Iris Plus Graphics 655 vs Radeon RX 640

When choosing between Iris Plus Graphics 655 and Radeon RX 640, 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 RX 640.

Iris Plus Graphics 655 and Radeon RX 640 are Laptop Graphics Cards

Note: Iris Plus Graphics 655 and Radeon RX 640 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 RX 640 here:

Main Specs

  Iris Plus Graphics 655 Radeon RX 640
Power consumption (TDP) 15 Watt 50 Watt
Interface PCIe 3.0 x1 PCIe 3.0 x8
Supplementary power connectors None
Memory type DDR3/DDR4 GDDR5
Maximum RAM amount 4 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon RX 640 has 233% more power consumption, than Iris Plus Graphics 655.
  • Iris Plus Graphics 655 is connected by PCIe 3.0 x1, and Radeon RX 640 uses PCIe 3.0 x8 interface.
  • Both cards are used in Laptops.
  • Iris Plus Graphics 655 is build with Gen. 9.5 Kaby Lake architecture, and Radeon RX 640 - with Polaris.
  • Core clock speed of Radeon RX 640 is 918 MHz higher, than Iris Plus Graphics 655.
  • Iris Plus Graphics 655 and Radeon RX 640 are manufactured by 14 nm process technology.

Game benchmarks

high / 1080p 12−14 5−6
ultra / 1080p 7−8 3−4
QHD / 1440p 2−3 2−3
low / 720p 27−30 16−18
medium / 1080p 16−18 7−8
The average gaming FPS of Iris Plus Graphics 655 in Assassin's Creed Odyssey is 85% more, than Radeon RX 640.

Full Specs

  Iris Plus Graphics 655 Radeon RX 640
Architecture Gen. 9.5 Kaby Lake Polaris
Code name Kaby Lake GT3e Polaris 12
Type Laptop Laptop
Release date 1 September 2017 12 August 2019
Pipelines 48 640
Core clock speed 300 MHz 1218 MHz
Boost Clock 1200 MHz 1218 MHz
Transistor count 189 million 2,200 million
Manufacturing process technology 14 nm 14 nm
Texture fill rate 50.40 38.98
Memory bus width 64 Bit
Memory clock speed 6000 MHz
Memory bandwidth 112.0 GB/s
Shared memory + -
DirectX 12 (12_1) 12 (12_0)
Shader Model 6.4 6.4
OpenGL 4.6 4.6
OpenCL 2.1 2.0
Vulkan 1.1.103 1.2.131
FreeSync +
Laptop size large
Quick Sync +
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