Iris Plus Graphics 645 vs Radeon HD 6970

In this comparison between Iris Plus Graphics 645 and Radeon HD 6970 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 HD 6970 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 HD 6970
Power consumption (TDP) 15 Watt 550 Watt
Interface PCIe 3.0 x1 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin + 1x 8-pin
Memory type DDR3/DDR4 DDR5
Maximum RAM amount 2 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 2x mini-DisplayPort
  Check Price Check Price
  • Radeon HD 6970 has 3566% more power consumption, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon HD 6970 uses PCIe 2.0 x16 interface.
  • Iris Plus Graphics 645 is used in Laptops, and Radeon HD 6970 - in Desktops.
  • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon HD 6970 - with Terascale 2.
  • Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Radeon HD 6970 - by 40 nm process technology.

Game benchmarks

high / 1080p 4−5 14−16
ultra / 1080p 2−3 9−10
QHD / 1440p 0−1 3−4
low / 720p 12−14 30−35
medium / 1080p 5−6 18−20
The average gaming FPS of Radeon HD 6970 in Assassin's Creed Odyssey is 216% more, than Iris Plus Graphics 645.

Full Specs

  Iris Plus Graphics 645 Radeon HD 6970
Architecture Gen. 9.5 Coffee Lake Terascale 2
Code name Kaby Lake GT3e Cayman
Type Laptop Desktop
Release date 10 July 2019 14 December 2010
Pipelines 48 1536
Core clock speed 300 MHz
Boost Clock 1150 MHz 880 MHz
Transistor count 2,640 million
Manufacturing process technology 14 nm 40 nm
Texture fill rate 50.40 84.48
Floating-point performance 2,703.4 gflops
Length 267 mm
Memory bus width 256 Bit
Memory clock speed 1375 MHz
Shared memory +
DirectX 12 (12_1)
Shader Model 6.4 5.0
OpenGL 4.6 4.4
OpenCL 2.1 1.2
Vulkan 1.1.103
Bus support PCIe 2.0 x16
HDMI +
Bitcoin / BTC (SHA256) 273 Mh/s
Eyefinity +
Design reference
CrossFire +
Quick Sync +
  Check Price Check Price