GeForce 840M vs Radeon HD 7870M
In this comparison between GeForce 840M and Radeon HD 7870M 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 7870M will be their preference. Study the comparison tables below and make your choice.
GeForce 840M and Radeon HD 7870M are Laptop Graphics Cards
Note: GeForce 840M and Radeon HD 7870M 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 7870M here:
Main Specs
GeForce 840M
Radeon HD 7870M
Power consumption (TDP)
33 Watt
45 Watt
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Memory type
DDR3
GDDR5
Maximum RAM amount
4 GB
2 GB
Display Connectors
No outputs
No outputs
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Radeon HD 7870M has 36% more power consumption, than GeForce 840M.
GeForce 840M is connected by PCIe 3.0 x8, and Radeon HD 7870M uses PCIe 3.0 x16 interface.
GeForce 840M has 2 GB more memory, than Radeon HD 7870M.
Both cards are used in Laptops.
GeForce 840M is build with Maxwell architecture, and Radeon HD 7870M - with GCN.
Core clock speed of GeForce 840M is 229 MHz higher, than Radeon HD 7870M.
GeForce 840M and Radeon HD 7870M are manufactured by 28 nm process technology.
Memory clock speed of Radeon HD 7870M is 2000 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
6−7
ultra / 1080p
0−1
4−5
QHD / 1440p
0−1
0−1
low / 720p
12−14
16−18
medium / 1080p
3−4
8−9
The average gaming FPS of Radeon HD 7870M in Assassin's Creed Odyssey is 66% more, than GeForce 840M.
high / 1080p
−
12−14
ultra / 1080p
4−5
10−11
QHD / 1440p
0−1
0−1
low / 720p
16−18
24−27
medium / 1080p
5−6
12−14
The average gaming FPS of Radeon HD 7870M in Battlefield 5 is 77% 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 7870M in Call of Duty: Warzone is 4% more, than GeForce 840M.
low / 768p
120−130
130−140
medium / 768p
90−95
110−120
ultra / 1080p
40−45
50−55
QHD / 1440p
24−27
30−33
4K / 2160p
18−20
27−30
high / 768p
65−70
80−85
The average gaming FPS of Radeon HD 7870M in Counter-Strike: Global Offensive is 19% more, than GeForce 840M.
low / 768p
85−90
55−60
ultra / 1080p
16−18
18−20
medium / 1080p
40−45
45−50
The average gaming FPS of GeForce 840M in Cyberpunk 2077 is 19% more, than Radeon HD 7870M.
low / 768p
75−80
80−85
medium / 768p
50−55
60−65
ultra / 1080p
24−27
30−35
The average gaming FPS of Radeon HD 7870M in Dota 2 is 15% more, than GeForce 840M.
high / 1080p
2−3
8−9
ultra / 1080p
2−3
8−9
4K / 2160p
0−1
3−4
low / 720p
12−14
18−20
medium / 1080p
3−4
9−10
The average gaming FPS of Radeon HD 7870M in Far Cry 5 is 120% more, than GeForce 840M.
high / 1080p
10−11
14−16
ultra / 1080p
5−6
10−11
QHD / 1440p
2−3
−
low / 720p
50−55
60−65
medium / 1080p
10−12
21−24
The average gaming FPS of Radeon HD 7870M in Fortnite is 42% more, than GeForce 840M.
high / 1080p
4−5
12−14
ultra / 1080p
−
10−12
QHD / 1440p
0−1
1−2
low / 720p
16−18
24−27
medium / 1080p
7−8
14−16
The average gaming FPS of Radeon HD 7870M in Forza Horizon 4 is 88% more, than GeForce 840M.
low / 768p
45−50
50−55
medium / 768p
−
45−50
high / 1080p
5−6
12−14
ultra / 1080p
2−3
6−7
QHD / 1440p
0−1
0−1
medium / 720p
35−40
−
The average gaming FPS of Radeon HD 7870M in Grand Theft Auto V is 33% more, than GeForce 840M.
high / 1080p
1−2
5−6
ultra / 1080p
0−1
3−4
4K / 2160p
0−1
0−1
low / 720p
5−6
12−14
medium / 1080p
3−4
6−7
The average gaming FPS of Radeon HD 7870M in Metro Exodus is 166% more, than GeForce 840M.
low / 768p
90−95
95−100
high / 1080p
85−90
90−95
ultra / 1080p
70−75
80−85
medium / 1080p
90−95
90−95
The average gaming FPS of Radeon HD 7870M in Minecraft is 5% more, than GeForce 840M.
high / 1080p
−
16−18
ultra / 1080p
12−14
14−16
low / 720p
27−30
30−35
medium / 1080p
14−16
18−20
The average gaming FPS of Radeon HD 7870M in PLAYERUNKNOWN'S BATTLEGROUNDS is 22% more, than GeForce 840M.
ultra / 1080p
4−5
7−8
QHD / 1440p
0−1
0−1
low / 720p
6−7
12−14
medium / 1080p
−
10−12
The average gaming FPS of Radeon HD 7870M in Red Dead Redemption 2 is 100% more, than GeForce 840M.
low / 768p
12−14
24−27
medium / 768p
9−10
16−18
high / 1080p
4−5
9−10
ultra / 1080p
3−4
6−7
4K / 2160p
0−1
6−7
The average gaming FPS of Radeon HD 7870M in The Witcher 3: Wild Hunt is 100% more, than GeForce 840M.
low / 768p
75−80
85−90
medium / 768p
35−40
45−50
ultra / 1080p
16−18
20−22
high / 768p
30−35
35−40
The average gaming FPS of Radeon HD 7870M in World of Tanks is 17% more, than GeForce 840M.
Full Specs
GeForce 840M
Radeon HD 7870M
Architecture
Maxwell
GCN
Code name
N15S-GT
Heathrow XT
Type
Laptop
Laptop
Release date
12 March 2014
24 April 2012
Pipelines
384
640
Core clock speed
1029 MHz
800 MHz
Boost Clock
1124 MHz
Transistor count
1,500 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
17.98
32.00
Floating-point performance
863.2 gflops
1,024 gflops
Memory bus width
64 Bit
128 Bit
Memory clock speed
2000 MHz
4000 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
Laptop size
medium sized
large
Optimus
+
GPU Boost
2.0
GameWorks
+
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