GeForce GT 640 vs GeForce GTX 680M SLI
When comparing GeForce GT 640 and GeForce GTX 680M SLI, 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 GT 640 and GeForce GTX 680M SLI is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
GeForce GTX 680M SLI is a Laptop Graphics Card
Note: GeForce GTX 680M 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 GTX 680M SLI here:
Main Specs
GeForce GT 640
GeForce GTX 680M SLI
Power consumption (TDP)
65 Watt
Interface
PCIe 3.0 x16
Supplementary power connectors
None
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
2x 4 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
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GeForce GT 640 and GeForce GTX 680M SLI have maximum RAM of 2 GB.
GeForce GT 640 is used in Desktops, and GeForce GTX 680M SLI - in Laptops.
GeForce GT 640 and GeForce GTX 680M SLI are build with Kepler architecture.
Core clock speed of GeForce GT 640 is 182 MHz higher, than GeForce GTX 680M SLI.
GeForce GT 640 and GeForce GTX 680M SLI are manufactured by 28 nm process technology.
Memory clock speed of GeForce GTX 680M SLI 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
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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI 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 GeForce GTX 680M SLI in World of Tanks is 71% more, than GeForce GT 640.
Full Specs
GeForce GT 640
GeForce GTX 680M SLI
Architecture
Kepler
Kepler
Code name
GK107
N13E-GTX
Type
Desktop
Laptop
Release date
5 June 2012
4 June 2012
Pipelines
384
2688
Core clock speed
902 MHz
720 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 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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