Iris Plus Graphics 645 vs Quadro FX 5800

When choosing between Iris Plus Graphics 645 and Quadro FX 5800, 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 FX 5800.

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 FX 5800
Power consumption (TDP) 15 Watt 189 Watt
Interface PCIe 3.0 x1 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin + 1x 8-pin
Memory type DDR3/DDR4 GDDR3
Maximum RAM amount 4 GB
Display Connectors No outputs 2x DVI, 1x DisplayPort, 1x S-Video
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  • Quadro FX 5800 has 1160% more power consumption, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Quadro FX 5800 uses PCIe 2.0 x16 interface.
  • Iris Plus Graphics 645 is used in Laptops, and Quadro FX 5800 - in Desktops.
  • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Quadro FX 5800 - with Tesla 2.0.
  • Core clock speed of Quadro FX 5800 is 310 MHz higher, than Iris Plus Graphics 645.
  • Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Quadro FX 5800 - by 55 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 FX 5800 have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  Iris Plus Graphics 645 Quadro FX 5800
Architecture Gen. 9.5 Coffee Lake Tesla 2.0
Code name Kaby Lake GT3e GT200B
Type Laptop Workstation
Release date 10 July 2019 11 November 2008
Pipelines 48 240
Core clock speed 300 MHz 610 MHz
Boost Clock 1150 MHz
Transistor count 1,400 million
Manufacturing process technology 14 nm 55 nm
Texture fill rate 50.40 48.80
Floating-point performance 622.1 gflops
Length 267 mm
Memory bus width 512 Bit
Memory clock speed 1600 MHz
Memory bandwidth 102.4 GB/s
Shared memory +
DirectX 12 (12_1) 11.1 (10_0)
Shader Model 6.4 4.0
OpenGL 4.6 3.3
OpenCL 2.1 1.1
Vulkan 1.1.103 N/A
CUDA 1.3
Quick Sync +
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