Iris Plus Graphics 655 vs Radeon HD 6990M

When choosing between Iris Plus Graphics 655 and Radeon HD 6990M, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between Iris Plus Graphics 655 and Radeon HD 6990M.

Iris Plus Graphics 655 and Radeon HD 6990M are Laptop Graphics Cards

Note: Iris Plus Graphics 655 and Radeon HD 6990M 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 Plus Graphics 655 or Radeon HD 6990M here:

Main Specs

  Iris Plus Graphics 655 Radeon HD 6990M
Power consumption (TDP) 15 Watt 100 Watt
Interface PCIe 3.0 x1 MXM-B (3.0)
Supplementary power connectors None
Memory type DDR3/DDR4 GDDR5
Maximum RAM amount 2 GB
Display Connectors No outputs No outputs
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  • Radeon HD 6990M has 566% more power consumption, than Iris Plus Graphics 655.
  • Iris Plus Graphics 655 is connected by PCIe 3.0 x1, and Radeon HD 6990M uses MXM-B (3.0) interface.
  • Both cards are used in Laptops.
  • Iris Plus Graphics 655 is build with Gen. 9.5 Kaby Lake architecture, and Radeon HD 6990M - with Terascale 2.
  • Core clock speed of Radeon HD 6990M is 415 MHz higher, than Iris Plus Graphics 655.
  • Iris Plus Graphics 655 is manufactured by 14 nm process technology, and Radeon HD 6990M - by 40 nm process technology.

Game benchmarks

high / 1080p 12−14 14−16
ultra / 1080p 7−8 8−9
QHD / 1440p 2−3 3−4
low / 720p 27−30 30−33
medium / 1080p 16−18 16−18
The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 15% more, than Iris Plus Graphics 655.

Full Specs

  Iris Plus Graphics 655 Radeon HD 6990M
Architecture Gen. 9.5 Kaby Lake Terascale 2
Code name Kaby Lake GT3e Blackcomb XTX
Type Laptop Laptop
Release date 1 September 2017 12 July 2011
Pipelines 48 1120
Core clock speed 300 MHz 715 MHz
Boost Clock 1200 MHz
Transistor count 189 million 1,700 million
Manufacturing process technology 14 nm 40 nm
Texture fill rate 50.40 40.04
Floating-point performance 1,601.6 gflops
Memory bus width 256 Bit
Memory clock speed 900 MHz
Memory bandwidth 115.2 GB/s
Shared memory + -
DirectX 12 (12_1) 11.2 (11_0)
Shader Model 6.4 5.0
OpenGL 4.6 4.4
OpenCL 2.1 1.2
Vulkan 1.1.103 N/A
Laptop size large
Quick Sync +
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