GeForce 845M vs Iris Pro Graphics 580

In this comparison between GeForce 845M 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 845M 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 845M and Iris Pro Graphics 580 are Laptop Graphics Cards

Note: GeForce 845M 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 845M or Iris Pro Graphics 580 here:

Main Specs

  GeForce 845M Iris Pro Graphics 580
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 580.
  • GeForce 845M is connected by PCIe 3.0 x8, and Iris Pro Graphics 580 uses PCIe 3.0 x1 interface.
  • Iris Pro Graphics 580 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 580 - with Gen. 9 Skylake.
  • Core clock speed of GeForce 845M is 721 MHz higher, than Iris Pro Graphics 580.
  • GeForce 845M is manufactured by 28 nm process technology, and Iris Pro Graphics 580 - by 14 nm process technology.

Game benchmarks

high / 1080p 3−4 9−10
ultra / 1080p 1−2 5−6
QHD / 1440p 0−1 0−1
low / 720p 14−16 20−22
medium / 1080p 6−7 10−12
The average gaming FPS of Iris Pro Graphics 580 in Assassin's Creed Odyssey is 83% more, than GeForce 845M.

Full Specs

  GeForce 845M Iris Pro Graphics 580
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 1050 MHz
Transistor count 1,870 million 189 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 37.63 72.00
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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