Radeon HD 6850M vs Radeon HD 7990
When choosing between Radeon HD 6850M and Radeon HD 7990, 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 6850M and Radeon HD 7990.
Radeon HD 6850M is a Laptop Graphics Card
Note: Radeon HD 6850M 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 6850M here:
Main Specs
Radeon HD 6850M
Radeon HD 7990
Power consumption (TDP)
50 Watt
375 Watt
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 8-pin
Memory type
DDR3, GDDR5
GDDR5
Maximum RAM amount
1 GB
3 GB
Display Connectors
No outputs
1x DVI, 4x mini-DisplayPort
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Radeon HD 7990 has 650% more power consumption, than Radeon HD 6850M.
Radeon HD 6850M 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 6850M.
Radeon HD 6850M is used in Laptops, and Radeon HD 7990 - in Desktops.
Radeon HD 6850M is build with Terascale 2 architecture, and Radeon HD 7990 - with GCN 1.0.
Core clock speed of Radeon HD 7990 is 375 MHz higher, than Radeon HD 6850M.
Radeon HD 6850M is manufactured by 40 nm process technology, and Radeon HD 7990 - by 28 nm process technology.
Memory clock speed of Radeon HD 7990 is 5200 MHz higher, than Radeon HD 6850M.
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
2−3
35−40
ultra / 1080p
0−1
21−24
QHD / 1440p
0−1
16−18
4K / 2160p
−
10−11
low / 720p
12−14
60−65
medium / 1080p
3−4
40−45
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 683% more, than Radeon HD 6850M.
high / 1080p
−
55−60
ultra / 1080p
4−5
45−50
QHD / 1440p
0−1
35−40
4K / 2160p
−
18−20
low / 720p
14−16
100−110
medium / 1080p
6−7
60−65
The average gaming FPS of Radeon HD 7990 in Battlefield 5 is 787% more, than Radeon HD 6850M.
low / 768p
50−55
50−55
high / 1080p
45−50
−
QHD / 1440p
0−1
0−1
Radeon HD 6850M and Radeon HD 7990 have the same average FPS in Call of Duty: Warzone.
low / 768p
120−130
250−260
medium / 768p
95−100
220−230
ultra / 1080p
40−45
180−190
QHD / 1440p
−
110−120
4K / 2160p
10−11
70−75
high / 768p
65−70
210−220
The average gaming FPS of Radeon HD 7990 in Counter-Strike: Global Offensive is 179% more, than Radeon HD 6850M.
low / 768p
70−75
60−65
ultra / 1080p
16−18
−
medium / 1080p
45−50
55−60
Radeon HD 6850M and Radeon HD 7990 have the same average FPS in Cyberpunk 2077.
low / 768p
75−80
120−130
medium / 768p
45−50
110−120
ultra / 1080p
21−24
100−110
The average gaming FPS of Radeon HD 7990 in Dota 2 is 134% more, than Radeon HD 6850M.
high / 1080p
3−4
45−50
ultra / 1080p
3−4
40−45
QHD / 1440p
−
27−30
4K / 2160p
1−2
14−16
low / 720p
12−14
80−85
medium / 1080p
4−5
45−50
The average gaming FPS of Radeon HD 7990 in Far Cry 5 is 840% more, than Radeon HD 6850M.
high / 1080p
10−12
60−65
ultra / 1080p
6−7
45−50
QHD / 1440p
2−3
27−30
4K / 2160p
−
27−30
low / 720p
50−55
180−190
medium / 1080p
10−12
110−120
The average gaming FPS of Radeon HD 7990 in Fortnite is 443% more, than Radeon HD 6850M.
high / 1080p
4−5
60−65
ultra / 1080p
−
45−50
QHD / 1440p
0−1
30−35
4K / 2160p
−
24−27
low / 720p
18−20
100−110
medium / 1080p
7−8
65−70
The average gaming FPS of Radeon HD 7990 in Forza Horizon 4 is 680% more, than Radeon HD 6850M.
low / 768p
45−50
140−150
medium / 768p
−
120−130
high / 1080p
5−6
70−75
ultra / 1080p
3−4
30−35
QHD / 1440p
0−1
21−24
medium / 720p
35−40
−
The average gaming FPS of Radeon HD 7990 in Grand Theft Auto V is 361% more, than Radeon HD 6850M.
high / 1080p
1−2
24−27
ultra / 1080p
0−1
20−22
QHD / 1440p
−
16−18
4K / 2160p
0−1
8−9
low / 720p
5−6
65−70
medium / 1080p
3−4
30−35
The average gaming FPS of Radeon HD 7990 in Metro Exodus is 1266% more, than Radeon HD 6850M.
low / 768p
90−95
130−140
high / 1080p
60−65
−
medium / 1080p
−
120−130
The average gaming FPS of Radeon HD 7990 in Minecraft is 46% more, than Radeon HD 6850M.
high / 1080p
14−16
−
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 Radeon HD 6850M.
high / 1080p
−
24−27
ultra / 1080p
3−4
16−18
QHD / 1440p
0−1
10−11
4K / 2160p
−
7−8
low / 720p
6−7
65−70
medium / 1080p
−
35−40
The average gaming FPS of Radeon HD 7990 in Red Dead Redemption 2 is 740% more, than Radeon HD 6850M.
low / 768p
10−12
130−140
medium / 768p
8−9
85−90
high / 1080p
4−5
45−50
ultra / 1080p
3−4
24−27
4K / 2160p
0−1
16−18
The average gaming FPS of Radeon HD 7990 in The Witcher 3: Wild Hunt is 1116% more, than Radeon HD 6850M.
low / 768p
75−80
90−95
medium / 768p
40−45
60−65
ultra / 1080p
14−16
50−55
high / 768p
30−35
60−65
The average gaming FPS of Radeon HD 7990 in World of Tanks is 63% more, than Radeon HD 6850M.
Full Specs
Radeon HD 6850M
Radeon HD 7990
Architecture
Terascale 2
GCN 1.0
Code name
Granville Pro/LP
Malta
Type
Laptop
Desktop
Release date
6 January 2011
24 April 2013
Pipelines
800
2048
Core clock speed
575 / 675 MHz
950 MHz
Boost Clock
1000 MHz
Transistor count
1,040 million
4,313 million
Manufacturing process technology
40 nm
28 nm
Texture fill rate
27.00
128.0
Floating-point performance
1,080.0 gflops
2x 4,096 gflops
Length
307 mm
Memory bus width
128 Bit
384 Bit
Memory clock speed
800 MHz
6000 MHz
Memory bandwidth
25.6 GB/s
288.0 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)
459 Mh/s
Laptop size
large
Ethereum / ETH (DaggerHashimoto)
44 Mh/s
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