Radeon HD 6990M vs Radeon HD 8790M
When choosing between Radeon HD 6990M and Radeon HD 8790M, 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 Radeon HD 6990M and Radeon HD 8790M.
Radeon HD 6990M and Radeon HD 8790M are Laptop Graphics Cards
Note: Radeon HD 6990M and Radeon HD 8790M are only used in laptop graphics. They have 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 Radeon HD 6990M or Radeon HD 8790M here:
Main Specs
Radeon HD 6990M
Radeon HD 8790M
Power consumption (TDP)
100 Watt
Interface
MXM-B (3.0)
MXM-A (3.0)
Supplementary power connectors
None
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Display Connectors
No outputs
No outputs
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Radeon HD 6990M is connected by MXM-B (3.0), and Radeon HD 8790M uses MXM-A (3.0) interface.
Radeon HD 6990M and Radeon HD 8790M have maximum RAM of 2 GB.
Both cards are used in Laptops.
Radeon HD 6990M is build with Terascale 2 architecture, and Radeon HD 8790M - with GCN.
Core clock speed of Radeon HD 8790M is 135 MHz higher, than Radeon HD 6990M.
Radeon HD 6990M is manufactured by 40 nm process technology, and Radeon HD 8790M - by 28 nm process technology.
Memory clock speed of Radeon HD 8790M is 3600 MHz higher, than Radeon HD 6990M.
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
3−4
ultra / 1080p
8−9
1−2
QHD / 1440p
3−4
0−1
low / 720p
30−33
14−16
medium / 1080p
16−18
6−7
The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 200% more, than Radeon HD 8790M.
high / 1080p
21−24
8−9
ultra / 1080p
18−20
6−7
QHD / 1440p
6−7
0−1
4K / 2160p
5−6
−
low / 720p
45−50
21−24
medium / 1080p
24−27
9−10
The average gaming FPS of Radeon HD 6990M in Battlefield 5 is 154% more, than Radeon HD 8790M.
low / 768p
45−50
45−50
high / 1080p
−
40−45
QHD / 1440p
0−1
0−1
Radeon HD 6990M and Radeon HD 8790M have the same average FPS in Call of Duty: Warzone.
low / 768p
200−210
120−130
medium / 768p
170−180
100−110
ultra / 1080p
90−95
50−55
QHD / 1440p
50−55
24−27
4K / 2160p
30−33
−
high / 768p
130−140
75−80
The average gaming FPS of Radeon HD 6990M in Counter-Strike: Global Offensive is 71% more, than Radeon HD 8790M.
low / 768p
55−60
70−75
ultra / 1080p
35−40
21−24
medium / 1080p
45−50
40−45
The average gaming FPS of Radeon HD 6990M in Cyberpunk 2077 is 4% more, than Radeon HD 8790M.
low / 768p
100−110
75−80
medium / 768p
90−95
55−60
ultra / 1080p
60−65
30−35
The average gaming FPS of Radeon HD 6990M in Dota 2 is 56% more, than Radeon HD 8790M.
high / 1080p
16−18
4−5
ultra / 1080p
14−16
4−5
4K / 2160p
6−7
1−2
low / 720p
35−40
14−16
medium / 1080p
18−20
6−7
The average gaming FPS of Radeon HD 6990M in Far Cry 5 is 216% more, than Radeon HD 8790M.
high / 1080p
24−27
12−14
ultra / 1080p
18−20
7−8
QHD / 1440p
16−18
4−5
low / 720p
95−100
60−65
medium / 1080p
50−55
18−20
The average gaming FPS of Radeon HD 6990M in Fortnite is 100% more, than Radeon HD 8790M.
high / 1080p
24−27
8−9
ultra / 1080p
18−20
7−8
QHD / 1440p
8−9
0−1
low / 720p
50−55
21−24
medium / 1080p
27−30
10−11
The average gaming FPS of Radeon HD 6990M in Forza Horizon 4 is 158% more, than Radeon HD 8790M.
low / 768p
80−85
50−55
medium / 768p
70−75
−
high / 1080p
27−30
10−11
ultra / 1080p
10−12
4−5
QHD / 1440p
2−3
0−1
medium / 720p
−
40−45
The average gaming FPS of Radeon HD 6990M in Grand Theft Auto V is 81% more, than Radeon HD 8790M.
high / 1080p
9−10
2−3
ultra / 1080p
7−8
0−1
4K / 2160p
2−3
0−1
low / 720p
27−30
9−10
medium / 1080p
12−14
4−5
The average gaming FPS of Radeon HD 6990M in Metro Exodus is 240% more, than Radeon HD 8790M.
low / 768p
110−120
85−90
high / 1080p
−
70−75
ultra / 1080p
100−110
−
medium / 1080p
100−110
−
The average gaming FPS of Radeon HD 6990M in Minecraft is 32% more, than Radeon HD 8790M.
high / 1080p
21−24
−
ultra / 1080p
16−18
12−14
low / 720p
55−60
30−35
medium / 1080p
24−27
14−16
The average gaming FPS of Radeon HD 6990M in PLAYERUNKNOWN'S BATTLEGROUNDS is 65% more, than Radeon HD 8790M.
high / 1080p
14−16
7−8
ultra / 1080p
9−10
4−5
QHD / 1440p
0−1
0−1
low / 720p
27−30
8−9
medium / 1080p
16−18
8−9
The average gaming FPS of Radeon HD 6990M in Red Dead Redemption 2 is 142% more, than Radeon HD 8790M.
low / 768p
50−55
20−22
medium / 768p
30−35
12−14
high / 1080p
18−20
7−8
ultra / 1080p
10−11
5−6
4K / 2160p
8−9
1−2
The average gaming FPS of Radeon HD 6990M in The Witcher 3: Wild Hunt is 166% more, than Radeon HD 8790M.
low / 768p
100−105
75−80
medium / 768p
60−65
40−45
ultra / 1080p
30−35
18−20
high / 768p
50−55
30−35
The average gaming FPS of Radeon HD 6990M in World of Tanks is 47% more, than Radeon HD 8790M.
Full Specs
Radeon HD 6990M
Radeon HD 8790M
Architecture
Terascale 2
GCN
Code name
Blackcomb XTX
Mars XTX
Type
Laptop
Laptop
Release date
12 July 2011
16 November 2012
Pipelines
1120
384
Core clock speed
715 MHz
850 MHz
Boost Clock
900 MHz
Transistor count
1,700 million
950 million
Manufacturing process technology
40 nm
28 nm
Texture fill rate
40.04
21.60
Floating-point performance
1,601.6 gflops
691.2 gflops
Memory bus width
256 Bit
128 Bit
Memory clock speed
900 MHz
4500 MHz
Memory bandwidth
115.2 GB/s
64 GB/s
Shared memory
-
-
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)
80 Mh/s
Laptop size
large
medium sized
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