Iris Plus Graphics 645 vs Quadro K420

When choosing between Iris Plus Graphics 645 and Quadro K420, 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 Quadro K420.

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 Quadro K420
Power consumption (TDP) 15 Watt 41 Watt
Interface PCIe 3.0 x1 PCIe 2.0 x16
Supplementary power connectors None
Memory type DDR3/DDR4 128 Bit
Maximum RAM amount 1 GB/2 GB
Display Connectors No outputs 1x DVI, 1x DisplayPort
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  • Quadro K420 has 173% more power consumption, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Quadro K420 uses PCIe 2.0 x16 interface.
  • Iris Plus Graphics 645 is used in Laptops, and Quadro K420 - in Desktops.
  • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Quadro K420 - with Kepler.
  • Core clock speed of Quadro K420 is 576 MHz higher, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Quadro K420 - by 28 nm process technology.

Game benchmarks

high / 1080p 4−5 0−1
ultra / 1080p 2−3 0−1
QHD / 1440p 0−1 0−1
low / 720p 12−14 9−10
medium / 1080p 5−6 1−2
The average gaming FPS of Iris Plus Graphics 645 in Assassin's Creed Odyssey is 80% more, than Quadro K420.

Full Specs

  Iris Plus Graphics 645 Quadro K420
Architecture Gen. 9.5 Coffee Lake Kepler
Code name Kaby Lake GT3e GK107
Type Laptop Workstation
Release date 10 July 2019 22 July 2014
Pipelines 48 192
Core clock speed 300 MHz 876 MHz
Boost Clock 1150 MHz
Transistor count 1,270 million
Manufacturing process technology 14 nm 28 nm
Texture fill rate 50.40 14.02
Floating-point performance 336.4 gflops
Length 160 mm
Memory bus width 128 Bit
Memory clock speed 1782 MHz
Shared memory +
DirectX 12 (12_1) 12
Shader Model 6.4 5
OpenGL 4.6 4.5
OpenCL 2.1 1.2
Vulkan 1.1.103 +
CUDA 3.0
Bitcoin / BTC (SHA256) 11 Mh/s
Quick Sync +
3D Vision Pro +
Mosaic +
Width 1" (2.5 cm)
Number of simultaneous displays 4
nView Desktop Management +
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