Iris Pro Graphics P580 vs Mobility Radeon HD 4870 X2

If you are going to buy a new graphics card and are choosing between Iris Pro Graphics P580 and Mobility Radeon HD 4870 X2, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Iris Pro Graphics P580 stacks up against Mobility Radeon HD 4870 X2, check out specs charts below.

Iris Pro Graphics P580 and Mobility Radeon HD 4870 X2 are Laptop Graphics Cards

Note: Iris Pro Graphics P580 and Mobility Radeon HD 4870 X2 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 Iris Pro Graphics P580 or Mobility Radeon HD 4870 X2 here:

Main Specs

  Iris Pro Graphics P580 Mobility Radeon HD 4870 X2
Power consumption (TDP) 15 Watt
Interface PCIe 3.0 x1 PCIe 2.0 x16
Memory type DDR3L/LPDDR3/DDR4 GDDR3, GDDR5
Maximum RAM amount 64 GB 2 GB
Display Connectors No outputs No outputs
  Check Price Check Price
  • Iris Pro Graphics P580 is connected by PCIe 3.0 x1, and Mobility Radeon HD 4870 X2 uses PCIe 2.0 x16 interface.
  • Iris Pro Graphics P580 has 62 GB more memory, than Mobility Radeon HD 4870 X2.
  • Both cards are used in Laptops.
  • Iris Pro Graphics P580 is build with Gen. 9 Skylake architecture, and Mobility Radeon HD 4870 X2 - with Terascale 1.
  • Core clock speed of Mobility Radeon HD 4870 X2 is 200 MHz higher, than Iris Pro Graphics P580.
  • Iris Pro Graphics P580 is manufactured by 14 nm process technology, and Mobility Radeon HD 4870 X2 - by 55 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 Mobility Radeon HD 4870 X2.

Full Specs

  Iris Pro Graphics P580 Mobility Radeon HD 4870 X2
Architecture Gen. 9 Skylake Terascale 1
Code name Skylake GT4e M98-XT
Type Laptop Laptop
Release date 1 September 2015 9 January 2009
Pipelines 72 1600
Core clock speed 350 MHz 550 MHz
Boost Clock 1100 MHz
Transistor count 189 million 956 million
Manufacturing process technology 14 nm 55 nm
Texture fill rate 75.60 22.00
Floating-point performance 2x 880.0 gflops
Memory bus width 256 Bit
Memory clock speed 888 MHz
Memory bandwidth 89.6 GB/s
Shared memory + -
DirectX 12 (12_1) 10.1 (10_1)
Shader Model 6.4 4.1
OpenGL 4.6 3.3
OpenCL 2.1 1.1
Vulkan 1.1.97 N/A
Laptop size large
Quick Sync +
  Check Price Check Price