GeForce GT 640M LE vs Iris Pro Graphics 580

In this comparison between GeForce GT 640M LE and Iris Pro Graphics 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 Iris Pro Graphics 580 will be their preference. Study the comparison tables below and make your choice.

GeForce GT 640M LE and Iris Pro Graphics 580 are Laptop Graphics Cards

Note: GeForce GT 640M LE and Iris Pro Graphics 580 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 GT 640M LE or Iris Pro Graphics 580 here:

Main Specs

  GeForce GT 640M LE Iris Pro Graphics 580
Power consumption (TDP) 20 Watt 15 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x1
Memory type DDR3\DDR5 DDR3L/LPDDR3/DDR4
Maximum RAM amount 2 GB 64 GB
Display Connectors No outputs No outputs
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  • GeForce GT 640M LE has 33% more power consumption, than Iris Pro Graphics 580.
  • GeForce GT 640M LE is connected by PCIe 2.0 x16, and Iris Pro Graphics 580 uses PCIe 3.0 x1 interface.
  • Iris Pro Graphics 580 has 62 GB more memory, than GeForce GT 640M LE.
  • Both cards are used in Laptops.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Iris Pro Graphics 580 - with Gen. 9 Skylake.
  • GeForce GT 640M LE is manufactured by 28 nm process technology, and Iris Pro Graphics 580 - by 14 nm process technology.

Game benchmarks

high / 1080p 0−1 9−10
ultra / 1080p 5−6
QHD / 1440p 0−1 0−1
low / 720p 1−2 20−22
medium / 1080p 0−1 10−12
The average gaming FPS of Iris Pro Graphics 580 in Assassin's Creed Odyssey is 2000% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE Iris Pro Graphics 580
Architecture Fermi / Kepler Gen. 9 Skylake
Code name N13P-LP Skylake GT4e
Type Laptop Laptop
Release date 22 March 2012 1 September 2015
Pipelines 384 72
Core clock speed 350 MHz
Boost Clock 1050 MHz
Transistor count 585 million 189 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 72.00
Floating-point performance 384.0 gflops
Memory bus width 128bit
Memory clock speed 1800 - 4000 MHz
Shared memory - +
DirectX 12 API 12 (12_1)
Shader Model 5.1 6.4
OpenGL 4.5 4.6
OpenCL 1.1 2.1
Vulkan N/A 1.1.97
CUDA +
CUDA cores Up to 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) 14 Mh/s
Laptop size medium sized
Optimus +
Quick Sync +
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