GeForce GT 640 vs GeForce GT 650M SLI
When choosing between GeForce GT 640 and GeForce GT 650M SLI, 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 GT 650M SLI.
GeForce GT 650M SLI is a Laptop Graphics Card
Note: GeForce GT 650M SLI 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 GT 650M SLI here:
Main Specs
GeForce GT 640
GeForce GT 650M SLI
Power consumption (TDP)
65 Watt
Interface
PCIe 3.0 x16
Supplementary power connectors
None
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
2x2 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
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GeForce GT 640 and GeForce GT 650M SLI have maximum RAM of 2 GB.
GeForce GT 640 is used in Desktops, and GeForce GT 650M SLI - in Laptops.
GeForce GT 640 and GeForce GT 650M SLI are build with Kepler architecture.
Core clock speed of GeForce GT 640 is 112 MHz higher, than GeForce GT 650M SLI.
GeForce GT 640 and GeForce GT 650M SLI are manufactured by 28 nm process technology.
Memory clock speed of GeForce GT 650M SLI is 2218 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
12−14
ultra / 1080p
1−2
7−8
QHD / 1440p
0−1
2−3
low / 720p
14−16
24−27
medium / 1080p
5−6
14−16
The average gaming FPS of GeForce GT 650M SLI in Assassin's Creed Odyssey is 150% more, than GeForce GT 640.
high / 1080p
7−8
20−22
ultra / 1080p
5−6
16−18
QHD / 1440p
0−1
3−4
low / 720p
20−22
40−45
medium / 1080p
7−8
21−24
The average gaming FPS of GeForce GT 650M SLI in Battlefield 5 is 150% 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 GeForce GT 650M SLI.
low / 768p
110−120
180−190
medium / 768p
90−95
150−160
ultra / 1080p
45−50
80−85
QHD / 1440p
24−27
45−50
4K / 2160p
18−20
30−33
high / 768p
65−70
120−130
The average gaming FPS of GeForce GT 650M SLI in Counter-Strike: Global Offensive is 70% more, than GeForce GT 640.
low / 768p
70−75
55−60
ultra / 1080p
21−24
30−35
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640 in Cyberpunk 2077 is 4% more, than GeForce GT 650M SLI.
low / 768p
70−75
100−110
medium / 768p
50−55
80−85
ultra / 1080p
27−30
50−55
The average gaming FPS of GeForce GT 650M SLI in Dota 2 is 56% more, than GeForce GT 640.
high / 1080p
3−4
14−16
ultra / 1080p
3−4
12−14
4K / 2160p
2−3
5−6
low / 720p
14−16
30−35
medium / 1080p
4−5
14−16
The average gaming FPS of GeForce GT 650M SLI in Far Cry 5 is 220% more, than GeForce GT 640.
high / 1080p
10−12
21−24
ultra / 1080p
5−6
16−18
QHD / 1440p
2−3
−
low / 720p
50−55
85−90
medium / 1080p
16−18
40−45
The average gaming FPS of GeForce GT 650M SLI in Fortnite is 100% more, than GeForce GT 640.
high / 1080p
6−7
21−24
ultra / 1080p
−
16−18
QHD / 1440p
4−5
6−7
4K / 2160p
2−3
−
low / 720p
21−24
40−45
medium / 1080p
9−10
21−24
The average gaming FPS of GeForce GT 650M SLI in Forza Horizon 4 is 130% more, than GeForce GT 640.
low / 768p
45−50
75−80
medium / 768p
−
65−70
high / 1080p
7−8
21−24
ultra / 1080p
3−4
10−11
QHD / 1440p
0−1
1−2
medium / 720p
40−45
−
The average gaming FPS of GeForce GT 650M SLI in Grand Theft Auto V is 89% more, than GeForce GT 640.
high / 1080p
2−3
8−9
ultra / 1080p
0−1
6−7
4K / 2160p
0−1
2−3
low / 720p
8−9
21−24
medium / 1080p
4−5
10−11
The average gaming FPS of GeForce GT 650M SLI in Metro Exodus is 160% more, than GeForce GT 640.
low / 768p
80−85
100−110
ultra / 1080p
70−75
95−100
medium / 1080p
−
100−110
The average gaming FPS of GeForce GT 650M SLI in Minecraft is 31% more, than GeForce GT 640.
high / 1080p
−
20−22
ultra / 1080p
12−14
16−18
low / 720p
27−30
45−50
medium / 1080p
14−16
21−24
The average gaming FPS of GeForce GT 650M SLI in PLAYERUNKNOWN'S BATTLEGROUNDS is 61% more, than GeForce GT 640.
high / 1080p
6−7
12−14
ultra / 1080p
4−5
9−10
QHD / 1440p
0−1
0−1
low / 720p
7−8
21−24
medium / 1080p
−
14−16
The average gaming FPS of GeForce GT 650M SLI in Red Dead Redemption 2 is 150% more, than GeForce GT 640.
low / 768p
14−16
40−45
medium / 768p
10−11
27−30
high / 1080p
5−6
14−16
ultra / 1080p
4−5
9−10
4K / 2160p
0−1
7−8
The average gaming FPS of GeForce GT 650M SLI in The Witcher 3: Wild Hunt is 187% more, than GeForce GT 640.
low / 768p
70−75
95−100
medium / 768p
35−40
55−60
ultra / 1080p
16−18
30−33
high / 768p
30−35
45−50
The average gaming FPS of GeForce GT 650M SLI in World of Tanks is 48% more, than GeForce GT 640.
Full Specs
GeForce GT 640
GeForce GT 650M SLI
Architecture
Kepler
Kepler
Code name
GK107
N13E-GE
Type
Desktop
Laptop
Release date
5 June 2012
22 March 2012
Pipelines
384
768
Core clock speed
902 MHz
790 MHz
Boost Clock
835 MHz
Transistor count
1,270 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
2x 128 Bit
Memory clock speed
1782 MHz
4000 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
+
Bitcoin / BTC (SHA256)
24 Mh/s
Laptop size
medium sized
Optimus
+
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