Iris Plus Graphics 645 vs Radeon RX 560X

When comparing Iris Plus Graphics 645 and Radeon RX 560X, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between Iris Plus Graphics 645 and Radeon RX 560X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

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 560X
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 4 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon RX 560X has 400% more power consumption, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon RX 560X uses PCIe 3.0 x8 interface.
  • Iris Plus Graphics 645 is used in Laptops, and Radeon RX 560X - in Desktops.
  • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon RX 560X - with GCN 4.0.
  • Core clock speed of Radeon RX 560X is 875 MHz higher, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 and Radeon RX 560X are manufactured by 14 nm process technology.

Game benchmarks

high / 1080p 4−5 18−20
ultra / 1080p 2−3 10−11
QHD / 1440p 0−1 4−5
4K / 2160p 4−5
low / 720p 12−14 35−40
medium / 1080p 5−6 21−24
The average gaming FPS of Radeon RX 560X in Assassin's Creed Odyssey is 266% more, than Iris Plus Graphics 645.

Full Specs

  Iris Plus Graphics 645 Radeon RX 560X
Architecture Gen. 9.5 Coffee Lake GCN 4.0
Code name Kaby Lake GT3e Polaris 21
Type Laptop Desktop
Release date 10 July 2019 11 April 2018
Pipelines 48 1024
Core clock speed 300 MHz 1175 MHz
Boost Clock 1150 MHz 1275 MHz
Transistor count 3,000 million
Manufacturing process technology 14 nm 14 nm
Texture fill rate 50.40 81.60
Floating-point performance 2,611 gflops
Length 170 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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