Iris Plus Graphics 640 vs Radeon HD 6990M

If you are going to buy a new graphics card and are choosing between Iris Plus Graphics 640 and Radeon HD 6990M, 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 Plus Graphics 640 stacks up against Radeon HD 6990M, check out specs charts below.

Iris Plus Graphics 640 and Radeon HD 6990M are Laptop Graphics Cards

Note: Iris Plus Graphics 640 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 640 or Radeon HD 6990M here:

Main Specs

  Iris Plus Graphics 640 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 DDR3L/LPDDR3/DDR4 GDDR5
Maximum RAM amount 32 GB 2 GB
Display Connectors No outputs No outputs
  Check Price Check Price
  • Radeon HD 6990M has 566% more power consumption, than Iris Plus Graphics 640.
  • Iris Plus Graphics 640 is connected by PCIe 3.0 x1, and Radeon HD 6990M uses MXM-B (3.0) interface.
  • Iris Plus Graphics 640 has 30 GB more memory, than Radeon HD 6990M.
  • Both cards are used in Laptops.
  • Iris Plus Graphics 640 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 640.
  • Iris Plus Graphics 640 is manufactured by 14 nm process technology, and Radeon HD 6990M - by 40 nm process technology.

Game benchmarks

high / 1080p 6−7 14−16
ultra / 1080p 4−5 8−9
QHD / 1440p 0−1 3−4
low / 720p 16−18 30−33
medium / 1080p 8−9 16−18
The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 100% more, than Iris Plus Graphics 640.

Full Specs

  Iris Plus Graphics 640 Radeon HD 6990M
Architecture Gen. 9.5 Kaby Lake Terascale 2
Code name Kaby Lake GT3e Blackcomb XTX
Type Laptop Laptop
Release date 3 January 2017 12 July 2011
Pipelines 48 1120
Core clock speed 300 MHz 715 MHz
Boost Clock 1050 MHz
Transistor count 189 million 1,700 million
Manufacturing process technology 14 nm 40 nm
Texture fill rate 52.80 40.04
Floating-point performance 1,601.6 gflops
Memory bus width 64/128 Bit 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 +
  Check Price Check Price