GeForce GT 640 vs Quadro K620M
In this comparison between GeForce GT 640 and Quadro K620M 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 K620M will be their preference. Study the comparison tables below and make your choice.
Quadro K620M is a Laptop Graphics Card
Note: Quadro K620M is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Quadro K620M here:
Main Specs
GeForce GT 640
Quadro K620M
Power consumption (TDP)
65 Watt
30 Watt
Interface
PCIe 3.0 x16
MXM-A (3.0)
Supplementary power connectors
None
None
Memory type
DDR3
DDR3
Maximum RAM amount
2 GB
2 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
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GeForce GT 640 has 116% more power consumption, than Quadro K620M.
GeForce GT 640 is connected by PCIe 3.0 x16, and Quadro K620M uses MXM-A (3.0) interface.
GeForce GT 640 and Quadro K620M have maximum RAM of 2 GB.
GeForce GT 640 is used in Desktops, and Quadro K620M - in Mobile workstations.
GeForce GT 640 is build with Kepler architecture, and Quadro K620M - with Maxwell.
Core clock speed of Quadro K620M is 127 MHz higher, than GeForce GT 640.
GeForce GT 640 and Quadro K620M are manufactured by 28 nm process technology.
Memory clock speed of Quadro K620M is 218 MHz higher, than GeForce GT 640.
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
3−4
ultra / 1080p
1−2
1−2
QHD / 1440p
0−1
0−1
low / 720p
14−16
14−16
medium / 1080p
5−6
5−6
GeForce GT 640 and Quadro K620M have the same average FPS in Assassin's Creed Odyssey.
high / 1080p
7−8
7−8
ultra / 1080p
5−6
5−6
QHD / 1440p
0−1
0−1
low / 720p
20−22
18−20
medium / 1080p
7−8
8−9
GeForce GT 640 and Quadro K620M have the same average FPS in Battlefield 5.
low / 768p
50−55
45−50
high / 1080p
35−40
40−45
QHD / 1440p
0−1
0−1
GeForce GT 640 and Quadro K620M have the same average FPS in Call of Duty: Warzone.
low / 768p
110−120
120−130
medium / 768p
90−95
95−100
ultra / 1080p
45−50
45−50
QHD / 1440p
24−27
24−27
4K / 2160p
18−20
−
high / 768p
65−70
70−75
The average gaming FPS of Quadro K620M in Counter-Strike: Global Offensive is 5% more, than GeForce GT 640.
low / 768p
70−75
70−75
ultra / 1080p
21−24
20−22
medium / 1080p
45−50
40−45
The average gaming FPS of GeForce GT 640 in Cyberpunk 2077 is 4% more, than Quadro K620M.
low / 768p
70−75
75−80
medium / 768p
50−55
55−60
ultra / 1080p
27−30
27−30
The average gaming FPS of Quadro K620M in Dota 2 is 5% more, than GeForce GT 640.
high / 1080p
3−4
4−5
ultra / 1080p
3−4
3−4
4K / 2160p
2−3
0−1
low / 720p
14−16
14−16
medium / 1080p
4−5
5−6
The average gaming FPS of Quadro K620M in Far Cry 5 is 16% more, than GeForce GT 640.
high / 1080p
10−12
12−14
ultra / 1080p
5−6
7−8
QHD / 1440p
2−3
4−5
low / 720p
50−55
55−60
medium / 1080p
16−18
14−16
The average gaming FPS of Quadro K620M in Fortnite is 11% more, than GeForce GT 640.
high / 1080p
6−7
6−7
ultra / 1080p
−
6−7
QHD / 1440p
4−5
0−1
4K / 2160p
2−3
−
low / 720p
21−24
21−24
medium / 1080p
9−10
9−10
GeForce GT 640 and Quadro K620M have the same average FPS in Forza Horizon 4.
low / 768p
45−50
45−50
high / 1080p
7−8
8−9
ultra / 1080p
3−4
3−4
QHD / 1440p
0−1
0−1
medium / 720p
40−45
40−45
GeForce GT 640 and Quadro K620M have the same average FPS in Grand Theft Auto V.
high / 1080p
2−3
2−3
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
0−1
low / 720p
8−9
7−8
medium / 1080p
4−5
3−4
The average gaming FPS of GeForce GT 640 in Metro Exodus is 25% more, than Quadro K620M.
low / 768p
80−85
85−90
high / 1080p
−
65−70
ultra / 1080p
70−75
−
The average gaming FPS of Quadro K620M in Minecraft is 6% more, than GeForce GT 640.
ultra / 1080p
12−14
12−14
low / 720p
27−30
27−30
medium / 1080p
14−16
14−16
GeForce GT 640 and Quadro K620M have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
high / 1080p
6−7
6−7
ultra / 1080p
4−5
4−5
QHD / 1440p
0−1
0−1
low / 720p
7−8
7−8
GeForce GT 640 and Quadro K620M have the same average FPS in Red Dead Redemption 2.
low / 768p
14−16
16−18
medium / 768p
10−11
12−14
high / 1080p
5−6
6−7
ultra / 1080p
4−5
4−5
4K / 2160p
0−1
1−2
The average gaming FPS of Quadro K620M in The Witcher 3: Wild Hunt is 25% more, than GeForce GT 640.
low / 768p
70−75
70−75
medium / 768p
35−40
35−40
ultra / 1080p
16−18
16−18
high / 768p
30−35
30−35
GeForce GT 640 and Quadro K620M have the same average FPS in World of Tanks.
Full Specs
GeForce GT 640
Quadro K620M
Architecture
Kepler
Maxwell
Code name
GK107
GM108
Type
Desktop
Mobile workstation
Release date
5 June 2012
1 March 2015
Pipelines
384
384
Core clock speed
902 MHz
1029 MHz
Boost Clock
1124 MHz
Transistor count
1,270 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
28.86
17.98
Floating-point performance
692.7 gflops
863.2 gflops
Length
145 mm
Memory bus width
128 Bit
64 Bit
Memory clock speed
1782 MHz
2000 MHz
Memory bandwidth
28.51 GB/s
14.4 GB/s
Shared memory
-
DirectX
12 (11_0)
12
Shader Model
5.1
5
OpenGL
4.6
4.5
OpenCL
1.2
1.2
Vulkan
1.1.126
1.1.126
CUDA
3.0
+
Bitcoin / BTC (SHA256)
24 Mh/s
92 Mh/s
Optimus
+
Display Port
1.2
nView Display Management
+
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