Iris Plus Graphics 645 vs Quadro K620M

Find out if it is worth upgrading your current GPU setup by comparing Iris Plus Graphics 645 and Quadro K620M. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Iris Plus Graphics 645 and Quadro K620M. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Iris Plus Graphics 645 and Quadro K620M are Laptop Graphics Cards

Note: Iris Plus Graphics 645 and Quadro K620M are only used in laptop graphics. They have 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 or Quadro K620M here:

Main Specs

  Iris Plus Graphics 645 Quadro K620M
Power consumption (TDP) 15 Watt 30 Watt
Interface PCIe 3.0 x1 MXM-A (3.0)
Supplementary power connectors None
Memory type DDR3/DDR4 DDR3
Maximum RAM amount 2 GB
Display Connectors No outputs No outputs
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  • Quadro K620M has 100% more power consumption, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Quadro K620M uses MXM-A (3.0) interface.
  • Iris Plus Graphics 645 is used in Laptops, and Quadro K620M - in Mobile workstations.
  • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Quadro K620M - with Maxwell.
  • Core clock speed of Quadro K620M is 729 MHz higher, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Quadro K620M - by 28 nm process technology.

Game benchmarks

high / 1080p 4−5 3−4
ultra / 1080p 2−3 1−2
QHD / 1440p 0−1 0−1
low / 720p 12−14 14−16
medium / 1080p 5−6 5−6
Iris Plus Graphics 645 and Quadro K620M have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  Iris Plus Graphics 645 Quadro K620M
Architecture Gen. 9.5 Coffee Lake Maxwell
Code name Kaby Lake GT3e GM108
Type Laptop Mobile workstation
Release date 10 July 2019 1 March 2015
Pipelines 48 384
Core clock speed 300 MHz 1029 MHz
Boost Clock 1150 MHz 1124 MHz
Manufacturing process technology 14 nm 28 nm
Texture fill rate 50.40 17.98
Floating-point performance 863.2 gflops
Memory bus width 64 Bit
Memory clock speed 2000 MHz
Memory bandwidth 14.4 GB/s
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 1.1.126
CUDA +
Bitcoin / BTC (SHA256) 92 Mh/s
Optimus +
Quick Sync +
Display Port 1.2
nView Display Management +
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