GeForce 8800M GTX SLI vs GeForce GT 640
If you are going to buy a new graphics card and are choosing between GeForce 8800M GTX SLI and GeForce GT 640, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce 8800M GTX SLI stacks up against GeForce GT 640, check out specs charts below.
GeForce 8800M GTX SLI is a Laptop Graphics Card
Note: GeForce 8800M GTX 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 8800M GTX SLI here:
Main Specs
GeForce 8800M GTX SLI
GeForce GT 640
Power consumption (TDP)
130 Watt
65 Watt
Interface
PCIe 3.0 x16
Supplementary power connectors
None
Memory type
GDDR3
DDR3
Maximum RAM amount
512 MB
2 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
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GeForce 8800M GTX SLI has 100% more power consumption, than GeForce GT 640.
GeForce 8800M GTX SLI has 510 GB more memory, than GeForce GT 640.
GeForce 8800M GTX SLI is used in Laptops, and GeForce GT 640 - in Desktops.
GeForce 8800M GTX SLI is build with G9x architecture, and GeForce GT 640 - with Kepler.
Core clock speed of GeForce GT 640 is 402 MHz higher, than GeForce 8800M GTX SLI.
GeForce 8800M GTX SLI is manufactured by 65 nm process technology, and GeForce GT 640 - by 28 nm process technology.
Memory clock speed of GeForce GT 640 is 982 MHz higher, than GeForce 8800M GTX SLI.
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
6−7
2−3
ultra / 1080p
4−5
1−2
QHD / 1440p
0−1
0−1
low / 720p
16−18
14−16
medium / 1080p
7−8
5−6
The average gaming FPS of GeForce 8800M GTX SLI in Assassin's Creed Odyssey is 33% more, than GeForce GT 640.
high / 1080p
10−12
7−8
ultra / 1080p
9−10
5−6
QHD / 1440p
0−1
0−1
low / 720p
21−24
20−22
medium / 1080p
10−12
7−8
The average gaming FPS of GeForce 8800M GTX SLI in Battlefield 5 is 30% 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 8800M GTX SLI in Call of Duty: Warzone is 4% more, than GeForce GT 640.
low / 768p
130−140
110−120
medium / 768p
100−110
90−95
ultra / 1080p
50−55
45−50
QHD / 1440p
27−30
24−27
4K / 2160p
−
18−20
high / 768p
75−80
65−70
The average gaming FPS of GeForce 8800M GTX SLI in Counter-Strike: Global Offensive is 14% more, than GeForce GT 640.
low / 768p
55−60
70−75
ultra / 1080p
18−20
21−24
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640 in Cyberpunk 2077 is 14% more, than GeForce 8800M GTX SLI.
low / 768p
75−80
70−75
medium / 768p
55−60
50−55
ultra / 1080p
30−35
27−30
The average gaming FPS of GeForce 8800M GTX SLI in Dota 2 is 7% more, than GeForce GT 640.
high / 1080p
7−8
3−4
ultra / 1080p
7−8
3−4
4K / 2160p
3−4
2−3
low / 720p
16−18
14−16
medium / 1080p
8−9
4−5
The average gaming FPS of GeForce 8800M GTX SLI in Far Cry 5 is 60% more, than GeForce GT 640.
high / 1080p
14−16
10−12
ultra / 1080p
10−11
5−6
QHD / 1440p
−
2−3
low / 720p
55−60
50−55
medium / 1080p
21−24
16−18
The average gaming FPS of GeForce 8800M GTX SLI in Fortnite is 23% more, than GeForce GT 640.
high / 1080p
10−12
6−7
ultra / 1080p
10−11
−
QHD / 1440p
1−2
4−5
4K / 2160p
−
2−3
low / 720p
24−27
21−24
medium / 1080p
12−14
9−10
The average gaming FPS of GeForce 8800M GTX SLI in Forza Horizon 4 is 20% more, than GeForce GT 640.
low / 768p
50−55
45−50
medium / 768p
40−45
−
high / 1080p
10−12
7−8
ultra / 1080p
6−7
3−4
QHD / 1440p
0−1
0−1
medium / 720p
−
40−45
The average gaming FPS of GeForce 8800M GTX SLI in Grand Theft Auto V is 21% more, than GeForce GT 640.
high / 1080p
4−5
2−3
ultra / 1080p
3−4
0−1
4K / 2160p
0−1
0−1
low / 720p
10−12
8−9
medium / 1080p
6−7
4−5
The average gaming FPS of GeForce 8800M GTX SLI in Metro Exodus is 40% more, than GeForce GT 640.
low / 768p
90−95
80−85
high / 1080p
85−90
−
ultra / 1080p
75−80
70−75
medium / 1080p
90−95
−
The average gaming FPS of GeForce 8800M GTX SLI in Minecraft is 10% more, than GeForce GT 640.
high / 1080p
16−18
−
ultra / 1080p
14−16
12−14
low / 720p
30−35
27−30
medium / 1080p
16−18
14−16
The average gaming FPS of GeForce 8800M GTX SLI in PLAYERUNKNOWN'S BATTLEGROUNDS is 16% more, than GeForce GT 640.
high / 1080p
−
6−7
ultra / 1080p
7−8
4−5
QHD / 1440p
0−1
0−1
low / 720p
10−12
7−8
medium / 1080p
10−11
−
The average gaming FPS of GeForce 8800M GTX SLI in Red Dead Redemption 2 is 50% more, than GeForce GT 640.
low / 768p
21−24
14−16
medium / 768p
16−18
10−11
high / 1080p
8−9
5−6
ultra / 1080p
6−7
4−5
4K / 2160p
−
0−1
The average gaming FPS of GeForce 8800M GTX SLI in The Witcher 3: Wild Hunt is 62% more, than GeForce GT 640.
low / 768p
85−90
70−75
medium / 768p
40−45
35−40
ultra / 1080p
18−20
16−18
high / 768p
35−40
30−35
The average gaming FPS of GeForce 8800M GTX SLI in World of Tanks is 17% more, than GeForce GT 640.
Full Specs
GeForce 8800M GTX SLI
GeForce GT 640
Architecture
G9x
Kepler
Code name
NB8E-GTX
GK107
Type
Laptop
Desktop
Release date
19 November 2007
5 June 2012
Pipelines
192
384
Core clock speed
500 MHz
902 MHz
Transistor count
1508 Million
1,270 million
Manufacturing process technology
65 nm
28 nm
Texture fill rate
28.86
Floating-point performance
692.7 gflops
Length
145 mm
Memory bus width
256 Bit
128 Bit
Memory clock speed
800 MHz
1782 MHz
Memory bandwidth
28.51 GB/s
Shared memory
-
DirectX
DirectX 10, Shader 4.0
12 (11_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
large
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