30−35
The average gaming FPS of GeForce GT 640 in Grand Theft Auto V is 39% more, than Quadro K420.
high / 1080p
2−3
0−1
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
0−1
low / 720p
8−9
1−2
medium / 1080p
4−5
−
The average gaming FPS of GeForce GT 640 in Metro Exodus is 700% more, than Quadro K420.
low / 768p
80−85
85−90
high / 1080p
−
50−55
ultra / 1080p
70−75
−
The average gaming FPS of Quadro K420 in Minecraft is 6% more, than GeForce GT 640.
high / 1080p
−
14−16
ultra / 1080p
12−14
12−14
low / 720p
27−30
21−24
medium / 1080p
14−16
14−16
The average gaming FPS of GeForce GT 640 in PLAYERUNKNOWN'S BATTLEGROUNDS is 12% more, than Quadro K420.
high / 1080p
6−7
−
ultra / 1080p
4−5
−
QHD / 1440p
0−1
0−1
low / 720p
7−8
2−3
The average gaming FPS of GeForce GT 640 in Red Dead Redemption 2 is 250% more, than Quadro K420.
low / 768p
14−16
4−5
medium / 768p
10−11
−
high / 1080p
5−6
2−3
ultra / 1080p
4−5
−
4K / 2160p
0−1
0−1
The average gaming FPS of GeForce GT 640 in The Witcher 3: Wild Hunt is 233% more, than Quadro K420.
low / 768p
70−75
65−70
medium / 768p
35−40
30−35
ultra / 1080p
16−18
10−12
high / 768p
30−35
27−30
The average gaming FPS of GeForce GT 640 in World of Tanks is 14% more, than Quadro K420.
Full Specs
GeForce GT 640
Quadro K420
Architecture
Kepler
Kepler
Code name
GK107
GK107
Type
Desktop
Workstation
Release date
5 June 2012
22 July 2014
Pipelines
384
192
Core clock speed
902 MHz
876 MHz
Transistor count
1,270 million
1,270 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
28.86
14.02
Floating-point performance
692.7 gflops
336.4 gflops
Length
145 mm
160 mm
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
1782 MHz
Memory bandwidth
28.51 GB/s
DirectX
12 (11_0)
12
Shader Model
5.1
5
OpenGL
4.6
4.5
OpenCL
1.2
1.2
Vulkan
1.1.126
+
CUDA
3.0
3.0
Bitcoin / BTC (SHA256)
24 Mh/s
11 Mh/s
3D Vision Pro
+
Mosaic
+
Width
1" (2.5 cm)
Number of simultaneous displays
4
nView Desktop Management
+
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