GeForce 9800M GT SLI vs GeForce GT 640
In this comparison between GeForce 9800M GT SLI and GeForce GT 640 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 9800M GT SLI will be the best choice, for others GeForce GT 640 will be their preference. Study the comparison tables below and make your choice.
GeForce 9800M GT SLI is a Laptop Graphics Card
Note: GeForce 9800M GT 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 9800M GT SLI here:
Main Specs
GeForce 9800M GT 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 9800M GT SLI has 100% more power consumption, than GeForce GT 640.
GeForce 9800M GT SLI has 510 GB more memory, than GeForce GT 640.
GeForce 9800M GT SLI is used in Laptops, and GeForce GT 640 - in Desktops.
GeForce 9800M GT 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 9800M GT SLI.
GeForce 9800M GT 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 9800M GT 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
5−6
2−3
ultra / 1080p
3−4
1−2
QHD / 1440p
0−1
0−1
low / 720p
14−16
14−16
medium / 1080p
7−8
5−6
The average gaming FPS of GeForce 9800M GT SLI in Assassin's Creed Odyssey is 16% more, than GeForce GT 640.
high / 1080p
10−11
7−8
ultra / 1080p
9−10
5−6
QHD / 1440p
0−1
0−1
low / 720p
21−24
20−22
medium / 1080p
10−11
7−8
The average gaming FPS of GeForce 9800M GT 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 9800M GT SLI in Call of Duty: Warzone is 4% more, than GeForce GT 640.
low / 768p
120−130
110−120
medium / 768p
100−105
90−95
ultra / 1080p
45−50
45−50
QHD / 1440p
24−27
24−27
4K / 2160p
−
18−20
high / 768p
70−75
65−70
The average gaming FPS of GeForce 9800M GT SLI in Counter-Strike: Global Offensive is 7% more, than GeForce GT 640.
low / 768p
55−60
70−75
ultra / 1080p
16−18
21−24
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640 in Cyberpunk 2077 is 17% more, than GeForce 9800M GT SLI.
low / 768p
75−80
70−75
medium / 768p
50−55
50−55
ultra / 1080p
30−33
27−30
The average gaming FPS of GeForce 9800M GT SLI in Dota 2 is 3% more, than GeForce GT 640.
high / 1080p
7−8
3−4
ultra / 1080p
6−7
3−4
4K / 2160p
3−4
2−3
low / 720p
16−18
14−16
medium / 1080p
7−8
4−5
The average gaming FPS of GeForce 9800M GT SLI in Far Cry 5 is 60% more, than GeForce GT 640.
high / 1080p
14−16
10−12
ultra / 1080p
9−10
5−6
QHD / 1440p
−
2−3
low / 720p
55−60
50−55
medium / 1080p
18−20
16−18
The average gaming FPS of GeForce 9800M GT SLI in Fortnite is 19% more, than GeForce GT 640.
high / 1080p
10−12
6−7
ultra / 1080p
10−11
−
QHD / 1440p
0−1
4−5
4K / 2160p
−
2−3
low / 720p
21−24
21−24
medium / 1080p
12−14
9−10
The average gaming FPS of GeForce 9800M GT SLI in Forza Horizon 4 is 25% more, than GeForce GT 640.
low / 768p
45−50
45−50
medium / 768p
40−45
−
high / 1080p
10−11
7−8
ultra / 1080p
6−7
3−4
QHD / 1440p
0−1
0−1
medium / 720p
−
40−45
The average gaming FPS of GeForce 9800M GT SLI in Grand Theft Auto V is 10% 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
10−11
8−9
medium / 1080p
6−7
4−5
The average gaming FPS of GeForce 9800M GT 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 9800M GT SLI in Minecraft is 10% more, than GeForce GT 640.
high / 1080p
16−18
−
ultra / 1080p
14−16
12−14
low / 720p
27−30
27−30
medium / 1080p
16−18
14−16
The average gaming FPS of GeForce 9800M GT SLI in PLAYERUNKNOWN'S BATTLEGROUNDS is 11% more, than GeForce GT 640.
high / 1080p
−
6−7
ultra / 1080p
7−8
4−5
QHD / 1440p
0−1
0−1
low / 720p
10−11
7−8
The average gaming FPS of GeForce 9800M GT SLI in Red Dead Redemption 2 is 50% more, than GeForce GT 640.
low / 768p
21−24
14−16
medium / 768p
14−16
10−11
high / 1080p
8−9
5−6
ultra / 1080p
6−7
4−5
4K / 2160p
−
0−1
The average gaming FPS of GeForce 9800M GT SLI in The Witcher 3: Wild Hunt is 62% more, than GeForce GT 640.
low / 768p
80−85
70−75
medium / 768p
40−45
35−40
ultra / 1080p
16−18
16−18
high / 768p
30−35
30−35
The average gaming FPS of GeForce 9800M GT SLI in World of Tanks is 10% more, than GeForce GT 640.
Full Specs
GeForce 9800M GT SLI
GeForce GT 640
Architecture
G9x
Kepler
Code name
NB9E-GT2
GK107
Type
Laptop
Desktop
Release date
15 July 2008
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
SLI options
+
Bitcoin / BTC (SHA256)
24 Mh/s
Laptop size
large
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