Radeon HD 6990 vs Radeon HD 7790
If you are going to buy a new graphics card and are choosing between Radeon HD 6990 and Radeon HD 7790, 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 6990 stacks up against Radeon HD 7790, check out specs charts below.
Main Specs
Radeon HD 6990
Radeon HD 7790
Power consumption (TDP)
375 Watt
85 Watt
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 8-pin
1x 6-pin
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Display Connectors
1x DVI, 4x mini-DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
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Radeon HD 6990 has 341% more power consumption, than Radeon HD 7790.
Radeon HD 6990 is connected by PCIe 2.0 x16, and Radeon HD 7790 uses PCIe 3.0 x16 interface.
Radeon HD 6990 has 1 GB more memory, than Radeon HD 7790.
Both cards are used in Desktops.
Radeon HD 6990 is build with TeraScale 3 architecture, and Radeon HD 7790 - with GCN 2.0.
Core clock speed of Radeon HD 7790 is 170 MHz higher, than Radeon HD 6990.
Radeon HD 6990 is manufactured by 40 nm process technology, and Radeon HD 7790 - by 28 nm process technology.
Radeon HD 6990 is 112 mm longer, than Radeon HD 7790.
Memory clock speed of Radeon HD 7790 is 1000 MHz higher, than Radeon HD 6990.
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
14−16
16−18
ultra / 1080p
9−10
9−10
QHD / 1440p
3−4
4−5
4K / 2160p
−
4−5
low / 720p
30−35
30−35
medium / 1080p
18−20
20−22
The average gaming FPS of Radeon HD 7790 in Assassin's Creed Odyssey is 6% more, than Radeon HD 6990.
high / 1080p
24−27
24−27
ultra / 1080p
21−24
21−24
QHD / 1440p
7−8
8−9
4K / 2160p
5−6
6−7
low / 720p
50−55
50−55
medium / 1080p
27−30
27−30
The average gaming FPS of Radeon HD 7790 in Battlefield 5 is 4% more, than Radeon HD 6990.
low / 768p
45−50
45−50
QHD / 1440p
0−1
0−1
Radeon HD 6990 and Radeon HD 7790 have the same average FPS in Call of Duty: Warzone.
low / 768p
210−220
210−220
medium / 768p
170−180
180−190
ultra / 1080p
95−100
100−110
QHD / 1440p
50−55
55−60
4K / 2160p
30−33
30−35
high / 768p
140−150
140−150
The average gaming FPS of Radeon HD 7790 in Counter-Strike: Global Offensive is 3% more, than Radeon HD 6990.
low / 768p
55−60
55−60
ultra / 1080p
40−45
40−45
medium / 1080p
45−50
45−50
Radeon HD 6990 and Radeon HD 7790 have the same average FPS in Cyberpunk 2077.
low / 768p
110−120
110−120
medium / 768p
90−95
95−100
ultra / 1080p
60−65
65−70
The average gaming FPS of Radeon HD 7790 in Dota 2 is 3% more, than Radeon HD 6990.
high / 1080p
18−20
18−20
ultra / 1080p
16−18
16−18
QHD / 1440p
−
16−18
4K / 2160p
6−7
6−7
low / 720p
35−40
40−45
medium / 1080p
18−20
20−22
The average gaming FPS of Radeon HD 7790 in Far Cry 5 is 10% more, than Radeon HD 6990.
high / 1080p
24−27
24−27
ultra / 1080p
18−20
20−22
QHD / 1440p
16−18
16−18
low / 720p
95−100
100−110
medium / 1080p
50−55
55−60
The average gaming FPS of Radeon HD 7790 in Fortnite is 7% more, than Radeon HD 6990.
high / 1080p
24−27
27−30
ultra / 1080p
20−22
21−24
QHD / 1440p
9−10
10−11
4K / 2160p
−
10−11
low / 720p
50−55
55−60
medium / 1080p
27−30
30−33
The average gaming FPS of Radeon HD 7790 in Forza Horizon 4 is 11% more, than Radeon HD 6990.
low / 768p
85−90
85−90
medium / 768p
75−80
75−80
high / 1080p
30−33
30−35
ultra / 1080p
12−14
12−14
QHD / 1440p
3−4
3−4
Radeon HD 6990 and Radeon HD 7790 have the same average FPS in Grand Theft Auto V.
high / 1080p
9−10
10−11
ultra / 1080p
7−8
8−9
4K / 2160p
2−3
3−4
low / 720p
27−30
30−35
medium / 1080p
12−14
12−14
The average gaming FPS of Radeon HD 7790 in Metro Exodus is 8% more, than Radeon HD 6990.
low / 768p
110−120
110−120
ultra / 1080p
100−110
−
medium / 1080p
100−110
100−110
Radeon HD 6990 and Radeon HD 7790 have the same average FPS in Minecraft.
high / 1080p
21−24
21−24
ultra / 1080p
18−20
18−20
low / 720p
55−60
55−60
medium / 1080p
24−27
24−27
Radeon HD 6990 and Radeon HD 7790 have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
high / 1080p
14−16
14−16
ultra / 1080p
9−10
10−11
QHD / 1440p
0−1
0−1
low / 720p
27−30
30−33
medium / 1080p
16−18
16−18
The average gaming FPS of Radeon HD 7790 in Red Dead Redemption 2 is 5% more, than Radeon HD 6990.
low / 768p
55−60
55−60
medium / 768p
30−35
35−40
high / 1080p
18−20
20−22
ultra / 1080p
10−12
10−12
4K / 2160p
8−9
8−9
The average gaming FPS of Radeon HD 7790 in The Witcher 3: Wild Hunt is 8% more, than Radeon HD 6990.
low / 768p
100−110
100−110
medium / 768p
60−65
60−65
ultra / 1080p
35−40
35−40
high / 768p
50−55
55−60
The average gaming FPS of Radeon HD 7790 in World of Tanks is 1% more, than Radeon HD 6990.
Full Specs
Radeon HD 6990
Radeon HD 7790
Architecture
TeraScale 3
GCN 2.0
Code name
Antilles
Bonaire
Type
Desktop
Desktop
Release date
8 March 2011
22 March 2013
Pipelines
1536
896
Core clock speed
830 MHz
1000 MHz
Transistor count
2,640 million
2,080 million
Manufacturing process technology
40 nm
28 nm
Texture fill rate
79.68
56.00
Floating-point performance
2x 2,549.8 gflops
1,792 gflops
Length
295 mm
183 mm
Memory bus width
256 Bit
128 Bit
Memory clock speed
5000 MHz
6000 MHz
Memory bandwidth
160.0 GB/s
96 GB/s
DirectX
11.2 (11_0)
12 (12_0)
Shader Model
5.0
6.3
OpenGL
4.4
4.6
OpenCL
1.2
2.0
Vulkan
N/A
1.2.131
Bitcoin / BTC (SHA256)
265 Mh/s
218 Mh/s
Ethereum / ETH (DaggerHashimoto)
24 Mh/s
5.2 Mh/s
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