Iris Plus Graphics 645 vs Radeon HD 7770

When choosing between Iris Plus Graphics 645 and Radeon HD 7770, 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 645 and Radeon HD 7770.

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 HD 7770
Power consumption (TDP) 15 Watt
Interface PCIe 3.0 x1
Memory type DDR3/DDR4 GDDR5
Maximum RAM amount 2 GB
Display Connectors No outputs
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  • Iris Plus Graphics 645 is used in Laptops, and Radeon HD 7770 - in Desktops.
  • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon HD 7770 - with GCN.
  • Core clock speed of Radeon HD 7770 is 700 MHz higher, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Radeon HD 7770 - by 28 nm process technology.

Game benchmarks

high / 1080p 4−5 10−11
ultra / 1080p 2−3 6−7
QHD / 1440p 0−1 1−2
low / 720p 12−14 24−27
medium / 1080p 5−6 12−14
The average gaming FPS of Radeon HD 7770 in Assassin's Creed Odyssey is 116% more, than Iris Plus Graphics 645.

Full Specs

  Iris Plus Graphics 645 Radeon HD 7770
Architecture Gen. 9.5 Coffee Lake GCN
Code name Kaby Lake GT3e Cape Verde
Type Laptop Desktop
Release date 10 July 2019 15 February 2012
Pipelines 48 640
Core clock speed 300 MHz 1000 MHz
Boost Clock 1150 MHz
Manufacturing process technology 14 nm 28 nm
Texture fill rate 50.40
Memory bus width 128 Bit
Memory clock speed 4500 MHz
Shared memory + -
DirectX 12 (12_1) DirectX 11.1, Shader 5.1
Shader Model 6.4
OpenGL 4.6
OpenCL 2.1
Vulkan 1.1.103
Bitcoin / BTC (SHA256) 156 Mh/s
Eyefinity +
Quick Sync +
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