GeForce 945A vs GeForce GT 640
When comparing GeForce 945A and GeForce GT 640, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce 945A and GeForce GT 640 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
GeForce 945A
Main Specs
GeForce 945A
GeForce GT 640
Power consumption (TDP)
33 Watt
65 Watt
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
None
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
2 GB
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
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GeForce GT 640 has 96% more power consumption, than GeForce 945A.
GeForce 945A is connected by PCIe 3.0 x8, and GeForce GT 640 uses PCIe 3.0 x16 interface.
GeForce GT 640 has 1 GB more memory, than GeForce 945A.
Both cards are used in Desktops.
GeForce 945A is build with Maxwell architecture, and GeForce GT 640 - with Kepler.
Core clock speed of GeForce 945A is 170 MHz higher, than GeForce GT 640.
GeForce 945A and GeForce GT 640 are manufactured by 28 nm process technology.
Memory clock speed of GeForce 945A is 3230 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
9−10
2−3
ultra / 1080p
5−6
1−2
QHD / 1440p
0−1
0−1
low / 720p
20−22
14−16
medium / 1080p
10−12
5−6
The average gaming FPS of GeForce 945A in Assassin's Creed Odyssey is 83% more, than GeForce GT 640.
high / 1080p
14−16
7−8
ultra / 1080p
12−14
5−6
QHD / 1440p
0−1
0−1
low / 720p
30−35
20−22
medium / 1080p
16−18
7−8
The average gaming FPS of GeForce 945A in Battlefield 5 is 90% more, than GeForce GT 640.
low / 768p
45−50
50−55
high / 1080p
45−50
35−40
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce 945A in Call of Duty: Warzone is 4% more, than GeForce GT 640.
low / 768p
160−170
110−120
medium / 768p
130−140
90−95
ultra / 1080p
65−70
45−50
QHD / 1440p
35−40
24−27
4K / 2160p
27−30
18−20
high / 768p
95−100
65−70
The average gaming FPS of GeForce 945A in Counter-Strike: Global Offensive is 44% more, than GeForce GT 640.
low / 768p
55−60
70−75
ultra / 1080p
24−27
21−24
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640 in Cyberpunk 2077 is 9% more, than GeForce 945A.
low / 768p
90−95
70−75
medium / 768p
70−75
50−55
ultra / 1080p
40−45
27−30
The average gaming FPS of GeForce 945A in Dota 2 is 35% more, than GeForce GT 640.
high / 1080p
10−11
3−4
ultra / 1080p
10−11
3−4
4K / 2160p
4−5
2−3
low / 720p
24−27
14−16
medium / 1080p
10−12
4−5
The average gaming FPS of GeForce 945A in Far Cry 5 is 140% more, than GeForce GT 640.
high / 1080p
16−18
10−12
ultra / 1080p
12−14
5−6
QHD / 1440p
−
2−3
low / 720p
70−75
50−55
medium / 1080p
30−35
16−18
The average gaming FPS of GeForce 945A in Fortnite is 57% more, than GeForce GT 640.
high / 1080p
14−16
6−7
ultra / 1080p
12−14
−
QHD / 1440p
3−4
4−5
4K / 2160p
−
2−3
low / 720p
30−35
21−24
medium / 1080p
18−20
9−10
The average gaming FPS of GeForce 945A in Forza Horizon 4 is 70% more, than GeForce GT 640.
low / 768p
60−65
45−50
medium / 768p
50−55
−
high / 1080p
16−18
7−8
ultra / 1080p
8−9
3−4
QHD / 1440p
0−1
0−1
medium / 720p
−
40−45
The average gaming FPS of GeForce 945A in Grand Theft Auto V is 52% more, than GeForce GT 640.
high / 1080p
6−7
2−3
ultra / 1080p
4−5
0−1
4K / 2160p
1−2
0−1
low / 720p
16−18
8−9
medium / 1080p
8−9
4−5
The average gaming FPS of GeForce 945A in Metro Exodus is 100% more, than GeForce GT 640.
low / 768p
100−105
80−85
high / 1080p
95−100
−
ultra / 1080p
85−90
70−75
medium / 1080p
95−100
−
The average gaming FPS of GeForce 945A in Minecraft is 23% more, than GeForce GT 640.
high / 1080p
18−20
−
ultra / 1080p
14−16
12−14
low / 720p
35−40
27−30
medium / 1080p
18−20
14−16
The average gaming FPS of GeForce 945A in PLAYERUNKNOWN'S BATTLEGROUNDS is 27% more, than GeForce GT 640.
high / 1080p
12−14
6−7
ultra / 1080p
8−9
4−5
QHD / 1440p
0−1
0−1
low / 720p
16−18
7−8
medium / 1080p
12−14
−
The average gaming FPS of GeForce 945A in Red Dead Redemption 2 is 100% more, than GeForce GT 640.
low / 768p
30−35
14−16
medium / 768p
21−24
10−11
high / 1080p
10−12
5−6
ultra / 1080p
7−8
4−5
4K / 2160p
6−7
0−1
The average gaming FPS of GeForce 945A in The Witcher 3: Wild Hunt is 125% more, than GeForce GT 640.
low / 768p
90−95
70−75
medium / 768p
50−55
35−40
ultra / 1080p
24−27
16−18
high / 768p
40−45
30−35
The average gaming FPS of GeForce 945A in World of Tanks is 35% more, than GeForce GT 640.
Full Specs
GeForce 945A
GeForce GT 640
Architecture
Maxwell
Kepler
Code name
GM108
GK107
Type
Desktop
Desktop
Release date
13 March 2015
5 June 2012
Pipelines
384
384
Core clock speed
1072 MHz
902 MHz
Boost Clock
1189 MHz
Transistor count
1,270 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
28.54
28.86
Floating-point performance
903.2 gflops
692.7 gflops
Length
145 mm
Memory bus width
64 Bit
128 Bit
Memory clock speed
5012 MHz
1782 MHz
Memory bandwidth
40.1 GB/s
28.51 GB/s
DirectX
12 (11_0)
12 (11_0)
Shader Model
5.1
5.1
OpenGL
4.6
4.6
OpenCL
1.2
1.2
Vulkan
1.1.126
1.1.126
CUDA
5.0
3.0
Bitcoin / BTC (SHA256)
108 Mh/s
24 Mh/s
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