GeForce 840A vs Radeon HD 7990

When comparing GeForce 840A and Radeon HD 7990, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce 840A and Radeon HD 7990 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

GeForce 840A

Radeon HD 7990 Check Price

Main Specs

	GeForce 840A	Radeon HD 7990
Power consumption (TDP)	33 Watt	375 Watt
Interface	PCIe 3.0 x8	PCIe 3.0 x16
Supplementary power connectors		2x 8-pin
Memory type	DDR3	GDDR5
Maximum RAM amount	2 GB	3 GB
Display Connectors	No outputs	1x DVI, 4x mini-DisplayPort
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Radeon HD 7990 has 1036% more power consumption, than GeForce 840A.
GeForce 840A is connected by PCIe 3.0 x8, and Radeon HD 7990 uses PCIe 3.0 x16 interface.
Radeon HD 7990 has 1 GB more memory, than GeForce 840A.
Both cards are used in Desktops.
GeForce 840A is build with Maxwell architecture, and Radeon HD 7990 - with GCN 1.0.
Core clock speed of GeForce 840A is 79 MHz higher, than Radeon HD 7990.
GeForce 840A and Radeon HD 7990 are manufactured by 28 nm process technology.
Memory clock speed of Radeon HD 7990 is 3998 MHz higher, than GeForce 840A.

Game benchmarks


high / 1080p	3−4	35−40
ultra / 1080p	2−3	21−24
QHD / 1440p	0−1	16−18
4K / 2160p	−	10−11
low / 720p	14−16	60−65
medium / 1080p	5−6	40−45
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 583% more, than GeForce 840A.
high / 1080p	−	55−60
ultra / 1080p	7−8	45−50
QHD / 1440p	0−1	35−40
4K / 2160p	−	18−20
low / 720p	18−20	100−110
medium / 1080p	8−9	60−65
The average gaming FPS of Radeon HD 7990 in Battlefield 5 is 545% more, than GeForce 840A.
low / 768p	45−50	50−55
high / 1080p	30−35	−
QHD / 1440p	0−1	0−1
The average gaming FPS of Radeon HD 7990 in Call of Duty: Warzone is 10% more, than GeForce 840A.
low / 768p	120−130	250−260
medium / 768p	90−95	220−230
ultra / 1080p	40−45	180−190
QHD / 1440p	24−27	110−120
4K / 2160p	18−20	70−75
high / 768p	65−70	210−220
The average gaming FPS of Radeon HD 7990 in Counter-Strike: Global Offensive is 185% more, than GeForce 840A.
low / 768p	80−85	60−65
ultra / 1080p	14−16	−
medium / 1080p	40−45	55−60
The average gaming FPS of GeForce 840A in Cyberpunk 2077 is 3% more, than Radeon HD 7990.
low / 768p	75−80	120−130
medium / 768p	50−55	110−120
ultra / 1080p	27−30	100−110
The average gaming FPS of Radeon HD 7990 in Dota 2 is 121% more, than GeForce 840A.
high / 1080p	5−6	45−50
ultra / 1080p	−	40−45
QHD / 1440p	−	27−30
4K / 2160p	2−3	14−16
low / 720p	14−16	80−85
medium / 1080p	6−7	45−50
The average gaming FPS of Radeon HD 7990 in Far Cry 5 is 585% more, than GeForce 840A.
high / 1080p	12−14	60−65
ultra / 1080p	7−8	45−50
QHD / 1440p	−	27−30
4K / 2160p	−	27−30
low / 720p	50−55	180−190
medium / 1080p	14−16	110−120
The average gaming FPS of Radeon HD 7990 in Fortnite is 363% more, than GeForce 840A.
high / 1080p	7−8	60−65
ultra / 1080p	−	45−50
QHD / 1440p	0−1	30−35
4K / 2160p	−	24−27
low / 720p	20−22	100−110
medium / 1080p	9−10	65−70
The average gaming FPS of Radeon HD 7990 in Forza Horizon 4 is 550% more, than GeForce 840A.
low / 768p	45−50	140−150
medium / 768p	−	120−130
high / 1080p	8−9	70−75
ultra / 1080p	5−6	30−35
QHD / 1440p	0−1	21−24
medium / 720p	40−45	−
The average gaming FPS of Radeon HD 7990 in Grand Theft Auto V is 315% more, than GeForce 840A.
high / 1080p	3−4	24−27
ultra / 1080p	1−2	20−22
QHD / 1440p	−	16−18
4K / 2160p	0−1	8−9
low / 720p	8−9	65−70
medium / 1080p	4−5	30−35
The average gaming FPS of Radeon HD 7990 in Metro Exodus is 800% more, than GeForce 840A.
low / 768p	85−90	130−140
high / 1080p	85−90	−
ultra / 1080p	80−85	−
medium / 1080p	85−90	120−130
The average gaming FPS of Radeon HD 7990 in Minecraft is 49% more, than GeForce 840A.
ultra / 1080p	12−14	14−16
low / 720p	27−30	100−110
medium / 1080p	14−16	18−20
The average gaming FPS of Radeon HD 7990 in PLAYERUNKNOWN'S BATTLEGROUNDS is 155% more, than GeForce 840A.
high / 1080p	−	24−27
ultra / 1080p	7−8	16−18
QHD / 1440p	0−1	10−11
4K / 2160p	−	7−8
low / 720p	8−9	65−70
medium / 1080p	−	35−40
The average gaming FPS of Radeon HD 7990 in Red Dead Redemption 2 is 425% more, than GeForce 840A.
low / 768p	16−18	130−140
medium / 768p	12−14	85−90
high / 1080p	6−7	45−50
ultra / 1080p	5−6	24−27
4K / 2160p	−	16−18
The average gaming FPS of Radeon HD 7990 in The Witcher 3: Wild Hunt is 630% more, than GeForce 840A.
low / 768p	70−75	90−95
medium / 768p	35−40	60−65
ultra / 1080p	16−18	50−55
high / 768p	30−35	60−65
The average gaming FPS of Radeon HD 7990 in World of Tanks is 71% more, than GeForce 840A.

Full Specs

	GeForce 840A	Radeon HD 7990
Architecture	Maxwell	GCN 1.0
Code name	GM108	Malta
Type	Desktop	Desktop
Release date	17 March 2014	24 April 2013
Pipelines	384	2048
Core clock speed	1029 MHz	950 MHz
Boost Clock	1124 MHz	1000 MHz
Transistor count		4,313 million
Manufacturing process technology	28 nm	28 nm
Texture fill rate	17.98	128.0
Floating-point performance	863.2 gflops	2x 4,096 gflops
Length		307 mm
Memory bus width	64 Bit	384 Bit
Memory clock speed	2002 MHz	6000 MHz
Memory bandwidth	16.02 GB/s	288.0 GB/s
DirectX	12 (11_0)	12 (11_1)
Shader Model	5.1	5.1
OpenGL	4.6	4.6
OpenCL	1.2	1.2
Vulkan	1.1.126	1.2.131
CUDA	5.0
Bitcoin / BTC (SHA256)		459 Mh/s
Ethereum / ETH (DaggerHashimoto)		44 Mh/s
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GeForce 840A vs Radeon HD 7990

Main Specs

Game benchmarks

Full Specs

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