GeForce 840M vs Radeon HD 6790
If you are going to buy a new graphics card and are choosing between GeForce 840M and Radeon HD 6790, 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 GeForce 840M stacks up against Radeon HD 6790, check out specs charts below.
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 6790
Power consumption (TDP)
33 Watt
150 Watt
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
Memory type
DDR3
GDDR5
Maximum RAM amount
4 GB
1 GB
Display Connectors
No outputs
2x DVI, 1x HDMI, 1x DisplayPort
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Radeon HD 6790 has 354% more power consumption, than GeForce 840M.
GeForce 840M is connected by PCIe 3.0 x8, and Radeon HD 6790 uses PCIe 2.0 x16 interface.
GeForce 840M has 3 GB more memory, than Radeon HD 6790.
GeForce 840M is used in Laptops, and Radeon HD 6790 - in Desktops.
GeForce 840M is build with Maxwell architecture, and Radeon HD 6790 - with Terascale 2.
Core clock speed of GeForce 840M is 189 MHz higher, than Radeon HD 6790.
GeForce 840M is manufactured by 28 nm process technology, and Radeon HD 6790 - by 40 nm process technology.
Memory clock speed of GeForce 840M is 950 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
1−2
7−8
ultra / 1080p
0−1
4−5
QHD / 1440p
0−1
0−1
low / 720p
12−14
18−20
medium / 1080p
3−4
9−10
The average gaming FPS of Radeon HD 6790 in Assassin's Creed Odyssey is 100% more, than GeForce 840M.
high / 1080p
−
12−14
ultra / 1080p
4−5
10−12
QHD / 1440p
0−1
0−1
low / 720p
16−18
27−30
medium / 1080p
5−6
14−16
The average gaming FPS of Radeon HD 6790 in Battlefield 5 is 100% more, than GeForce 840M.
low / 768p
45−50
45−50
high / 1080p
40−45
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon HD 6790 in Call of Duty: Warzone is 4% more, than GeForce 840M.
low / 768p
120−130
140−150
medium / 768p
90−95
120−130
ultra / 1080p
40−45
60−65
QHD / 1440p
24−27
30−35
4K / 2160p
18−20
27−30
high / 768p
65−70
90−95
The average gaming FPS of Radeon HD 6790 in Counter-Strike: Global Offensive is 30% more, than GeForce 840M.
low / 768p
85−90
55−60
ultra / 1080p
16−18
21−24
medium / 1080p
40−45
45−50
The average gaming FPS of GeForce 840M in Cyberpunk 2077 is 16% more, than Radeon HD 6790.
low / 768p
75−80
85−90
medium / 768p
50−55
65−70
ultra / 1080p
24−27
35−40
The average gaming FPS of Radeon HD 6790 in Dota 2 is 25% more, than GeForce 840M.
high / 1080p
2−3
9−10
ultra / 1080p
2−3
8−9
4K / 2160p
0−1
4−5
low / 720p
12−14
21−24
medium / 1080p
3−4
10−11
The average gaming FPS of Radeon HD 6790 in Far Cry 5 is 140% more, than GeForce 840M.
high / 1080p
10−11
16−18
ultra / 1080p
5−6
10−12
QHD / 1440p
2−3
−
low / 720p
50−55
65−70
medium / 1080p
10−12
27−30
The average gaming FPS of Radeon HD 6790 in Fortnite is 63% more, than GeForce 840M.
high / 1080p
4−5
14−16
ultra / 1080p
−
12−14
QHD / 1440p
0−1
2−3
low / 720p
16−18
27−30
medium / 1080p
7−8
16−18
The average gaming FPS of Radeon HD 6790 in Forza Horizon 4 is 122% more, than GeForce 840M.
low / 768p
45−50
55−60
medium / 768p
−
50−55
high / 1080p
5−6
14−16
ultra / 1080p
2−3
7−8
QHD / 1440p
0−1
0−1
medium / 720p
35−40
−
The average gaming FPS of Radeon HD 6790 in Grand Theft Auto V is 44% more, than GeForce 840M.
high / 1080p
1−2
5−6
ultra / 1080p
0−1
4−5
4K / 2160p
0−1
0−1
low / 720p
5−6
14−16
medium / 1080p
3−4
7−8
The average gaming FPS of Radeon HD 6790 in Metro Exodus is 200% more, than GeForce 840M.
low / 768p
90−95
95−100
high / 1080p
85−90
90−95
ultra / 1080p
70−75
85−90
medium / 1080p
90−95
95−100
The average gaming FPS of Radeon HD 6790 in Minecraft is 8% more, than GeForce 840M.
high / 1080p
−
16−18
ultra / 1080p
12−14
14−16
low / 720p
27−30
35−40
medium / 1080p
14−16
18−20
The average gaming FPS of Radeon HD 6790 in PLAYERUNKNOWN'S BATTLEGROUNDS is 27% more, than GeForce 840M.
ultra / 1080p
4−5
8−9
QHD / 1440p
0−1
0−1
low / 720p
6−7
14−16
medium / 1080p
−
10−12
The average gaming FPS of Radeon HD 6790 in Red Dead Redemption 2 is 120% more, than GeForce 840M.
low / 768p
12−14
27−30
medium / 768p
9−10
18−20
high / 1080p
4−5
10−11
ultra / 1080p
3−4
7−8
4K / 2160p
0−1
6−7
The average gaming FPS of Radeon HD 6790 in The Witcher 3: Wild Hunt is 128% more, than GeForce 840M.
low / 768p
75−80
85−90
medium / 768p
35−40
45−50
ultra / 1080p
16−18
21−24
high / 768p
30−35
40−45
The average gaming FPS of Radeon HD 6790 in World of Tanks is 21% more, than GeForce 840M.
Full Specs
GeForce 840M
Radeon HD 6790
Architecture
Maxwell
Terascale 2
Code name
N15S-GT
Barts
Type
Laptop
Desktop
Release date
12 March 2014
4 April 2011
Pipelines
384
800
Core clock speed
1029 MHz
840 MHz
Boost Clock
1124 MHz
Transistor count
1,700 million
Manufacturing process technology
28 nm
40 nm
Texture fill rate
17.98
33.60
Floating-point performance
863.2 gflops
1,344.0 gflops
Length
198 mm
Memory bus width
64 Bit
256 Bit
Memory clock speed
2000 MHz
1050 MHz
Memory bandwidth
16.02 GB/s
134.4 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
122 Mh/s
Laptop size
medium sized
Optimus
+
GPU Boost
2.0
GameWorks
+
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