GeForce GT 640M LE vs GeForce GTX 580

In this comparison between GeForce GT 640M LE and GeForce GTX 580 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 GT 640M LE will be the best choice, for others GeForce GTX 580 will be their preference. Study the comparison tables below and make your choice.

GeForce GT 640M LE is a Laptop Graphics Card

Note: GeForce GT 640M LE 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 GT 640M LE here:

Main Specs

  GeForce GT 640M LE GeForce GTX 580
Power consumption (TDP) 20 Watt 244 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Supplementary power connectors One 6-pin and One 8-pin
Memory type DDR3\DDR5 GDDR5
Maximum RAM amount 2 GB 1536 MB
Display Connectors No outputs 2x DVI, 1x mini-HDMI
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  • GeForce GTX 580 has 1120% more power consumption, than GeForce GT 640M LE.
  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • GeForce GTX 580 has 1534 GB more memory, than GeForce GT 640M LE.
  • GeForce GT 640M LE is used in Laptops, and GeForce GTX 580 - in Desktops.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and GeForce GTX 580 - with Fermi.
  • GeForce GT 640M LE is manufactured by 28 nm process technology, and GeForce GTX 580 - by 40 nm process technology.
  • Memory clock speed of GeForce GTX 580 is 204 MHz higher, than GeForce GT 640M LE.

Game benchmarks

high / 1080p 0−1 21−24
ultra / 1080p 14−16
QHD / 1440p 0−1 8−9
4K / 2160p 6−7
low / 720p 1−2 40−45
medium / 1080p 0−1 27−30
The average gaming FPS of GeForce GTX 580 in Assassin's Creed Odyssey is 4100% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE GeForce GTX 580
Architecture Fermi / Kepler Fermi
Code name N13P-LP GF110
Type Laptop Desktop
Release date 22 March 2012 9 November 2010
Pipelines 384 512
Core clock speed 1544 MHz
Transistor count 585 million 3,000 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 49.4 billion/sec
Floating-point performance 384.0 gflops 1,581.1 gflops
Length 10.5" (267 mm) (26.7 cm)
Memory bus width 128bit 384 Bit
Memory clock speed 1800 - 4000 MHz 2004 MHz (4008 data rate)
Memory bandwidth 192.4 GB/s
Shared memory -
DirectX 12 API 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.5 4.2
OpenCL 1.1 1.1
Vulkan N/A N/A
CUDA + +
CUDA cores Up to 384 512
Bus support PCI Express 2.0, PCI Express 3.0 PCI-E 2.0 x 16
Height 4.376" (111 mm) (11.1 cm)
SLI options +
Multi monitor support +
HDMI + +
HDCP +
Maximum VGA resolution Up to 2048x1536 2048x1536
Audio input for HDMI Internal
3D Blu-Ray +
Bitcoin / BTC (SHA256) 14 Mh/s 142 Mh/s
Laptop size medium sized
Optimus +
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