GeForce GT 640 vs GeForce GTX 850A
When choosing between GeForce GT 640 and GeForce GTX 850A, 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 GeForce GTX 850A.
GeForce GTX 850A
Main Specs
GeForce GT 640
GeForce GTX 850A
Power consumption (TDP)
65 Watt
45 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
Memory type
DDR3
DDR3
Maximum RAM amount
2 GB
2 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
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GeForce GT 640 has 44% more power consumption, than GeForce GTX 850A.
Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
GeForce GT 640 and GeForce GTX 850A have maximum RAM of 2 GB.
Both cards are used in Desktops.
GeForce GT 640 is build with Kepler architecture, and GeForce GTX 850A - with Maxwell.
Both graphics cards have the same core clock speed.
GeForce GT 640 and GeForce GTX 850A are manufactured by 28 nm process technology.
Memory clock speed of GeForce GTX 850A is 18 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
1−2
ultra / 1080p
1−2
0−1
QHD / 1440p
0−1
0−1
low / 720p
14−16
12−14
medium / 1080p
5−6
3−4
The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 16% more, than GeForce GTX 850A.
high / 1080p
7−8
−
ultra / 1080p
5−6
4−5
QHD / 1440p
0−1
0−1
low / 720p
20−22
16−18
medium / 1080p
7−8
5−6
The average gaming FPS of GeForce GT 640 in Battlefield 5 is 22% more, than GeForce GTX 850A.
low / 768p
50−55
45−50
high / 1080p
35−40
40−45
QHD / 1440p
0−1
0−1
GeForce GT 640 and GeForce GTX 850A have the same average FPS in Call of Duty: Warzone.
low / 768p
110−120
120−130
medium / 768p
90−95
90−95
ultra / 1080p
45−50
40−45
QHD / 1440p
24−27
24−27
4K / 2160p
18−20
18−20
high / 768p
65−70
65−70
The average gaming FPS of GeForce GTX 850A in Counter-Strike: Global Offensive is 1% more, than GeForce GT 640.
low / 768p
70−75
85−90
ultra / 1080p
21−24
16−18
medium / 1080p
45−50
40−45
The average gaming FPS of GeForce GTX 850A in Cyberpunk 2077 is 4% more, than GeForce GT 640.
low / 768p
70−75
75−80
medium / 768p
50−55
50−55
ultra / 1080p
27−30
24−27
GeForce GT 640 and GeForce GTX 850A have the same average FPS in Dota 2.
high / 1080p
3−4
2−3
ultra / 1080p
3−4
2−3
4K / 2160p
2−3
0−1
low / 720p
14−16
12−14
medium / 1080p
4−5
3−4
The average gaming FPS of GeForce GT 640 in Far Cry 5 is 20% more, than GeForce GTX 850A.
high / 1080p
10−12
10−11
ultra / 1080p
5−6
5−6
QHD / 1440p
2−3
2−3
low / 720p
50−55
50−55
medium / 1080p
16−18
10−12
The average gaming FPS of GeForce GT 640 in Fortnite is 6% more, than GeForce GTX 850A.
high / 1080p
6−7
4−5
QHD / 1440p
4−5
0−1
4K / 2160p
2−3
−
low / 720p
21−24
16−18
medium / 1080p
9−10
7−8
The average gaming FPS of GeForce GT 640 in Forza Horizon 4 is 33% more, than GeForce GTX 850A.
low / 768p
45−50
45−50
high / 1080p
7−8
5−6
ultra / 1080p
3−4
2−3
QHD / 1440p
0−1
0−1
medium / 720p
40−45
35−40
The average gaming FPS of GeForce GT 640 in Grand Theft Auto V is 8% more, than GeForce GTX 850A.
high / 1080p
2−3
1−2
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
0−1
low / 720p
8−9
5−6
medium / 1080p
4−5
3−4
The average gaming FPS of GeForce GT 640 in Metro Exodus is 66% more, than GeForce GTX 850A.
low / 768p
80−85
90−95
high / 1080p
−
85−90
ultra / 1080p
70−75
70−75
medium / 1080p
−
90−95
The average gaming FPS of GeForce GTX 850A in Minecraft is 6% more, than GeForce GT 640.
ultra / 1080p
12−14
12−14
low / 720p
27−30
27−30
medium / 1080p
14−16
14−16
GeForce GT 640 and GeForce GTX 850A have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
high / 1080p
6−7
−
ultra / 1080p
4−5
4−5
QHD / 1440p
0−1
0−1
low / 720p
7−8
6−7
The average gaming FPS of GeForce GT 640 in Red Dead Redemption 2 is 20% more, than GeForce GTX 850A.
low / 768p
14−16
12−14
medium / 768p
10−11
9−10
high / 1080p
5−6
4−5
ultra / 1080p
4−5
3−4
4K / 2160p
0−1
0−1
The average gaming FPS of GeForce GT 640 in The Witcher 3: Wild Hunt is 14% more, than GeForce GTX 850A.
low / 768p
70−75
75−80
medium / 768p
35−40
35−40
ultra / 1080p
16−18
16−18
high / 768p
30−35
30−35
The average gaming FPS of GeForce GTX 850A in World of Tanks is 5% more, than GeForce GT 640.
Full Specs
GeForce GT 640
GeForce GTX 850A
Architecture
Kepler
Maxwell
Code name
GK107
GM107
Type
Desktop
Desktop
Release date
5 June 2012
17 March 2014
Pipelines
384
640
Core clock speed
902 MHz
902 MHz
Boost Clock
936 MHz
Transistor count
1,270 million
1,870 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
28.86
37.44
Floating-point performance
692.7 gflops
1,198 gflops
Length
145 mm
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
1800 MHz
Memory bandwidth
28.51 GB/s
28.8 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
3.0
5.0
Bitcoin / BTC (SHA256)
24 Mh/s
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