GeForce 820A vs GeForce GT 640

When choosing between GeForce 820A and GeForce GT 640, 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 820A and GeForce GT 640.

GeForce 820A

GeForce GT 640 Check Price

Main Specs

	GeForce 820A	GeForce GT 640
Power consumption (TDP)	15 Watt	65 Watt
Interface	PCIe 2.0 x16	PCIe 3.0 x16
Supplementary power connectors		None
Memory type	DDR3	DDR3
Maximum RAM amount	1 GB	2 GB
Display Connectors	No outputs	1x DVI, 1x HDMI, 1x DisplayPort
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GeForce GT 640 has 333% more power consumption, than GeForce 820A.
GeForce 820A is connected by PCIe 2.0 x16, and GeForce GT 640 uses PCIe 3.0 x16 interface.
GeForce GT 640 has 1 GB more memory, than GeForce 820A.
Both cards are used in Desktops.
GeForce 820A is build with Fermi 2.0 architecture, and GeForce GT 640 - with Kepler.
Core clock speed of GeForce GT 640 is 127 MHz higher, than GeForce 820A.
GeForce 820A and GeForce GT 640 are manufactured by 28 nm process technology.
Memory clock speed of GeForce 820A is 18 MHz higher, than GeForce GT 640.

Game benchmarks


high / 1080p	0−1	2−3
ultra / 1080p	−	1−2
QHD / 1440p	0−1	0−1
low / 720p	1−2	14−16
medium / 1080p	0−1	5−6
The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 1400% more, than GeForce 820A.
high / 1080p	−	7−8
ultra / 1080p	−	5−6
QHD / 1440p	0−1	0−1
low / 720p	0−1	20−22
medium / 1080p	−	7−8
low / 768p	50−55	50−55
high / 1080p	45−50	35−40
QHD / 1440p	0−1	0−1
The average gaming FPS of GeForce 820A in Call of Duty: Warzone is 11% more, than GeForce GT 640.
low / 768p	60−65	110−120
medium / 768p	27−30	90−95
ultra / 1080p	7−8	45−50
QHD / 1440p	−	24−27
4K / 2160p	−	18−20
high / 768p	16−18	65−70
The average gaming FPS of GeForce GT 640 in Counter-Strike: Global Offensive is 185% more, than GeForce 820A.
low / 768p	70−75	70−75
ultra / 1080p	0−1	21−24
medium / 1080p	45−50	45−50
GeForce 820A and GeForce GT 640 have the same average FPS in Cyberpunk 2077.
low / 768p	45−50	70−75
medium / 768p	10−11	50−55
ultra / 1080p	0−1	27−30
The average gaming FPS of GeForce GT 640 in Dota 2 is 113% more, than GeForce 820A.
high / 1080p	−	3−4
ultra / 1080p	−	3−4
4K / 2160p	−	2−3
low / 720p	0−1	14−16
medium / 1080p	−	4−5
high / 1080p	−	10−12
ultra / 1080p	−	5−6
QHD / 1440p	−	2−3
low / 720p	21−24	50−55
medium / 1080p	0−1	16−18
The average gaming FPS of GeForce GT 640 in Fortnite is 136% more, than GeForce 820A.
high / 1080p	0−1	6−7
QHD / 1440p	0−1	4−5
4K / 2160p	−	2−3
low / 720p	0−1	21−24
medium / 1080p	0−1	9−10
low / 768p	18−20	45−50
high / 1080p	0−1	7−8
ultra / 1080p	−	3−4
QHD / 1440p	0−1	0−1
medium / 720p	12−14	40−45
The average gaming FPS of GeForce GT 640 in Grand Theft Auto V is 181% more, than GeForce 820A.
high / 1080p	−	2−3
ultra / 1080p	−	0−1
4K / 2160p	−	0−1
low / 720p	0−1	8−9
medium / 1080p	−	4−5
low / 768p	75−80	80−85
high / 1080p	27−30	−
ultra / 1080p	−	70−75
The average gaming FPS of GeForce GT 640 in Minecraft is 6% more, than GeForce 820A.
ultra / 1080p	−	12−14
low / 720p	8−9	27−30
medium / 1080p	−	14−16
The average gaming FPS of GeForce GT 640 in PLAYERUNKNOWN'S BATTLEGROUNDS is 250% more, than GeForce 820A.
high / 1080p	−	6−7
ultra / 1080p	−	4−5
QHD / 1440p	−	0−1
low / 720p	0−1	7−8
low / 768p	0−1	14−16
medium / 768p	−	10−11
high / 1080p	−	5−6
ultra / 1080p	−	4−5
4K / 2160p	−	0−1
low / 768p	45−50	70−75
medium / 768p	14−16	35−40
ultra / 1080p	0−1	16−18
high / 768p	12−14	30−35
The average gaming FPS of GeForce GT 640 in World of Tanks is 88% more, than GeForce 820A.

Full Specs

	GeForce 820A	GeForce GT 640
Architecture	Fermi 2.0	Kepler
Code name	GF117	GK107
Type	Desktop	Desktop
Release date	17 March 2014	5 June 2012
Pipelines	96	384
Core clock speed	775 MHz	902 MHz
Transistor count	585 million	1,270 million
Manufacturing process technology	28 nm	28 nm
Texture fill rate	12.40	28.86
Floating-point performance	297.6 gflops	692.7 gflops
Length		145 mm
Memory bus width	64 Bit	128 Bit
Memory clock speed	1800 MHz	1782 MHz
Memory bandwidth	14.4 GB/s	28.51 GB/s
DirectX	12 (11_0)	12 (11_0)
Shader Model	5.1	5.1
OpenGL	4.6	4.6
OpenCL	1.1	1.2
Vulkan	N/A	1.1.126
CUDA	2.1	3.0
Bitcoin / BTC (SHA256)		24 Mh/s
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GeForce 820A vs GeForce GT 640

Main Specs

Game benchmarks

Full Specs

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