Radeon HD 6790 vs Radeon HD 8790M
If you are going to buy a new graphics card and are choosing between Radeon HD 6790 and Radeon HD 8790M, 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 8790M, check out specs charts below.
Radeon HD 8790M is a Laptop Graphics Card
Note: Radeon HD 8790M is only used in laptop graphics. It has 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 8790M here:
Main Specs
Radeon HD 6790
Radeon HD 8790M
Power consumption (TDP)
150 Watt
Interface
PCIe 2.0 x16
MXM-A (3.0)
Supplementary power connectors
2x 6-pin
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
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Radeon HD 6790 is connected by PCIe 2.0 x16, and Radeon HD 8790M uses MXM-A (3.0) interface.
Radeon HD 8790M has 1 GB more memory, than Radeon HD 6790.
Radeon HD 6790 is used in Desktops, and Radeon HD 8790M - in Laptops.
Radeon HD 6790 is build with Terascale 2 architecture, and Radeon HD 8790M - with GCN.
Core clock speed of Radeon HD 8790M is 10 MHz higher, than Radeon HD 6790.
Radeon HD 6790 is manufactured by 40 nm process technology, and Radeon HD 8790M - by 28 nm process technology.
Memory clock speed of Radeon HD 8790M is 3450 MHz higher, than Radeon HD 6790.
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
7−8
3−4
ultra / 1080p
4−5
1−2
QHD / 1440p
0−1
0−1
low / 720p
18−20
14−16
medium / 1080p
9−10
6−7
The average gaming FPS of Radeon HD 6790 in Assassin's Creed Odyssey is 66% more, than Radeon HD 8790M.
high / 1080p
12−14
8−9
ultra / 1080p
10−12
6−7
QHD / 1440p
0−1
0−1
low / 720p
27−30
21−24
medium / 1080p
14−16
9−10
The average gaming FPS of Radeon HD 6790 in Battlefield 5 is 45% more, than Radeon HD 8790M.
low / 768p
45−50
45−50
high / 1080p
45−50
40−45
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon HD 6790 in Call of Duty: Warzone is 4% more, than Radeon HD 8790M.
low / 768p
140−150
120−130
medium / 768p
120−130
100−110
ultra / 1080p
60−65
50−55
QHD / 1440p
30−35
24−27
4K / 2160p
27−30
−
high / 768p
90−95
75−80
The average gaming FPS of Radeon HD 6790 in Counter-Strike: Global Offensive is 18% more, than Radeon HD 8790M.
low / 768p
55−60
70−75
ultra / 1080p
21−24
21−24
medium / 1080p
45−50
40−45
The average gaming FPS of Radeon HD 8790M in Cyberpunk 2077 is 7% more, than Radeon HD 6790.
low / 768p
85−90
75−80
medium / 768p
65−70
55−60
ultra / 1080p
35−40
30−35
The average gaming FPS of Radeon HD 6790 in Dota 2 is 16% more, than Radeon HD 8790M.
high / 1080p
9−10
4−5
ultra / 1080p
8−9
4−5
4K / 2160p
4−5
1−2
low / 720p
21−24
14−16
medium / 1080p
10−11
6−7
The average gaming FPS of Radeon HD 6790 in Far Cry 5 is 83% more, than Radeon HD 8790M.
high / 1080p
16−18
12−14
ultra / 1080p
10−12
7−8
QHD / 1440p
−
4−5
low / 720p
65−70
60−65
medium / 1080p
27−30
18−20
The average gaming FPS of Radeon HD 6790 in Fortnite is 24% more, than Radeon HD 8790M.
high / 1080p
14−16
8−9
ultra / 1080p
12−14
7−8
QHD / 1440p
2−3
0−1
low / 720p
27−30
21−24
medium / 1080p
16−18
10−11
The average gaming FPS of Radeon HD 6790 in Forza Horizon 4 is 50% more, than Radeon HD 8790M.
low / 768p
55−60
50−55
medium / 768p
50−55
−
high / 1080p
14−16
10−11
ultra / 1080p
7−8
4−5
QHD / 1440p
0−1
0−1
medium / 720p
−
40−45
The average gaming FPS of Radeon HD 6790 in Grand Theft Auto V is 18% more, than Radeon HD 8790M.
high / 1080p
5−6
2−3
ultra / 1080p
4−5
0−1
4K / 2160p
0−1
0−1
low / 720p
14−16
9−10
medium / 1080p
7−8
4−5
The average gaming FPS of Radeon HD 6790 in Metro Exodus is 80% more, than Radeon HD 8790M.
low / 768p
95−100
85−90
high / 1080p
90−95
70−75
ultra / 1080p
85−90
−
medium / 1080p
95−100
−
The average gaming FPS of Radeon HD 6790 in Minecraft is 18% more, than Radeon HD 8790M.
high / 1080p
16−18
−
ultra / 1080p
14−16
12−14
low / 720p
35−40
30−35
medium / 1080p
18−20
14−16
The average gaming FPS of Radeon HD 6790 in PLAYERUNKNOWN'S BATTLEGROUNDS is 15% more, than Radeon HD 8790M.
high / 1080p
−
7−8
ultra / 1080p
8−9
4−5
QHD / 1440p
0−1
0−1
low / 720p
14−16
8−9
medium / 1080p
10−12
8−9
The average gaming FPS of Radeon HD 6790 in Red Dead Redemption 2 is 57% more, than Radeon HD 8790M.
low / 768p
27−30
20−22
medium / 768p
18−20
12−14
high / 1080p
10−11
7−8
ultra / 1080p
7−8
5−6
4K / 2160p
6−7
1−2
The average gaming FPS of Radeon HD 6790 in The Witcher 3: Wild Hunt is 55% more, than Radeon HD 8790M.
low / 768p
85−90
75−80
medium / 768p
45−50
40−45
ultra / 1080p
21−24
18−20
high / 768p
40−45
30−35
The average gaming FPS of Radeon HD 6790 in World of Tanks is 19% more, than Radeon HD 8790M.
Full Specs
Radeon HD 6790
Radeon HD 8790M
Architecture
Terascale 2
GCN
Code name
Barts
Mars XTX
Type
Desktop
Laptop
Release date
4 April 2011
16 November 2012
Pipelines
800
384
Core clock speed
840 MHz
850 MHz
Boost Clock
900 MHz
Transistor count
1,700 million
950 million
Manufacturing process technology
40 nm
28 nm
Texture fill rate
33.60
21.60
Floating-point performance
1,344.0 gflops
691.2 gflops
Length
198 mm
Memory bus width
256 Bit
128 Bit
Memory clock speed
1050 MHz
4500 MHz
Memory bandwidth
134.4 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)
122 Mh/s
80 Mh/s
Laptop size
medium sized
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