GeForce 9800M GTS SLI vs GeForce GT 640

When choosing between GeForce 9800M GTS SLI and GeForce GT 640, 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 9800M GTS SLI and GeForce GT 640.

GeForce 9800M GTS SLI is a Laptop Graphics Card

Note: GeForce 9800M GTS 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 GTS SLI here:

Main Specs

  GeForce 9800M GTS SLI GeForce GT 640
Power consumption (TDP) 150 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 GTS SLI has 130% more power consumption, than GeForce GT 640.
  • GeForce 9800M GTS SLI has 510 GB more memory, than GeForce GT 640.
  • GeForce 9800M GTS SLI is used in Laptops, and GeForce GT 640 - in Desktops.
  • GeForce 9800M GTS SLI is build with G9x architecture, and GeForce GT 640 - with Kepler.
  • Core clock speed of GeForce GT 640 is 302 MHz higher, than GeForce 9800M GTS SLI.
  • GeForce 9800M GTS SLI is manufactured by 55/65 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 GTS SLI.

Game benchmarks

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 GTS SLI in Assassin's Creed Odyssey is 16% more, than GeForce GT 640.

Full Specs

  GeForce 9800M GTS SLI GeForce GT 640
Architecture G9x Kepler
Code name NB9E-GT GK107
Type Laptop Desktop
Release date 15 July 2008 5 June 2012
Pipelines 128 384
Core clock speed 600 MHz 902 MHz
Transistor count 1508 Million 1,270 million
Manufacturing process technology 55/65 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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