Radeon HD 6790 vs Radeon HD 7990

If you are going to buy a new graphics card and are choosing between Radeon HD 6790 and Radeon HD 7990, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Radeon HD 6790 stacks up against Radeon HD 7990, check out specs charts below.

Radeon HD 6790 Check Price

Radeon HD 7990 Check Price

Main Specs

	Radeon HD 6790	Radeon HD 7990
Power consumption (TDP)	150 Watt	375 Watt
Interface	PCIe 2.0 x16	PCIe 3.0 x16
Supplementary power connectors	2x 6-pin	2x 8-pin
Memory type	GDDR5	GDDR5
Maximum RAM amount	1 GB	3 GB
Display Connectors	2x DVI, 1x HDMI, 1x DisplayPort	1x DVI, 4x mini-DisplayPort
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Radeon HD 7990 has 150% more power consumption, than Radeon HD 6790.
Radeon HD 6790 is connected by PCIe 2.0 x16, and Radeon HD 7990 uses PCIe 3.0 x16 interface.
Radeon HD 7990 has 2 GB more memory, than Radeon HD 6790.
Both cards are used in Desktops.
Radeon HD 6790 is build with Terascale 2 architecture, and Radeon HD 7990 - with GCN 1.0.
Core clock speed of Radeon HD 7990 is 110 MHz higher, than Radeon HD 6790.
Radeon HD 6790 is manufactured by 40 nm process technology, and Radeon HD 7990 - by 28 nm process technology.
Radeon HD 7990 is 109 mm longer, than Radeon HD 6790.
Memory clock speed of Radeon HD 7990 is 4950 MHz higher, than Radeon HD 6790.

