GeForce GT 640 vs Radeon HD 7970
When choosing between GeForce GT 640 and Radeon HD 7970, 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 7970.
Main Specs
GeForce GT 640
Radeon HD 7970
Power consumption (TDP)
65 Watt
300 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
1x 6-pin + 1x 8-pin
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
3 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
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Radeon HD 7970 has 361% more power consumption, than GeForce GT 640.
Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
Radeon HD 7970 has 1 GB more memory, than GeForce GT 640.
Both cards are used in Desktops.
GeForce GT 640 is build with Kepler architecture, and Radeon HD 7970 - with GCN.
GeForce GT 640 and Radeon HD 7970 are manufactured by 28 nm process technology.
Radeon HD 7970 is 129 mm longer, than GeForce GT 640.
Memory clock speed of GeForce GT 640 is 407 MHz higher, than Radeon HD 7970.
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
35−40
ultra / 1080p
1−2
21−24
QHD / 1440p
0−1
16−18
4K / 2160p
−
10−11
low / 720p
14−16
60−65
medium / 1080p
5−6
40−45
The average gaming FPS of Radeon HD 7970 in Assassin's Creed Odyssey is 583% more, than GeForce GT 640.
high / 1080p
7−8
55−60
ultra / 1080p
5−6
45−50
QHD / 1440p
0−1
35−40
4K / 2160p
−
18−20
low / 720p
20−22
100−110
medium / 1080p
7−8
60−65
The average gaming FPS of Radeon HD 7970 in Battlefield 5 is 580% more, than GeForce GT 640.
low / 768p
50−55
50−55
high / 1080p
35−40
−
QHD / 1440p
0−1
0−1
GeForce GT 640 and Radeon HD 7970 have the same average FPS in Call of Duty: Warzone.
low / 768p
110−120
250−260
medium / 768p
90−95
220−230
ultra / 1080p
45−50
180−190
QHD / 1440p
24−27
110−120
4K / 2160p
18−20
70−75
high / 768p
65−70
210−220
The average gaming FPS of Radeon HD 7970 in Counter-Strike: Global Offensive is 190% more, than GeForce GT 640.
low / 768p
70−75
60−65
ultra / 1080p
21−24
−
medium / 1080p
45−50
55−60
GeForce GT 640 and Radeon HD 7970 have the same average FPS in Cyberpunk 2077.
low / 768p
70−75
120−130
medium / 768p
50−55
110−120
ultra / 1080p
27−30
100−110
The average gaming FPS of Radeon HD 7970 in Dota 2 is 125% more, than GeForce GT 640.
high / 1080p
3−4
45−50
ultra / 1080p
3−4
40−45
QHD / 1440p
−
27−30
4K / 2160p
2−3
14−16
low / 720p
14−16
80−85
medium / 1080p
4−5
45−50
The average gaming FPS of Radeon HD 7970 in Far Cry 5 is 840% more, than GeForce GT 640.
high / 1080p
10−12
60−65
ultra / 1080p
5−6
45−50
QHD / 1440p
2−3
27−30
4K / 2160p
−
27−30
low / 720p
50−55
180−190
medium / 1080p
16−18
110−120
The average gaming FPS of Radeon HD 7970 in Fortnite is 411% more, than GeForce GT 640.
high / 1080p
6−7
60−65
ultra / 1080p
−
45−50
QHD / 1440p
4−5
30−35
4K / 2160p
2−3
24−27
low / 720p
21−24
100−110
medium / 1080p
9−10
65−70
The average gaming FPS of Radeon HD 7970 in Forza Horizon 4 is 544% more, than GeForce GT 640.
low / 768p
45−50
140−150
medium / 768p
−
120−130
high / 1080p
7−8
70−75
ultra / 1080p
3−4
30−35
QHD / 1440p
0−1
21−24
medium / 720p
40−45
−
The average gaming FPS of Radeon HD 7970 in Grand Theft Auto V is 336% more, than GeForce GT 640.
high / 1080p
2−3
24−27
ultra / 1080p
0−1
20−22
QHD / 1440p
−
16−18
4K / 2160p
0−1
8−9
low / 720p
8−9
65−70
medium / 1080p
4−5
30−35
The average gaming FPS of Radeon HD 7970 in Metro Exodus is 720% more, than GeForce GT 640.
low / 768p
80−85
130−140
ultra / 1080p
70−75
−
medium / 1080p
−
120−130
The average gaming FPS of Radeon HD 7970 in Minecraft is 64% more, than GeForce GT 640.
ultra / 1080p
12−14
14−16
low / 720p
27−30
100−110
medium / 1080p
14−16
18−20
The average gaming FPS of Radeon HD 7970 in PLAYERUNKNOWN'S BATTLEGROUNDS is 155% more, than GeForce GT 640.
high / 1080p
6−7
24−27
ultra / 1080p
4−5
16−18
QHD / 1440p
0−1
10−11
4K / 2160p
−
7−8
low / 720p
7−8
65−70
medium / 1080p
−
35−40
The average gaming FPS of Radeon HD 7970 in Red Dead Redemption 2 is 500% more, than GeForce GT 640.
low / 768p
14−16
130−140
medium / 768p
10−11
85−90
high / 1080p
5−6
45−50
ultra / 1080p
4−5
24−27
4K / 2160p
0−1
16−18
The average gaming FPS of Radeon HD 7970 in The Witcher 3: Wild Hunt is 812% more, than GeForce GT 640.
low / 768p
70−75
90−95
medium / 768p
35−40
60−65
ultra / 1080p
16−18
50−55
high / 768p
30−35
60−65
The average gaming FPS of Radeon HD 7970 in World of Tanks is 71% more, than GeForce GT 640.
Full Specs
GeForce GT 640
Radeon HD 7970
Architecture
Kepler
GCN
Code name
GK107
Tahiti XT
Type
Desktop
Desktop
Release date
5 June 2012
22 December 2011
Pipelines
384
2048
Core clock speed
902 MHz
Boost Clock
925 MHz
Transistor count
1,270 million
4,313 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
28.86
118.4
Floating-point performance
692.7 gflops
3,789 gflops
Length
145 mm
274 mm
Memory bus width
128 Bit
384 Bit
Memory clock speed
1782 MHz
1375 MHz
Memory bandwidth
28.51 GB/s
264 GB/s
Shared memory
-
DirectX
12 (11_0)
Shader Model
5.1
5.1
OpenGL
4.6
4.6
OpenCL
1.2
1.2
Vulkan
1.1.126
CUDA
3.0
FreeSync
+
Bus support
PCIe 2.1 x16
HDMI
+
Bitcoin / BTC (SHA256)
24 Mh/s
485 Mh/s
Eyefinity
+
Design
reference
CrossFire
+
Ethereum / ETH (DaggerHashimoto)
20.71 Mh/s
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