GeForce 845M vs Iris Pro Graphics P580

When comparing GeForce 845M 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 845M 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 845M and Iris Pro Graphics P580 are Laptop Graphics Cards

Note: GeForce 845M 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 845M or Iris Pro Graphics P580 here:

Main Specs

  GeForce 845M Iris Pro Graphics P580
Power consumption (TDP) 45 Watt 15 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x1
Memory type DDR3, GDDR5 DDR3L/LPDDR3/DDR4
Maximum RAM amount 2 GB 64 GB
Display Connectors No outputs No outputs
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  • GeForce 845M has 200% more power consumption, than Iris Pro Graphics P580.
  • GeForce 845M is connected by PCIe 3.0 x8, and Iris Pro Graphics P580 uses PCIe 3.0 x1 interface.
  • Iris Pro Graphics P580 has 62 GB more memory, than GeForce 845M.
  • Both cards are used in Laptops.
  • GeForce 845M is build with Maxwell architecture, and Iris Pro Graphics P580 - with Gen. 9 Skylake.
  • Core clock speed of GeForce 845M is 721 MHz higher, than Iris Pro Graphics P580.
  • GeForce 845M is manufactured by 28 nm process technology, and Iris Pro Graphics P580 - by 14 nm process technology.

Game benchmarks

high / 1080p 3−4 10−11
ultra / 1080p 1−2 6−7
QHD / 1440p 0−1 0−1
low / 720p 14−16 21−24
medium / 1080p 6−7 12−14
The average gaming FPS of Iris Pro Graphics P580 in Assassin's Creed Odyssey is 116% more, than GeForce 845M.

Full Specs

  GeForce 845M Iris Pro Graphics P580
Architecture Maxwell Gen. 9 Skylake
Code name GM108 Skylake GT4e
Type Laptop Laptop
Release date 12 March 2014 1 September 2015
Pipelines 384 72
Core clock speed 1071 MHz 350 MHz
Boost Clock 1150 MHz 1100 MHz
Transistor count 1,870 million 189 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 37.63 75.60
Floating-point performance 883.7 gflops
Memory bus width 64/128 Bit
Memory clock speed 2000 - 5000 MHz
Memory bandwidth 40.1 GB/s
Shared memory - +
DirectX 12 (11_0) 12 (12_1)
Shader Model 5.1 6.4
OpenGL 4.6 4.6
OpenCL 1.2 2.1
Vulkan 1.1.126 1.1.97
CUDA +
Bitcoin / BTC (SHA256) 76 Mh/s
Laptop size medium sized
Optimus +
Quick Sync +
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