Iris Plus Graphics 645 vs Radeon Pro 455

In this comparison between Iris Plus Graphics 645 and Radeon Pro 455 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Iris Plus Graphics 645 will be the best choice, for others Radeon Pro 455 will be their preference. Study the comparison tables below and make your choice.

Iris Plus Graphics 645 and Radeon Pro 455 are Laptop Graphics Cards

Note: Iris Plus Graphics 645 and Radeon Pro 455 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 455 here:

Main Specs

  Iris Plus Graphics 645 Radeon Pro 455
Power consumption (TDP) 15 Watt 35 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
  Check Price Check Price
  • Radeon Pro 455 has 133% more power consumption, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon Pro 455 uses PCIe 3.0 x8 interface.
  • Iris Plus Graphics 645 is used in Laptops, and Radeon Pro 455 - in Mobile workstations.
  • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon Pro 455 - with Polaris.
  • Core clock speed of Radeon Pro 455 is 555 MHz higher, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 and Radeon Pro 455 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 455 in Assassin's Creed Odyssey is 233% more, than Iris Plus Graphics 645.

Full Specs

  Iris Plus Graphics 645 Radeon Pro 455
Architecture Gen. 9.5 Coffee Lake Polaris
Code name Kaby Lake GT3e Polaris 11
Type Laptop Mobile workstation
Release date 10 July 2019 27 October 2016
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 41.04
Floating-point performance 1,313 gflops
Memory bus width 128 Bit
Memory clock speed 5000 MHz
Memory bandwidth 81.28 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 +
Bitcoin / BTC (SHA256) 163 Mh/s
Laptop size large
Quick Sync +
  Check Price Check Price