GeForce GT 640M vs Radeon HD 6790
When choosing between GeForce GT 640M and Radeon HD 6790, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 640M and Radeon HD 6790.
GeForce GT 640M is a Laptop Graphics Card
Note: GeForce GT 640M 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 GT 640M here:
Main Specs
GeForce GT 640M
Radeon HD 6790
Power consumption (TDP)
32 Watt
150 Watt
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Display Connectors
No outputs
2x DVI, 1x HDMI, 1x DisplayPort
Check Price
Check Price
Radeon HD 6790 has 368% more power consumption, than GeForce GT 640M.
GeForce GT 640M is connected by PCIe 3.0 x16, and Radeon HD 6790 uses PCIe 2.0 x16 interface.
GeForce GT 640M has 1 GB more memory, than Radeon HD 6790.
GeForce GT 640M is used in Laptops, and Radeon HD 6790 - in Desktops.
GeForce GT 640M is build with Kepler architecture, and Radeon HD 6790 - with Terascale 2.
GeForce GT 640M is manufactured by 28 nm process technology, and Radeon HD 6790 - by 40 nm process technology.
Memory clock speed of GeForce GT 640M is 750 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
0−1
7−8
ultra / 1080p
0−1
4−5
QHD / 1440p
0−1
0−1
low / 720p
10−12
18−20
medium / 1080p
2−3
9−10
The average gaming FPS of Radeon HD 6790 in Assassin's Creed Odyssey is 133% more, than GeForce GT 640M.
high / 1080p
−
12−14
ultra / 1080p
3−4
10−12
QHD / 1440p
0−1
0−1
low / 720p
12−14
27−30
medium / 1080p
4−5
14−16
The average gaming FPS of Radeon HD 6790 in Battlefield 5 is 157% 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 6790.
low / 768p
110−120
140−150
medium / 768p
85−90
120−130
ultra / 1080p
35−40
60−65
QHD / 1440p
−
30−35
4K / 2160p
10−11
27−30
high / 768p
55−60
90−95
The average gaming FPS of Radeon HD 6790 in Counter-Strike: Global Offensive is 47% more, than GeForce GT 640M.
low / 768p
70−75
55−60
ultra / 1080p
12−14
21−24
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640M in Cyberpunk 2077 is 4% more, than Radeon HD 6790.
low / 768p
70−75
85−90
medium / 768p
40−45
65−70
ultra / 1080p
18−20
35−40
The average gaming FPS of Radeon HD 6790 in Dota 2 is 45% more, than GeForce GT 640M.
high / 1080p
2−3
9−10
ultra / 1080p
2−3
8−9
4K / 2160p
0−1
4−5
low / 720p
9−10
21−24
medium / 1080p
3−4
10−11
The average gaming FPS of Radeon HD 6790 in Far Cry 5 is 200% more, than GeForce GT 640M.
high / 1080p
−
16−18
ultra / 1080p
5−6
10−12
QHD / 1440p
1−2
−
low / 720p
45−50
65−70
medium / 1080p
7−8
27−30
The average gaming FPS of Radeon HD 6790 in Fortnite is 75% more, than GeForce GT 640M.
high / 1080p
2−3
14−16
ultra / 1080p
−
12−14
QHD / 1440p
0−1
2−3
low / 720p
14−16
27−30
medium / 1080p
5−6
16−18
The average gaming FPS of Radeon HD 6790 in Forza Horizon 4 is 185% more, than GeForce GT 640M.
low / 768p
40−45
55−60
medium / 768p
−
50−55
high / 1080p
3−4
14−16
ultra / 1080p
2−3
7−8
QHD / 1440p
0−1
0−1
medium / 720p
30−35
−
The average gaming FPS of Radeon HD 6790 in Grand Theft Auto V is 62% more, than GeForce GT 640M.
high / 1080p
1−2
5−6
ultra / 1080p
0−1
4−5
4K / 2160p
0−1
0−1
low / 720p
2−3
14−16
medium / 1080p
2−3
7−8
The average gaming FPS of Radeon HD 6790 in Metro Exodus is 350% more, than GeForce GT 640M.
low / 768p
85−90
95−100
high / 1080p
55−60
90−95
ultra / 1080p
−
85−90
medium / 1080p
−
95−100
The average gaming FPS of Radeon HD 6790 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
35−40
medium / 1080p
14−16
18−20
The average gaming FPS of Radeon HD 6790 in PLAYERUNKNOWN'S BATTLEGROUNDS is 29% more, than GeForce GT 640M.
ultra / 1080p
3−4
8−9
QHD / 1440p
0−1
0−1
low / 720p
3−4
14−16
medium / 1080p
−
10−12
The average gaming FPS of Radeon HD 6790 in Red Dead Redemption 2 is 266% more, than GeForce GT 640M.
low / 768p
7−8
27−30
medium / 768p
6−7
18−20
high / 1080p
3−4
10−11
ultra / 1080p
−
7−8
4K / 2160p
0−1
6−7
The average gaming FPS of Radeon HD 6790 in The Witcher 3: Wild Hunt is 280% more, than GeForce GT 640M.
low / 768p
70−75
85−90
medium / 768p
35−40
45−50
ultra / 1080p
12−14
21−24
high / 768p
27−30
40−45
The average gaming FPS of Radeon HD 6790 in World of Tanks is 35% more, than GeForce GT 640M.
Full Specs
GeForce GT 640M
Radeon HD 6790
Architecture
Kepler
Terascale 2
Code name
N13P-GS
Barts
Type
Laptop
Desktop
Release date
22 March 2012
4 April 2011
Pipelines
384
800
Core clock speed
840 MHz
Boost Clock
645 MHz
Transistor count
1,270 million
1,700 million
Manufacturing process technology
28 nm
40 nm
Texture fill rate
33.60
Floating-point performance
480.0 gflops
1,344.0 gflops
Length
198 mm
Memory bus width
128bit
256 Bit
Memory clock speed
1800 - 4000 MHz
1050 MHz
Memory bandwidth
134.4 GB/s
Shared memory
-
DirectX
12 API
11.2 (11_0)
Shader Model
5.1
5.0
OpenGL
4.5
4.4
OpenCL
1.1
1.2
Vulkan
1.1.126
N/A
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
122 Mh/s
Laptop size
medium sized
Optimus
+
Check Price
Check Price