Game benchmarks


high / 1080p	7−8	35−40
ultra / 1080p	4−5	21−24
QHD / 1440p	0−1	16−18
4K / 2160p	−	10−11
low / 720p	18−20	60−65
medium / 1080p	9−10	40−45
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 310% more, than Radeon HD 6790.
high / 1080p	12−14	55−60
ultra / 1080p	10−12	45−50
QHD / 1440p	0−1	35−40
4K / 2160p	−	18−20
low / 720p	27−30	100−110
medium / 1080p	14−16	60−65
The average gaming FPS of Radeon HD 7990 in Battlefield 5 is 325% more, than Radeon HD 6790.
low / 768p	45−50	50−55
high / 1080p	45−50	−
QHD / 1440p	0−1	0−1
The average gaming FPS of Radeon HD 7990 in Call of Duty: Warzone is 10% more, than Radeon HD 6790.
low / 768p	140−150	250−260
medium / 768p	120−130	220−230
ultra / 1080p	60−65	180−190
QHD / 1440p	30−35	110−120
4K / 2160p	27−30	70−75
high / 768p	90−95	210−220
The average gaming FPS of Radeon HD 7990 in Counter-Strike: Global Offensive is 118% more, than Radeon HD 6790.
low / 768p	55−60	60−65
ultra / 1080p	21−24	−
medium / 1080p	45−50	55−60
The average gaming FPS of Radeon HD 7990 in Cyberpunk 2077 is 15% more, than Radeon HD 6790.
low / 768p	85−90	120−130
medium / 768p	65−70	110−120
ultra / 1080p	35−40	100−110
The average gaming FPS of Radeon HD 7990 in Dota 2 is 79% more, than Radeon HD 6790.
high / 1080p	9−10	45−50
ultra / 1080p	8−9	40−45
QHD / 1440p	−	27−30
4K / 2160p	4−5	14−16
low / 720p	21−24	80−85
medium / 1080p	10−11	45−50
The average gaming FPS of Radeon HD 7990 in Far Cry 5 is 327% more, than Radeon HD 6790.
high / 1080p	16−18	60−65
ultra / 1080p	10−12	45−50
QHD / 1440p	−	27−30
4K / 2160p	−	27−30
low / 720p	65−70	180−190
medium / 1080p	27−30	110−120
The average gaming FPS of Radeon HD 7990 in Fortnite is 229% more, than Radeon HD 6790.
high / 1080p	14−16	60−65
ultra / 1080p	12−14	45−50
QHD / 1440p	2−3	30−35
4K / 2160p	−	24−27
low / 720p	27−30	100−110
medium / 1080p	16−18	65−70
The average gaming FPS of Radeon HD 7990 in Forza Horizon 4 is 320% more, than Radeon HD 6790.
low / 768p	55−60	140−150
medium / 768p	50−55	120−130
high / 1080p	14−16	70−75
ultra / 1080p	7−8	30−35
QHD / 1440p	0−1	21−24
The average gaming FPS of Radeon HD 7990 in Grand Theft Auto V is 181% more, than Radeon HD 6790.
high / 1080p	5−6	24−27
ultra / 1080p	4−5	20−22
QHD / 1440p	−	16−18
4K / 2160p	0−1	8−9
low / 720p	14−16	65−70
medium / 1080p	7−8	30−35
The average gaming FPS of Radeon HD 7990 in Metro Exodus is 350% more, than Radeon HD 6790.
low / 768p	95−100	130−140
high / 1080p	90−95	−
ultra / 1080p	85−90	−
medium / 1080p	95−100	120−130
The average gaming FPS of Radeon HD 7990 in Minecraft is 34% more, than Radeon HD 6790.
high / 1080p	16−18	−
ultra / 1080p	14−16	14−16
low / 720p	35−40	100−110
medium / 1080p	18−20	18−20
The average gaming FPS of Radeon HD 7990 in PLAYERUNKNOWN'S BATTLEGROUNDS is 100% more, than Radeon HD 6790.
high / 1080p	−	24−27
ultra / 1080p	8−9	16−18
QHD / 1440p	0−1	10−11
4K / 2160p	−	7−8
low / 720p	14−16	65−70
medium / 1080p	10−12	35−40
The average gaming FPS of Radeon HD 7990 in Red Dead Redemption 2 is 263% more, than Radeon HD 6790.
low / 768p	27−30	130−140
medium / 768p	18−20	85−90
high / 1080p	10−11	45−50
ultra / 1080p	7−8	24−27
4K / 2160p	6−7	16−18
The average gaming FPS of Radeon HD 7990 in The Witcher 3: Wild Hunt is 342% more, than Radeon HD 6790.
low / 768p	85−90	90−95
medium / 768p	45−50	60−65
ultra / 1080p	21−24	50−55
high / 768p	40−45	60−65
The average gaming FPS of Radeon HD 7990 in World of Tanks is 34% more, than Radeon HD 6790.

Full Specs

	Radeon HD 6790	Radeon HD 7990
Architecture	Terascale 2	GCN 1.0
Code name	Barts	Malta
Type	Desktop	Desktop
Release date	4 April 2011	24 April 2013
Pipelines	800	2048
Core clock speed	840 MHz	950 MHz
Boost Clock		1000 MHz
Transistor count	1,700 million	4,313 million
Manufacturing process technology	40 nm	28 nm
Texture fill rate	33.60	128.0
Floating-point performance	1,344.0 gflops	2x 4,096 gflops
Length	198 mm	307 mm
Memory bus width	256 Bit	384 Bit
Memory clock speed	1050 MHz	6000 MHz
Memory bandwidth	134.4 GB/s	288.0 GB/s
DirectX	11.2 (11_0)	12 (11_1)
Shader Model	5.0	5.1
OpenGL	4.4	4.6
OpenCL	1.2	1.2
Vulkan	N/A	1.2.131
Bitcoin / BTC (SHA256)	122 Mh/s	459 Mh/s
Ethereum / ETH (DaggerHashimoto)		44 Mh/s
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Radeon HD 6790 vs Radeon HD 7990

Main Specs

Game benchmarks

Full Specs

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