Iris Plus Graphics 645 vs Radeon RX 550

In this comparison between Iris Plus Graphics 645 and Radeon RX 550 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 RX 550 will be their preference. Study the comparison tables below and make your choice.

Iris Plus Graphics 645 is a Laptop Graphics Card

Note: Iris Plus Graphics 645 is only used in laptop graphics. It has 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 here:

Main Specs

  Iris Plus Graphics 645 Radeon RX 550
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 550 has 233% more power consumption, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon RX 550 uses PCIe 3.0 x8 interface.
  • Iris Plus Graphics 645 is used in Laptops, and Radeon RX 550 - in Desktops.
  • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon RX 550 - with GCN 4.0.
  • Core clock speed of Radeon RX 550 is 800 MHz higher, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 and Radeon RX 550 are manufactured by 14 nm process technology.

Game benchmarks

high / 1080p 4−5 14−16
ultra / 1080p 2−3 8−9
QHD / 1440p 0−1 3−4
low / 720p 12−14 30−33
medium / 1080p 5−6 18−20
The average gaming FPS of Radeon RX 550 in Assassin's Creed Odyssey is 200% more, than Iris Plus Graphics 645.

Full Specs

  Iris Plus Graphics 645 Radeon RX 550
Architecture Gen. 9.5 Coffee Lake GCN 4.0
Code name Kaby Lake GT3e Lexa
Type Laptop Desktop
Release date 10 July 2019 20 April 2017
Pipelines 48 512
Core clock speed 300 MHz 1100 MHz
Boost Clock 1150 MHz 1183 MHz
Transistor count 2,200 million
Manufacturing process technology 14 nm 14 nm
Texture fill rate 50.40 37.86
Floating-point performance 1,211 gflops
Length 145 mm
Memory bus width 128 Bit
Memory clock speed 7000 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
Quick Sync +
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