GeForce 840M vs Radeon HD 6990M
Find out if it is worth upgrading your current GPU setup by comparing GeForce 840M and Radeon HD 6990M. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce 840M and Radeon HD 6990M. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
GeForce 840M and Radeon HD 6990M are Laptop Graphics Cards
Note: GeForce 840M and Radeon HD 6990M 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 GeForce 840M or Radeon HD 6990M here:
Main Specs
GeForce 840M
Radeon HD 6990M
Power consumption (TDP)
33 Watt
100 Watt
Interface
PCIe 3.0 x8
MXM-B (3.0)
Supplementary power connectors
None
Memory type
DDR3
GDDR5
Maximum RAM amount
4 GB
2 GB
Display Connectors
No outputs
No outputs
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Radeon HD 6990M has 203% more power consumption, than GeForce 840M.
GeForce 840M is connected by PCIe 3.0 x8, and Radeon HD 6990M uses MXM-B (3.0) interface.
GeForce 840M has 2 GB more memory, than Radeon HD 6990M.
Both cards are used in Laptops.
GeForce 840M is build with Maxwell architecture, and Radeon HD 6990M - with Terascale 2.
Core clock speed of GeForce 840M is 314 MHz higher, than Radeon HD 6990M.
GeForce 840M is manufactured by 28 nm process technology, and Radeon HD 6990M - by 40 nm process technology.
Memory clock speed of GeForce 840M is 1100 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
1−2
14−16
ultra / 1080p
0−1
8−9
QHD / 1440p
0−1
3−4
low / 720p
12−14
30−33
medium / 1080p
3−4
16−18
The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 250% more, than GeForce 840M.
high / 1080p
−
21−24
ultra / 1080p
4−5
18−20
QHD / 1440p
0−1
6−7
4K / 2160p
−
5−6
low / 720p
16−18
45−50
medium / 1080p
5−6
24−27
The average gaming FPS of Radeon HD 6990M in Battlefield 5 is 233% more, than GeForce 840M.
low / 768p
45−50
45−50
high / 1080p
40−45
−
QHD / 1440p
0−1
0−1
GeForce 840M and Radeon HD 6990M have the same average FPS in Call of Duty: Warzone.
low / 768p
120−130
200−210
medium / 768p
90−95
170−180
ultra / 1080p
40−45
90−95
QHD / 1440p
24−27
50−55
4K / 2160p
18−20
30−33
high / 768p
65−70
130−140
The average gaming FPS of Radeon HD 6990M in Counter-Strike: Global Offensive is 85% more, than GeForce 840M.
low / 768p
85−90
55−60
ultra / 1080p
16−18
35−40
medium / 1080p
40−45
45−50
The average gaming FPS of GeForce 840M in Cyberpunk 2077 is 4% more, than Radeon HD 6990M.
low / 768p
75−80
100−110
medium / 768p
50−55
90−95
ultra / 1080p
24−27
60−65
The average gaming FPS of Radeon HD 6990M in Dota 2 is 68% more, than GeForce 840M.
high / 1080p
2−3
16−18
ultra / 1080p
2−3
14−16
4K / 2160p
0−1
6−7
low / 720p
12−14
35−40
medium / 1080p
3−4
18−20
The average gaming FPS of Radeon HD 6990M in Far Cry 5 is 340% more, than GeForce 840M.
high / 1080p
10−11
24−27
ultra / 1080p
5−6
18−20
QHD / 1440p
2−3
16−18
low / 720p
50−55
95−100
medium / 1080p
10−12
50−55
The average gaming FPS of Radeon HD 6990M in Fortnite is 162% more, than GeForce 840M.
high / 1080p
4−5
24−27
ultra / 1080p
−
18−20
QHD / 1440p
0−1
8−9
low / 720p
16−18
50−55
medium / 1080p
7−8
27−30
The average gaming FPS of Radeon HD 6990M in Forza Horizon 4 is 288% more, than GeForce 840M.
low / 768p
45−50
80−85
medium / 768p
−
70−75
high / 1080p
5−6
27−30
ultra / 1080p
2−3
10−12
QHD / 1440p
0−1
2−3
medium / 720p
35−40
−
The average gaming FPS of Radeon HD 6990M in Grand Theft Auto V is 122% more, than GeForce 840M.
high / 1080p
1−2
9−10
ultra / 1080p
0−1
7−8
4K / 2160p
0−1
2−3
low / 720p
5−6
27−30
medium / 1080p
3−4
12−14
The average gaming FPS of Radeon HD 6990M in Metro Exodus is 466% more, than GeForce 840M.
low / 768p
90−95
110−120
high / 1080p
85−90
−
ultra / 1080p
70−75
100−110
medium / 1080p
90−95
100−110
The average gaming FPS of Radeon HD 6990M in Minecraft is 27% more, than GeForce 840M.
high / 1080p
−
21−24
ultra / 1080p
12−14
16−18
low / 720p
27−30
55−60
medium / 1080p
14−16
24−27
The average gaming FPS of Radeon HD 6990M in PLAYERUNKNOWN'S BATTLEGROUNDS is 83% more, than GeForce 840M.
high / 1080p
−
14−16
ultra / 1080p
4−5
9−10
QHD / 1440p
0−1
0−1
low / 720p
6−7
27−30
medium / 1080p
−
16−18
The average gaming FPS of Radeon HD 6990M in Red Dead Redemption 2 is 280% more, than GeForce 840M.
low / 768p
12−14
50−55
medium / 768p
9−10
30−35
high / 1080p
4−5
18−20
ultra / 1080p
3−4
10−11
4K / 2160p
0−1
8−9
The average gaming FPS of Radeon HD 6990M in The Witcher 3: Wild Hunt is 300% more, than GeForce 840M.
low / 768p
75−80
100−105
medium / 768p
35−40
60−65
ultra / 1080p
16−18
30−35
high / 768p
30−35
50−55
The average gaming FPS of Radeon HD 6990M in World of Tanks is 51% more, than GeForce 840M.
Full Specs
GeForce 840M
Radeon HD 6990M
Architecture
Maxwell
Terascale 2
Code name
N15S-GT
Blackcomb XTX
Type
Laptop
Laptop
Release date
12 March 2014
12 July 2011
Pipelines
384
1120
Core clock speed
1029 MHz
715 MHz
Boost Clock
1124 MHz
Transistor count
1,700 million
Manufacturing process technology
28 nm
40 nm
Texture fill rate
17.98
40.04
Floating-point performance
863.2 gflops
1,601.6 gflops
Memory bus width
64 Bit
256 Bit
Memory clock speed
2000 MHz
900 MHz
Memory bandwidth
16.02 GB/s
115.2 GB/s
Shared memory
-
-
DirectX
12 (11_0)
11.2 (11_0)
Shader Model
5.1
5.0
OpenGL
4.5
4.4
OpenCL
1.2
1.2
Vulkan
1.1.126
N/A
CUDA
+
Bus support
PCI Express 2.0, PCI Express 3.0
Bitcoin / BTC (SHA256)
92 Mh/s
Laptop size
medium sized
large
Optimus
+
GPU Boost
2.0
GameWorks
+
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