Iris Pro Graphics P580 vs Radeon HD 6850

When comparing Iris Pro Graphics P580 and Radeon HD 6850, 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 Iris Pro Graphics P580 and Radeon HD 6850 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Iris Pro Graphics P580 is a Laptop Graphics Card

Note: Iris Pro Graphics P580 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 Iris Pro Graphics P580 here:

Main Specs

  Iris Pro Graphics P580 Radeon HD 6850
Power consumption (TDP) 15 Watt 127 Watt
Interface PCIe 3.0 x1 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin
Memory type DDR3L/LPDDR3/DDR4 GDDR5
Maximum RAM amount 64 GB 1 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon HD 6850 has 746% more power consumption, than Iris Pro Graphics P580.
  • Iris Pro Graphics P580 is connected by PCIe 3.0 x1, and Radeon HD 6850 uses PCIe 2.0 x16 interface.
  • Iris Pro Graphics P580 has 63 GB more memory, than Radeon HD 6850.
  • Iris Pro Graphics P580 is used in Laptops, and Radeon HD 6850 - in Desktops.
  • Iris Pro Graphics P580 is build with Gen. 9 Skylake architecture, and Radeon HD 6850 - with TeraScale 2.
  • Iris Pro Graphics P580 is manufactured by 14 nm process technology, and Radeon HD 6850 - by 40 nm process technology.

Game benchmarks

high / 1080p 10−11 9−10
ultra / 1080p 6−7 5−6
QHD / 1440p 0−1 0−1
low / 720p 21−24 21−24
medium / 1080p 12−14 12−14
The average gaming FPS of Iris Pro Graphics P580 in Assassin's Creed Odyssey is 8% more, than Radeon HD 6850.

Full Specs

  Iris Pro Graphics P580 Radeon HD 6850
Architecture Gen. 9 Skylake TeraScale 2
Code name Skylake GT4e Barts
Type Laptop Desktop
Release date 1 September 2015 21 October 2010
Pipelines 72 960
Core clock speed 350 MHz
Boost Clock 1100 MHz
Transistor count 189 million 1,700 million
Manufacturing process technology 14 nm 40 nm
Texture fill rate 75.60 37.20
Floating-point performance 1,488.0 gflops
Length 198 mm
Memory bus width 256 Bit
Memory bandwidth 128.0 GB/s
Shared memory +
DirectX 12 (12_1)
Shader Model 6.4 5.0
OpenGL 4.6 4.4
OpenCL 2.1 1.2
Vulkan 1.1.97
Bus support AGP
Bitcoin / BTC (SHA256) 139 Mh/s
Eyefinity +
Design reference
CrossFire +
Quick Sync +
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