GeForce GT 640M LE vs Iris Pro Graphics P580

When comparing GeForce GT 640M LE and Iris Pro Graphics P580, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GT 640M LE and Iris Pro Graphics P580 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

GeForce GT 640M LE and Iris Pro Graphics P580 are Laptop Graphics Cards

Note: GeForce GT 640M LE and Iris Pro Graphics P580 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 P580 here:

Main Specs

  GeForce GT 640M LE Iris Pro Graphics P580
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
  Check Price Check Price
  • GeForce GT 640M LE has 33% more power consumption, than Iris Pro Graphics P580.
  • GeForce GT 640M LE is connected by PCIe 2.0 x16, and Iris Pro Graphics P580 uses PCIe 3.0 x1 interface.
  • Iris Pro Graphics P580 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 P580 - with Gen. 9 Skylake.
  • GeForce GT 640M LE is manufactured by 28 nm process technology, and Iris Pro Graphics P580 - by 14 nm process technology.

Game benchmarks

high / 1080p 0−1 10−11
ultra / 1080p 6−7
QHD / 1440p 0−1 0−1
low / 720p 1−2 21−24
medium / 1080p 0−1 12−14
The average gaming FPS of Iris Pro Graphics P580 in Assassin's Creed Odyssey is 2100% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE Iris Pro Graphics P580
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 1100 MHz
Transistor count 585 million 189 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 75.60
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 +
  Check Price Check Price