GeForce 840M vs Radeon HD 7790
In this comparison between GeForce 840M and Radeon HD 7790 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce 840M will be the best choice, for others Radeon HD 7790 will be their preference. Study the comparison tables below and make your choice.
GeForce 840M is a Laptop Graphics Card
Note: GeForce 840M 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 GeForce 840M here:
Main Specs
GeForce 840M
Radeon HD 7790
Power consumption (TDP)
33 Watt
85 Watt
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
Memory type
DDR3
GDDR5
Maximum RAM amount
4 GB
1 GB
Display Connectors
No outputs
1x DVI, 1x HDMI, 2x mini-DisplayPort
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Radeon HD 7790 has 157% more power consumption, than GeForce 840M.
GeForce 840M is connected by PCIe 3.0 x8, and Radeon HD 7790 uses PCIe 3.0 x16 interface.
GeForce 840M has 3 GB more memory, than Radeon HD 7790.
GeForce 840M is used in Laptops, and Radeon HD 7790 - in Desktops.
GeForce 840M is build with Maxwell architecture, and Radeon HD 7790 - with GCN 2.0.
Core clock speed of GeForce 840M is 29 MHz higher, than Radeon HD 7790.
GeForce 840M and Radeon HD 7790 are manufactured by 28 nm process technology.
Memory clock speed of Radeon HD 7790 is 4000 MHz higher, than GeForce 840M.
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
16−18
ultra / 1080p
0−1
9−10
QHD / 1440p
0−1
4−5
4K / 2160p
−
4−5
low / 720p
12−14
30−35
medium / 1080p
3−4
20−22
The average gaming FPS of Radeon HD 7790 in Assassin's Creed Odyssey is 283% more, than GeForce 840M.
high / 1080p
−
24−27
ultra / 1080p
4−5
21−24
QHD / 1440p
0−1
8−9
4K / 2160p
−
6−7
low / 720p
16−18
50−55
medium / 1080p
5−6
27−30
The average gaming FPS of Radeon HD 7790 in Battlefield 5 is 277% 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 7790 have the same average FPS in Call of Duty: Warzone.
low / 768p
120−130
210−220
medium / 768p
90−95
180−190
ultra / 1080p
40−45
100−110
QHD / 1440p
24−27
55−60
4K / 2160p
18−20
30−35
high / 768p
65−70
140−150
The average gaming FPS of Radeon HD 7790 in Counter-Strike: Global Offensive is 98% more, than GeForce 840M.
low / 768p
85−90
55−60
ultra / 1080p
16−18
40−45
medium / 1080p
40−45
45−50
GeForce 840M and Radeon HD 7790 have the same average FPS in Cyberpunk 2077.
low / 768p
75−80
110−120
medium / 768p
50−55
95−100
ultra / 1080p
24−27
65−70
The average gaming FPS of Radeon HD 7790 in Dota 2 is 82% more, than GeForce 840M.
high / 1080p
2−3
18−20
ultra / 1080p
2−3
16−18
QHD / 1440p
−
16−18
4K / 2160p
0−1
6−7
low / 720p
12−14
40−45
medium / 1080p
3−4
20−22
The average gaming FPS of Radeon HD 7790 in Far Cry 5 is 380% more, than GeForce 840M.
high / 1080p
10−11
24−27
ultra / 1080p
5−6
20−22
QHD / 1440p
2−3
16−18
low / 720p
50−55
100−110
medium / 1080p
10−12
55−60
The average gaming FPS of Radeon HD 7790 in Fortnite is 181% more, than GeForce 840M.
high / 1080p
4−5
27−30
ultra / 1080p
−
21−24
QHD / 1440p
0−1
10−11
4K / 2160p
−
10−11
low / 720p
16−18
55−60
medium / 1080p
7−8
30−33
The average gaming FPS of Radeon HD 7790 in Forza Horizon 4 is 333% more, than GeForce 840M.
low / 768p
45−50
85−90
medium / 768p
−
75−80
high / 1080p
5−6
30−35
ultra / 1080p
2−3
12−14
QHD / 1440p
0−1
3−4
medium / 720p
35−40
−
The average gaming FPS of Radeon HD 7790 in Grand Theft Auto V is 144% more, than GeForce 840M.
high / 1080p
1−2
10−11
ultra / 1080p
0−1
8−9
4K / 2160p
0−1
3−4
low / 720p
5−6
30−35
medium / 1080p
3−4
12−14
The average gaming FPS of Radeon HD 7790 in Metro Exodus is 500% more, than GeForce 840M.
low / 768p
90−95
110−120
high / 1080p
85−90
−
ultra / 1080p
70−75
−
medium / 1080p
90−95
100−110
The average gaming FPS of Radeon HD 7790 in Minecraft is 19% more, than GeForce 840M.
high / 1080p
−
21−24
ultra / 1080p
12−14
18−20
low / 720p
27−30
55−60
medium / 1080p
14−16
24−27
The average gaming FPS of Radeon HD 7790 in PLAYERUNKNOWN'S BATTLEGROUNDS is 88% more, than GeForce 840M.
high / 1080p
−
14−16
ultra / 1080p
4−5
10−11
QHD / 1440p
0−1
0−1
low / 720p
6−7
30−33
medium / 1080p
−
16−18
The average gaming FPS of Radeon HD 7790 in Red Dead Redemption 2 is 320% more, than GeForce 840M.
low / 768p
12−14
55−60
medium / 768p
9−10
35−40
high / 1080p
4−5
20−22
ultra / 1080p
3−4
10−12
4K / 2160p
0−1
8−9
The average gaming FPS of Radeon HD 7790 in The Witcher 3: Wild Hunt is 342% more, than GeForce 840M.
low / 768p
75−80
100−110
medium / 768p
35−40
60−65
ultra / 1080p
16−18
35−40
high / 768p
30−35
55−60
The average gaming FPS of Radeon HD 7790 in World of Tanks is 58% more, than GeForce 840M.
Full Specs
GeForce 840M
Radeon HD 7790
Architecture
Maxwell
GCN 2.0
Code name
N15S-GT
Bonaire
Type
Laptop
Desktop
Release date
12 March 2014
22 March 2013
Pipelines
384
896
Core clock speed
1029 MHz
1000 MHz
Boost Clock
1124 MHz
Transistor count
2,080 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
17.98
56.00
Floating-point performance
863.2 gflops
1,792 gflops
Length
183 mm
Memory bus width
64 Bit
128 Bit
Memory clock speed
2000 MHz
6000 MHz
Memory bandwidth
16.02 GB/s
96 GB/s
Shared memory
-
DirectX
12 (11_0)
12 (12_0)
Shader Model
5.1
6.3
OpenGL
4.5
4.6
OpenCL
1.2
2.0
Vulkan
1.1.126
1.2.131
CUDA
+
Bus support
PCI Express 2.0, PCI Express 3.0
Bitcoin / BTC (SHA256)
92 Mh/s
218 Mh/s
Laptop size
medium sized
Optimus
+
Ethereum / ETH (DaggerHashimoto)
5.2 Mh/s
GPU Boost
2.0
GameWorks
+
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