GeForce 840M vs Radeon HD 8790M
If you are going to buy a new graphics card and are choosing between GeForce 840M 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 GeForce 840M stacks up against Radeon HD 8790M, check out specs charts below.
GeForce 840M and Radeon HD 8790M are Laptop Graphics Cards
Note: GeForce 840M and Radeon HD 8790M 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 8790M here:
Main Specs
GeForce 840M
Radeon HD 8790M
Power consumption (TDP)
33 Watt
Interface
PCIe 3.0 x8
MXM-A (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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GeForce 840M is connected by PCIe 3.0 x8, and Radeon HD 8790M uses MXM-A (3.0) interface.
GeForce 840M has 2 GB more memory, than Radeon HD 8790M.
Both cards are used in Laptops.
GeForce 840M is build with Maxwell architecture, and Radeon HD 8790M - with GCN.
Core clock speed of GeForce 840M is 179 MHz higher, than Radeon HD 8790M.
GeForce 840M and Radeon HD 8790M are manufactured by 28 nm process technology.
Memory clock speed of Radeon HD 8790M is 2500 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
3−4
ultra / 1080p
0−1
1−2
QHD / 1440p
0−1
0−1
low / 720p
12−14
14−16
medium / 1080p
3−4
6−7
The average gaming FPS of Radeon HD 8790M in Assassin's Creed Odyssey is 33% more, than GeForce 840M.
high / 1080p
−
8−9
ultra / 1080p
4−5
6−7
QHD / 1440p
0−1
0−1
low / 720p
16−18
21−24
medium / 1080p
5−6
9−10
The average gaming FPS of Radeon HD 8790M in Battlefield 5 is 33% more, than GeForce 840M.
low / 768p
45−50
45−50
high / 1080p
40−45
40−45
QHD / 1440p
0−1
0−1
GeForce 840M and Radeon HD 8790M have the same average FPS in Call of Duty: Warzone.
low / 768p
120−130
120−130
medium / 768p
90−95
100−110
ultra / 1080p
40−45
50−55
QHD / 1440p
24−27
24−27
4K / 2160p
18−20
−
high / 768p
65−70
75−80
The average gaming FPS of Radeon HD 8790M in Counter-Strike: Global Offensive is 10% more, than GeForce 840M.
low / 768p
85−90
70−75
ultra / 1080p
16−18
21−24
medium / 1080p
40−45
40−45
The average gaming FPS of GeForce 840M in Cyberpunk 2077 is 8% more, than Radeon HD 8790M.
low / 768p
75−80
75−80
medium / 768p
50−55
55−60
ultra / 1080p
24−27
30−35
The average gaming FPS of Radeon HD 8790M in Dota 2 is 7% more, than GeForce 840M.
high / 1080p
2−3
4−5
ultra / 1080p
2−3
4−5
4K / 2160p
0−1
1−2
low / 720p
12−14
14−16
medium / 1080p
3−4
6−7
The average gaming FPS of Radeon HD 8790M in Far Cry 5 is 40% more, than GeForce 840M.
high / 1080p
10−11
12−14
ultra / 1080p
5−6
7−8
QHD / 1440p
2−3
4−5
low / 720p
50−55
60−65
medium / 1080p
10−12
18−20
The average gaming FPS of Radeon HD 8790M in Fortnite is 31% more, than GeForce 840M.
high / 1080p
4−5
8−9
ultra / 1080p
−
7−8
QHD / 1440p
0−1
0−1
low / 720p
16−18
21−24
medium / 1080p
7−8
10−11
The average gaming FPS of Radeon HD 8790M in Forza Horizon 4 is 44% more, than GeForce 840M.
low / 768p
45−50
50−55
high / 1080p
5−6
10−11
ultra / 1080p
2−3
4−5
QHD / 1440p
0−1
0−1
medium / 720p
35−40
40−45
The average gaming FPS of Radeon HD 8790M in Grand Theft Auto V is 17% more, than GeForce 840M.
high / 1080p
1−2
2−3
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
0−1
low / 720p
5−6
9−10
medium / 1080p
3−4
4−5
The average gaming FPS of Radeon HD 8790M in Metro Exodus is 66% more, than GeForce 840M.
low / 768p
90−95
85−90
high / 1080p
85−90
70−75
ultra / 1080p
70−75
−
medium / 1080p
90−95
−
The average gaming FPS of GeForce 840M in Minecraft is 12% more, than Radeon HD 8790M.
ultra / 1080p
12−14
12−14
low / 720p
27−30
30−35
medium / 1080p
14−16
14−16
The average gaming FPS of Radeon HD 8790M in PLAYERUNKNOWN'S BATTLEGROUNDS is 11% more, than GeForce 840M.
high / 1080p
−
7−8
ultra / 1080p
4−5
4−5
QHD / 1440p
0−1
0−1
low / 720p
6−7
8−9
medium / 1080p
−
8−9
The average gaming FPS of Radeon HD 8790M in Red Dead Redemption 2 is 20% more, than GeForce 840M.
low / 768p
12−14
20−22
medium / 768p
9−10
12−14
high / 1080p
4−5
7−8
ultra / 1080p
3−4
5−6
4K / 2160p
0−1
1−2
The average gaming FPS of Radeon HD 8790M in The Witcher 3: Wild Hunt is 57% more, than GeForce 840M.
low / 768p
75−80
75−80
medium / 768p
35−40
40−45
ultra / 1080p
16−18
18−20
high / 768p
30−35
30−35
The average gaming FPS of Radeon HD 8790M in World of Tanks is 2% more, than GeForce 840M.
Full Specs
GeForce 840M
Radeon HD 8790M
Architecture
Maxwell
GCN
Code name
N15S-GT
Mars XTX
Type
Laptop
Laptop
Release date
12 March 2014
16 November 2012
Pipelines
384
384
Core clock speed
1029 MHz
850 MHz
Boost Clock
1124 MHz
900 MHz
Transistor count
950 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
17.98
21.60
Floating-point performance
863.2 gflops
691.2 gflops
Memory bus width
64 Bit
128 Bit
Memory clock speed
2000 MHz
4500 MHz
Memory bandwidth
16.02 GB/s
64 GB/s
Shared memory
-
-
DirectX
12 (11_0)
12 (11_1)
Shader Model
5.1
5.1
OpenGL
4.5
4.6
OpenCL
1.2
1.2
Vulkan
1.1.126
1.2.131
CUDA
+
Bus support
PCI Express 2.0, PCI Express 3.0
Bitcoin / BTC (SHA256)
92 Mh/s
80 Mh/s
Laptop size
medium sized
medium sized
Optimus
+
GPU Boost
2.0
GameWorks
+
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