GeForce GT 640M vs Radeon HD 7870M
Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 640M and Radeon HD 7870M. 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 GT 640M and Radeon HD 7870M. 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 GT 640M and Radeon HD 7870M are Laptop Graphics Cards
Note: GeForce GT 640M 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 GT 640M or Radeon HD 7870M here:
Main Specs
GeForce GT 640M
Radeon HD 7870M
Power consumption (TDP)
32 Watt
45 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Display Connectors
No outputs
No outputs
Check Price
Check Price
Radeon HD 7870M has 40% more power consumption, than GeForce GT 640M.
Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
GeForce GT 640M and Radeon HD 7870M have maximum RAM of 2 GB.
Both cards are used in Laptops.
GeForce GT 640M is build with Kepler architecture, and Radeon HD 7870M - with GCN.
GeForce GT 640M and Radeon HD 7870M are manufactured by 28 nm process technology.
Memory clock speed of Radeon HD 7870M is 2200 MHz higher, than GeForce GT 640M.
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
0−1
6−7
ultra / 1080p
0−1
4−5
QHD / 1440p
0−1
0−1
low / 720p
10−12
16−18
medium / 1080p
2−3
8−9
The average gaming FPS of Radeon HD 7870M in Assassin's Creed Odyssey is 100% more, than GeForce GT 640M.
high / 1080p
−
12−14
ultra / 1080p
3−4
10−11
QHD / 1440p
0−1
0−1
low / 720p
12−14
24−27
medium / 1080p
4−5
12−14
The average gaming FPS of Radeon HD 7870M in Battlefield 5 is 128% more, than GeForce GT 640M.
low / 768p
50−55
45−50
high / 1080p
45−50
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GT 640M in Call of Duty: Warzone is 6% more, than Radeon HD 7870M.
low / 768p
110−120
130−140
medium / 768p
85−90
110−120
ultra / 1080p
35−40
50−55
QHD / 1440p
−
30−33
4K / 2160p
10−11
27−30
high / 768p
55−60
80−85
The average gaming FPS of Radeon HD 7870M in Counter-Strike: Global Offensive is 34% more, than GeForce GT 640M.
low / 768p
70−75
55−60
ultra / 1080p
12−14
18−20
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640M in Cyberpunk 2077 is 7% more, than Radeon HD 7870M.
low / 768p
70−75
80−85
medium / 768p
40−45
60−65
ultra / 1080p
18−20
30−35
The average gaming FPS of Radeon HD 7870M in Dota 2 is 34% more, than GeForce GT 640M.
high / 1080p
2−3
8−9
ultra / 1080p
2−3
8−9
4K / 2160p
0−1
3−4
low / 720p
9−10
18−20
medium / 1080p
3−4
9−10
The average gaming FPS of Radeon HD 7870M in Far Cry 5 is 175% more, than GeForce GT 640M.
high / 1080p
−
14−16
ultra / 1080p
5−6
10−11
QHD / 1440p
1−2
−
low / 720p
45−50
60−65
medium / 1080p
7−8
21−24
The average gaming FPS of Radeon HD 7870M in Fortnite is 55% more, than GeForce GT 640M.
high / 1080p
2−3
12−14
ultra / 1080p
−
10−12
QHD / 1440p
0−1
1−2
low / 720p
14−16
24−27
medium / 1080p
5−6
14−16
The average gaming FPS of Radeon HD 7870M in Forza Horizon 4 is 142% more, than GeForce GT 640M.
low / 768p
40−45
50−55
medium / 768p
−
45−50
high / 1080p
3−4
12−14
ultra / 1080p
2−3
6−7
QHD / 1440p
0−1
0−1
medium / 720p
30−35
−
The average gaming FPS of Radeon HD 7870M in Grand Theft Auto V is 50% more, than GeForce GT 640M.
high / 1080p
1−2
5−6
ultra / 1080p
0−1
3−4
4K / 2160p
0−1
0−1
low / 720p
2−3
12−14
medium / 1080p
2−3
6−7
The average gaming FPS of Radeon HD 7870M in Metro Exodus is 300% more, than GeForce GT 640M.
low / 768p
85−90
95−100
high / 1080p
55−60
90−95
ultra / 1080p
−
80−85
medium / 1080p
−
90−95
The average gaming FPS of Radeon HD 7870M in Minecraft is 31% more, than GeForce GT 640M.
high / 1080p
14−16
16−18
ultra / 1080p
12−14
14−16
low / 720p
24−27
30−35
medium / 1080p
14−16
18−20
The average gaming FPS of Radeon HD 7870M in PLAYERUNKNOWN'S BATTLEGROUNDS is 17% more, than GeForce GT 640M.
ultra / 1080p
3−4
7−8
QHD / 1440p
0−1
0−1
low / 720p
3−4
12−14
medium / 1080p
−
10−12
The average gaming FPS of Radeon HD 7870M in Red Dead Redemption 2 is 233% more, than GeForce GT 640M.
low / 768p
7−8
24−27
medium / 768p
6−7
16−18
high / 1080p
3−4
9−10
ultra / 1080p
−
6−7
4K / 2160p
0−1
6−7
The average gaming FPS of Radeon HD 7870M in The Witcher 3: Wild Hunt is 240% more, than GeForce GT 640M.
low / 768p
70−75
85−90
medium / 768p
35−40
45−50
ultra / 1080p
12−14
20−22
high / 768p
27−30
35−40
The average gaming FPS of Radeon HD 7870M in World of Tanks is 29% more, than GeForce GT 640M.
Full Specs
GeForce GT 640M
Radeon HD 7870M
Architecture
Kepler
GCN
Code name
N13P-GS
Heathrow XT
Type
Laptop
Laptop
Release date
22 March 2012
24 April 2012
Pipelines
384
640
Core clock speed
800 MHz
Boost Clock
645 MHz
Transistor count
1,270 million
1,500 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
32.00
Floating-point performance
480.0 gflops
1,024 gflops
Memory bus width
128bit
128 Bit
Memory clock speed
1800 - 4000 MHz
4000 MHz
Memory bandwidth
64 GB/s
Shared memory
-
-
DirectX
12 API
12 (11_1)
Shader Model
5.1
5.1
OpenGL
4.5
4.6
OpenCL
1.1
1.2
Vulkan
1.1.126
1.2.131
CUDA
+
CUDA cores
384
Bus support
PCI Express 2.0, PCI Express 3.0
HDMI
+
HDCP
+
Maximum VGA resolution
Up to 2048x1536
3D Blu-Ray
+
Bitcoin / BTC (SHA256)
18 Mh/s
Laptop size
medium sized
large
Optimus
+
Check Price
Check Price
