GeForce GT 640 vs GeForce GTX 775M
In this comparison between GeForce GT 640 and GeForce GTX 775M you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 640 will be the best choice, for others GeForce GTX 775M will be their preference. Study the comparison tables below and make your choice.
GeForce GTX 775M is a Laptop Graphics Card
Note: GeForce GTX 775M 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 GTX 775M here:
Main Specs
GeForce GT 640
GeForce GTX 775M
Power consumption (TDP)
65 Watt
100 Watt
Interface
PCIe 3.0 x16
Supplementary power connectors
None
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
4 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
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GeForce GTX 775M has 53% more power consumption, than GeForce GT 640.
GeForce GTX 775M has 2 GB more memory, than GeForce GT 640.
GeForce GT 640 is used in Desktops, and GeForce GTX 775M - in Laptops.
GeForce GT 640 and GeForce GTX 775M are build with Kepler architecture.
Core clock speed of GeForce GT 640 is 183 MHz higher, than GeForce GTX 775M.
GeForce GT 640 and GeForce GTX 775M are manufactured by 28 nm process technology.
Memory clock speed of GeForce GTX 775M is 1818 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
21−24
ultra / 1080p
1−2
12−14
QHD / 1440p
0−1
7−8
4K / 2160p
−
5−6
low / 720p
14−16
40−45
medium / 1080p
5−6
27−30
The average gaming FPS of GeForce GTX 775M in Assassin's Creed Odyssey is 333% more, than GeForce GT 640.
high / 1080p
7−8
30−35
ultra / 1080p
5−6
30−33
QHD / 1440p
0−1
14−16
4K / 2160p
−
9−10
low / 720p
20−22
70−75
medium / 1080p
7−8
35−40
The average gaming FPS of GeForce GTX 775M in Battlefield 5 is 330% 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 GeForce GTX 775M have the same average FPS in Call of Duty: Warzone.
low / 768p
110−120
230−240
medium / 768p
90−95
200−210
ultra / 1080p
45−50
120−130
QHD / 1440p
24−27
95−100
4K / 2160p
18−20
55−60
high / 768p
65−70
170−180
The average gaming FPS of GeForce GTX 775M in Counter-Strike: Global Offensive is 144% more, than GeForce GT 640.
low / 768p
70−75
60−65
ultra / 1080p
21−24
50−55
medium / 1080p
45−50
55−60
The average gaming FPS of GeForce GTX 775M in Cyberpunk 2077 is 21% more, than GeForce GT 640.
low / 768p
70−75
120−130
medium / 768p
50−55
110−120
ultra / 1080p
27−30
80−85
The average gaming FPS of GeForce GTX 775M in Dota 2 is 109% more, than GeForce GT 640.
high / 1080p
3−4
27−30
ultra / 1080p
3−4
24−27
QHD / 1440p
−
20−22
4K / 2160p
2−3
8−9
low / 720p
14−16
55−60
medium / 1080p
4−5
27−30
The average gaming FPS of GeForce GTX 775M in Far Cry 5 is 480% more, than GeForce GT 640.
high / 1080p
10−12
35−40
ultra / 1080p
5−6
27−30
QHD / 1440p
2−3
16−18
low / 720p
50−55
130−140
medium / 1080p
16−18
75−80
The average gaming FPS of GeForce GTX 775M in Fortnite is 247% more, than GeForce GT 640.
high / 1080p
6−7
35−40
ultra / 1080p
−
27−30
QHD / 1440p
4−5
14−16
4K / 2160p
2−3
14−16
low / 720p
21−24
70−75
medium / 1080p
9−10
40−45
The average gaming FPS of GeForce GTX 775M in Forza Horizon 4 is 300% more, than GeForce GT 640.
low / 768p
45−50
100−110
medium / 768p
−
95−100
high / 1080p
7−8
40−45
ultra / 1080p
3−4
18−20
QHD / 1440p
0−1
8−9
medium / 720p
40−45
−
The average gaming FPS of GeForce GTX 775M in Grand Theft Auto V is 189% more, than GeForce GT 640.
high / 1080p
2−3
14−16
ultra / 1080p
0−1
10−12
QHD / 1440p
−
10−12
4K / 2160p
0−1
3−4
low / 720p
8−9
40−45
medium / 1080p
4−5
18−20
The average gaming FPS of GeForce GTX 775M in Metro Exodus is 400% more, than GeForce GT 640.
low / 768p
80−85
120−130
ultra / 1080p
70−75
−
medium / 1080p
−
110−120
The average gaming FPS of GeForce GTX 775M in Minecraft is 52% more, than GeForce GT 640.
ultra / 1080p
12−14
14−16
low / 720p
27−30
70−75
medium / 1080p
14−16
18−20
The average gaming FPS of GeForce GTX 775M in PLAYERUNKNOWN'S BATTLEGROUNDS is 94% more, than GeForce GT 640.
high / 1080p
6−7
16−18
ultra / 1080p
4−5
10−12
QHD / 1440p
0−1
2−3
4K / 2160p
−
2−3
low / 720p
7−8
40−45
medium / 1080p
−
21−24
The average gaming FPS of GeForce GTX 775M in Red Dead Redemption 2 is 283% more, than GeForce GT 640.
low / 768p
14−16
80−85
medium / 768p
10−11
45−50
high / 1080p
5−6
27−30
ultra / 1080p
4−5
14−16
4K / 2160p
0−1
9−10
The average gaming FPS of GeForce GTX 775M in The Witcher 3: Wild Hunt is 437% more, than GeForce GT 640.
low / 768p
70−75
90−95
medium / 768p
35−40
60−65
ultra / 1080p
16−18
40−45
high / 768p
30−35
55−60
The average gaming FPS of GeForce GTX 775M in World of Tanks is 61% more, than GeForce GT 640.
Full Specs
GeForce GT 640
GeForce GTX 775M
Architecture
Kepler
Kepler
Code name
GK107
N13E-GTX-A2
Type
Desktop
Laptop
Release date
5 June 2012
24 September 2013
Pipelines
384
1344
Core clock speed
902 MHz
719 MHz
Transistor count
1,270 million
3540 Million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
28.86
Floating-point performance
692.7 gflops
Length
145 mm
Memory bus width
128 Bit
256 Bit
Memory clock speed
1782 MHz
3600 MHz
Memory bandwidth
28.51 GB/s
Shared memory
-
DirectX
12 (11_0)
DirectX 11, Shader 5.0
Shader Model
5.1
OpenGL
4.6
OpenCL
1.2
Vulkan
1.1.126
CUDA
3.0
+
SLI options
+
Bitcoin / BTC (SHA256)
24 Mh/s
Laptop size
large
Optimus
+
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