GeForce GT 640 vs UHD Graphics 620
When choosing between GeForce GT 640 and UHD Graphics 620, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 640 and UHD Graphics 620.
UHD Graphics 620 is a Laptop Graphics Card
Note: UHD Graphics 620 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 UHD Graphics 620 here:
Main Specs
GeForce GT 640
UHD Graphics 620
Power consumption (TDP)
65 Watt
15 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x1
Supplementary power connectors
None
Memory type
DDR3
LPDDR3/DDR4
Maximum RAM amount
2 GB
32 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
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GeForce GT 640 has 333% more power consumption, than UHD Graphics 620.
GeForce GT 640 is connected by PCIe 3.0 x16, and UHD Graphics 620 uses PCIe 3.0 x1 interface.
UHD Graphics 620 has 30 GB more memory, than GeForce GT 640.
GeForce GT 640 is used in Desktops, and UHD Graphics 620 - in Laptops.
GeForce GT 640 is build with Kepler architecture, and UHD Graphics 620 - with Gen. 9.5.
Core clock speed of GeForce GT 640 is 602 MHz higher, than UHD Graphics 620.
GeForce GT 640 is manufactured by 28 nm process technology, and UHD Graphics 620 - by 14 nm process technology.
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
2−3
ultra / 1080p
1−2
0−1
QHD / 1440p
0−1
0−1
low / 720p
14−16
12−14
medium / 1080p
5−6
3−4
The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 16% more, than UHD Graphics 620.
high / 1080p
7−8
6−7
ultra / 1080p
5−6
4−5
QHD / 1440p
0−1
0−1
low / 720p
20−22
16−18
medium / 1080p
7−8
6−7
The average gaming FPS of GeForce GT 640 in Battlefield 5 is 25% more, than UHD Graphics 620.
low / 768p
50−55
45−50
high / 1080p
35−40
40−45
QHD / 1440p
0−1
0−1
GeForce GT 640 and UHD Graphics 620 have the same average FPS in Call of Duty: Warzone.
low / 768p
110−120
100−110
medium / 768p
90−95
80−85
ultra / 1080p
45−50
40−45
QHD / 1440p
24−27
21−24
4K / 2160p
18−20
16−18
high / 768p
65−70
60−65
The average gaming FPS of GeForce GT 640 in Counter-Strike: Global Offensive is 10% more, than UHD Graphics 620.
low / 768p
70−75
85−90
ultra / 1080p
21−24
18−20
medium / 1080p
45−50
40−45
The average gaming FPS of UHD Graphics 620 in Cyberpunk 2077 is 4% more, than GeForce GT 640.
low / 768p
70−75
80−85
medium / 768p
50−55
55−60
ultra / 1080p
27−30
27−30
The average gaming FPS of UHD Graphics 620 in Dota 2 is 9% more, than GeForce GT 640.
high / 1080p
3−4
2−3
ultra / 1080p
3−4
2−3
4K / 2160p
2−3
1−2
low / 720p
14−16
12−14
medium / 1080p
4−5
3−4
The average gaming FPS of GeForce GT 640 in Far Cry 5 is 25% more, than UHD Graphics 620.
high / 1080p
10−12
10−11
ultra / 1080p
5−6
5−6
QHD / 1440p
2−3
1−2
low / 720p
50−55
50−55
medium / 1080p
16−18
12−14
The average gaming FPS of GeForce GT 640 in Fortnite is 6% more, than UHD Graphics 620.
high / 1080p
6−7
5−6
QHD / 1440p
4−5
3−4
4K / 2160p
2−3
2−3
low / 720p
21−24
16−18
medium / 1080p
9−10
8−9
The average gaming FPS of GeForce GT 640 in Forza Horizon 4 is 28% more, than UHD Graphics 620.
low / 768p
45−50
40−45
medium / 768p
−
35−40
high / 1080p
7−8
5−6
ultra / 1080p
3−4
3−4
QHD / 1440p
0−1
0−1
medium / 720p
40−45
−
The average gaming FPS of GeForce GT 640 in Grand Theft Auto V is 11% more, than UHD Graphics 620.
high / 1080p
2−3
1−2
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
−
low / 720p
8−9
5−6
medium / 1080p
4−5
3−4
The average gaming FPS of GeForce GT 640 in Metro Exodus is 66% more, than UHD Graphics 620.
low / 768p
80−85
95−100
high / 1080p
−
60−65
ultra / 1080p
70−75
−
medium / 1080p
−
85−90
The average gaming FPS of UHD Graphics 620 in Minecraft is 18% 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 UHD Graphics 620 have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
high / 1080p
6−7
−
ultra / 1080p
4−5
4−5
QHD / 1440p
0−1
0−1
low / 720p
7−8
4−5
The average gaming FPS of GeForce GT 640 in Red Dead Redemption 2 is 50% more, than UHD Graphics 620.
low / 768p
14−16
12−14
medium / 768p
10−11
9−10
high / 1080p
5−6
4−5
ultra / 1080p
4−5
3−4
4K / 2160p
0−1
0−1
The average gaming FPS of GeForce GT 640 in The Witcher 3: Wild Hunt is 14% more, than UHD Graphics 620.
low / 768p
70−75
65−70
medium / 768p
35−40
35−40
ultra / 1080p
16−18
14−16
high / 768p
30−35
27−30
The average gaming FPS of GeForce GT 640 in World of Tanks is 5% more, than UHD Graphics 620.
Full Specs
GeForce GT 640
UHD Graphics 620
Architecture
Kepler
Gen. 9.5
Code name
GK107
Kaby-Lake-Refresh GT2
Type
Desktop
Laptop
Release date
5 June 2012
1 September 2017
Pipelines
384
24
Core clock speed
902 MHz
300 MHz
Boost Clock
1150 MHz
Transistor count
1,270 million
189 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
28.86
27.60
Floating-point performance
692.7 gflops
Length
145 mm
Memory bus width
128 Bit
64/128 Bit
Memory clock speed
1782 MHz
Memory bandwidth
28.51 GB/s
Shared memory
+
DirectX
12 (11_0)
12 (12_1)
Shader Model
5.1
6.4
OpenGL
4.6
4.6
OpenCL
1.2
2.1
Vulkan
1.1.126
1.1.103
CUDA
3.0
Bitcoin / BTC (SHA256)
24 Mh/s
Quick Sync
+
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