GeForce GT 640 vs Radeon HD 7790
When choosing between GeForce GT 640 and Radeon HD 7790, 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 640 and Radeon HD 7790.
Main Specs
GeForce GT 640
Radeon HD 7790
Power consumption (TDP)
65 Watt
85 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
1x 6-pin
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
1 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
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Radeon HD 7790 has 30% more power consumption, than GeForce GT 640.
Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
GeForce GT 640 has 1 GB more memory, than Radeon HD 7790.
Both cards are used in Desktops.
GeForce GT 640 is build with Kepler architecture, and Radeon HD 7790 - with GCN 2.0.
Core clock speed of Radeon HD 7790 is 98 MHz higher, than GeForce GT 640.
GeForce GT 640 and Radeon HD 7790 are manufactured by 28 nm process technology.
Radeon HD 7790 is 38 mm longer, than GeForce GT 640.
Memory clock speed of Radeon HD 7790 is 4218 MHz higher, than GeForce GT 640.
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
2−3
16−18
ultra / 1080p
1−2
9−10
QHD / 1440p
0−1
4−5
4K / 2160p
−
4−5
low / 720p
14−16
30−35
medium / 1080p
5−6
20−22
The average gaming FPS of Radeon HD 7790 in Assassin's Creed Odyssey is 233% more, than GeForce GT 640.
high / 1080p
7−8
24−27
ultra / 1080p
5−6
21−24
QHD / 1440p
0−1
8−9
4K / 2160p
−
6−7
low / 720p
20−22
50−55
medium / 1080p
7−8
27−30
The average gaming FPS of Radeon HD 7790 in Battlefield 5 is 220% more, than GeForce GT 640.
low / 768p
50−55
45−50
high / 1080p
35−40
−
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GT 640 in Call of Duty: Warzone is 10% more, than Radeon HD 7790.
low / 768p
110−120
210−220
medium / 768p
90−95
180−190
ultra / 1080p
45−50
100−110
QHD / 1440p
24−27
55−60
4K / 2160p
18−20
30−35
high / 768p
65−70
140−150
The average gaming FPS of Radeon HD 7790 in Counter-Strike: Global Offensive is 101% more, than GeForce GT 640.
low / 768p
70−75
55−60
ultra / 1080p
21−24
40−45
medium / 1080p
45−50
45−50
The average gaming FPS of Radeon HD 7790 in Cyberpunk 2077 is 4% more, than GeForce GT 640.
low / 768p
70−75
110−120
medium / 768p
50−55
95−100
ultra / 1080p
27−30
65−70
The average gaming FPS of Radeon HD 7790 in Dota 2 is 82% more, than GeForce GT 640.
high / 1080p
3−4
18−20
ultra / 1080p
3−4
16−18
QHD / 1440p
−
16−18
4K / 2160p
2−3
6−7
low / 720p
14−16
40−45
medium / 1080p
4−5
20−22
The average gaming FPS of Radeon HD 7790 in Far Cry 5 is 320% more, than GeForce GT 640.
high / 1080p
10−12
24−27
ultra / 1080p
5−6
20−22
QHD / 1440p
2−3
16−18
low / 720p
50−55
100−110
medium / 1080p
16−18
55−60
The average gaming FPS of Radeon HD 7790 in Fortnite is 164% more, than GeForce GT 640.
high / 1080p
6−7
27−30
ultra / 1080p
−
21−24
QHD / 1440p
4−5
10−11
4K / 2160p
2−3
10−11
low / 720p
21−24
55−60
medium / 1080p
9−10
30−33
The average gaming FPS of Radeon HD 7790 in Forza Horizon 4 is 200% more, than GeForce GT 640.
low / 768p
45−50
85−90
medium / 768p
−
75−80
high / 1080p
7−8
30−35
ultra / 1080p
3−4
12−14
QHD / 1440p
0−1
3−4
medium / 720p
40−45
−
The average gaming FPS of Radeon HD 7790 in Grand Theft Auto V is 131% more, than GeForce GT 640.
high / 1080p
2−3
10−11
ultra / 1080p
0−1
8−9
4K / 2160p
0−1
3−4
low / 720p
8−9
30−35
medium / 1080p
4−5
12−14
The average gaming FPS of Radeon HD 7790 in Metro Exodus is 260% more, than GeForce GT 640.
low / 768p
80−85
110−120
ultra / 1080p
70−75
−
medium / 1080p
−
100−110
The average gaming FPS of Radeon HD 7790 in Minecraft is 40% more, than GeForce GT 640.
high / 1080p
−
21−24
ultra / 1080p
12−14
18−20
low / 720p
27−30
55−60
medium / 1080p
14−16
24−27
The average gaming FPS of Radeon HD 7790 in PLAYERUNKNOWN'S BATTLEGROUNDS is 88% more, than GeForce GT 640.
high / 1080p
6−7
14−16
ultra / 1080p
4−5
10−11
QHD / 1440p
0−1
0−1
low / 720p
7−8
30−33
medium / 1080p
−
16−18
The average gaming FPS of Radeon HD 7790 in Red Dead Redemption 2 is 216% more, than GeForce GT 640.
low / 768p
14−16
55−60
medium / 768p
10−11
35−40
high / 1080p
5−6
20−22
ultra / 1080p
4−5
10−12
4K / 2160p
0−1
8−9
The average gaming FPS of Radeon HD 7790 in The Witcher 3: Wild Hunt is 287% more, than GeForce GT 640.
low / 768p
70−75
100−110
medium / 768p
35−40
60−65
ultra / 1080p
16−18
35−40
high / 768p
30−35
55−60
The average gaming FPS of Radeon HD 7790 in World of Tanks is 66% more, than GeForce GT 640.
Full Specs
GeForce GT 640
Radeon HD 7790
Architecture
Kepler
GCN 2.0
Code name
GK107
Bonaire
Type
Desktop
Desktop
Release date
5 June 2012
22 March 2013
Pipelines
384
896
Core clock speed
902 MHz
1000 MHz
Transistor count
1,270 million
2,080 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
28.86
56.00
Floating-point performance
692.7 gflops
1,792 gflops
Length
145 mm
183 mm
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
6000 MHz
Memory bandwidth
28.51 GB/s
96 GB/s
DirectX
12 (11_0)
12 (12_0)
Shader Model
5.1
6.3
OpenGL
4.6
4.6
OpenCL
1.2
2.0
Vulkan
1.1.126
1.2.131
CUDA
3.0
Bitcoin / BTC (SHA256)
24 Mh/s
218 Mh/s
Ethereum / ETH (DaggerHashimoto)
5.2 Mh/s
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