GeForce 8800M GTX SLI vs GeForce GT 640M
In this comparison between GeForce 8800M GTX SLI and GeForce GT 640M 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 8800M GTX SLI will be the best choice, for others GeForce GT 640M will be their preference. Study the comparison tables below and make your choice.
GeForce 8800M GTX SLI and GeForce GT 640M are Laptop Graphics Cards
Note: GeForce 8800M GTX SLI and GeForce GT 640M are only used in laptop graphics. They have 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 or GeForce GT 640M here:
Main Specs
GeForce 8800M GTX SLI
GeForce GT 640M
Power consumption (TDP)
130 Watt
32 Watt
Interface
PCIe 3.0 x16
Memory type
GDDR3
DDR3\GDDR5
Maximum RAM amount
512 MB
2 GB
Display Connectors
No outputs
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GeForce 8800M GTX SLI has 306% more power consumption, than GeForce GT 640M.
GeForce 8800M GTX SLI has 510 GB more memory, than GeForce GT 640M.
Both cards are used in Laptops.
GeForce 8800M GTX SLI is build with G9x architecture, and GeForce GT 640M - with Kepler.
GeForce 8800M GTX SLI is manufactured by 65 nm process technology, and GeForce GT 640M - by 28 nm process technology.
Memory clock speed of GeForce GT 640M is 1000 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
0−1
ultra / 1080p
4−5
0−1
QHD / 1440p
0−1
0−1
low / 720p
16−18
10−12
medium / 1080p
7−8
2−3
The average gaming FPS of GeForce 8800M GTX SLI in Assassin's Creed Odyssey is 100% more, than GeForce GT 640M.
high / 1080p
10−12
−
ultra / 1080p
9−10
3−4
QHD / 1440p
0−1
0−1
low / 720p
21−24
12−14
medium / 1080p
10−12
4−5
The average gaming FPS of GeForce 8800M GTX SLI in Battlefield 5 is 100% more, than GeForce GT 640M.
low / 768p
45−50
50−55
high / 1080p
45−50
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GT 640M in Call of Duty: Warzone is 6% more, than GeForce 8800M GTX SLI.
low / 768p
130−140
110−120
medium / 768p
100−110
85−90
ultra / 1080p
50−55
35−40
QHD / 1440p
27−30
−
4K / 2160p
−
10−11
high / 768p
75−80
55−60
The average gaming FPS of GeForce 8800M GTX SLI in Counter-Strike: Global Offensive is 24% more, than GeForce GT 640M.
low / 768p
55−60
70−75
ultra / 1080p
18−20
12−14
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640M in Cyberpunk 2077 is 7% more, than GeForce 8800M GTX SLI.
low / 768p
75−80
70−75
medium / 768p
55−60
40−45
ultra / 1080p
30−35
18−20
The average gaming FPS of GeForce 8800M GTX SLI in Dota 2 is 25% more, than GeForce GT 640M.
high / 1080p
7−8
2−3
ultra / 1080p
7−8
2−3
4K / 2160p
3−4
0−1
low / 720p
16−18
9−10
medium / 1080p
8−9
3−4
The average gaming FPS of GeForce 8800M GTX SLI in Far Cry 5 is 150% more, than GeForce GT 640M.
high / 1080p
14−16
−
ultra / 1080p
10−11
5−6
QHD / 1440p
−
1−2
low / 720p
55−60
45−50
medium / 1080p
21−24
7−8
The average gaming FPS of GeForce 8800M GTX SLI in Fortnite is 50% more, than GeForce GT 640M.
high / 1080p
10−12
2−3
ultra / 1080p
10−11
−
QHD / 1440p
1−2
0−1
low / 720p
24−27
14−16
medium / 1080p
12−14
5−6
The average gaming FPS of GeForce 8800M GTX SLI in Forza Horizon 4 is 128% more, than GeForce GT 640M.
low / 768p
50−55
40−45
medium / 768p
40−45
−
high / 1080p
10−12
3−4
ultra / 1080p
6−7
2−3
QHD / 1440p
0−1
0−1
medium / 720p
−
30−35
The average gaming FPS of GeForce 8800M GTX SLI in Grand Theft Auto V is 43% more, than GeForce GT 640M.
high / 1080p
4−5
1−2
ultra / 1080p
3−4
0−1
4K / 2160p
0−1
0−1
low / 720p
10−12
2−3
medium / 1080p
6−7
2−3
The average gaming FPS of GeForce 8800M GTX SLI in Metro Exodus is 250% more, than GeForce GT 640M.
low / 768p
90−95
85−90
high / 1080p
85−90
55−60
ultra / 1080p
75−80
−
medium / 1080p
90−95
−
The average gaming FPS of GeForce 8800M GTX SLI in Minecraft is 25% more, than GeForce GT 640M.
high / 1080p
16−18
14−16
ultra / 1080p
14−16
12−14
low / 720p
30−35
24−27
medium / 1080p
16−18
14−16
The average gaming FPS of GeForce 8800M GTX SLI in PLAYERUNKNOWN'S BATTLEGROUNDS is 17% more, than GeForce GT 640M.
ultra / 1080p
7−8
3−4
QHD / 1440p
0−1
0−1
low / 720p
10−12
3−4
medium / 1080p
10−11
−
The average gaming FPS of GeForce 8800M GTX SLI in Red Dead Redemption 2 is 200% more, than GeForce GT 640M.
low / 768p
21−24
7−8
medium / 768p
16−18
6−7
high / 1080p
8−9
3−4
ultra / 1080p
6−7
−
4K / 2160p
−
0−1
The average gaming FPS of GeForce 8800M GTX SLI in The Witcher 3: Wild Hunt is 220% more, than GeForce GT 640M.
low / 768p
85−90
70−75
medium / 768p
40−45
35−40
ultra / 1080p
18−20
12−14
high / 768p
35−40
27−30
The average gaming FPS of GeForce 8800M GTX SLI in World of Tanks is 24% more, than GeForce GT 640M.
Full Specs
GeForce 8800M GTX SLI
GeForce GT 640M
Architecture
G9x
Kepler
Code name
NB8E-GTX
N13P-GS
Type
Laptop
Laptop
Release date
19 November 2007
22 March 2012
Pipelines
192
384
Core clock speed
500 MHz
Boost Clock
645 MHz
Transistor count
1508 Million
1,270 million
Manufacturing process technology
65 nm
28 nm
Floating-point performance
480.0 gflops
Memory bus width
256 Bit
128bit
Memory clock speed
800 MHz
1800 - 4000 MHz
Shared memory
-
-
DirectX
DirectX 10, Shader 4.0
12 API
Shader Model
5.1
OpenGL
4.5
OpenCL
1.1
Vulkan
1.1.126
CUDA
+
CUDA cores
384
Bus support
PCI Express 2.0, PCI Express 3.0
HDMI
+
HDCP
+
Maximum VGA resolution
Up to 2048x1536
3D Blu-Ray
+
Bitcoin / BTC (SHA256)
18 Mh/s
Laptop size
large
medium sized
Optimus
+
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