Iris Plus Graphics 645 vs Radeon Pro 555

Find out if it is worth upgrading your current GPU setup by comparing Iris Plus Graphics 645 and Radeon Pro 555. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Iris Plus Graphics 645 and Radeon Pro 555. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Iris Plus Graphics 645 and Radeon Pro 555 are Laptop Graphics Cards

Note: Iris Plus Graphics 645 and Radeon Pro 555 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 645 or Radeon Pro 555 here:

Main Specs

  Iris Plus Graphics 645 Radeon Pro 555
Power consumption (TDP) 15 Watt 75 Watt
Interface PCIe 3.0 x1 PCIe 3.0 x8
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 Pro 555 has 400% more power consumption, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon Pro 555 uses PCIe 3.0 x8 interface.
  • Iris Plus Graphics 645 is used in Laptops, and Radeon Pro 555 - in Mobile workstations.
  • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon Pro 555 - with Polaris.
  • Core clock speed of Radeon Pro 555 is 555 MHz higher, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 and Radeon Pro 555 are manufactured by 14 nm process technology.

Game benchmarks

high / 1080p 4−5 16−18
ultra / 1080p 2−3 9−10
QHD / 1440p 0−1 4−5
4K / 2160p 4−5
low / 720p 12−14 30−35
medium / 1080p 5−6 20−22
The average gaming FPS of Radeon Pro 555 in Assassin's Creed Odyssey is 233% more, than Iris Plus Graphics 645.

Full Specs

  Iris Plus Graphics 645 Radeon Pro 555
Architecture Gen. 9.5 Coffee Lake Polaris
Code name Kaby Lake GT3e Polaris 21
Type Laptop Mobile workstation
Release date 10 July 2019 5 June 2017
Pipelines 48 768
Core clock speed 300 MHz 855 MHz
Boost Clock 1150 MHz
Transistor count 3,000 million
Manufacturing process technology 14 nm 14 nm
Texture fill rate 50.40 40.80
Floating-point performance 1,306 gflops
Memory bus width 128 Bit
Memory clock speed 5080 MHz
Memory bandwidth 81.6 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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