Iris Plus Graphics 655 vs Quadro P400

In this comparison between Iris Plus Graphics 655 and Quadro P400 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 655 will be the best choice, for others Quadro P400 will be their preference. Study the comparison tables below and make your choice.

Iris Plus Graphics 655 is a Laptop Graphics Card

Note: Iris Plus Graphics 655 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 655 here:

Main Specs

  Iris Plus Graphics 655 Quadro P400
Power consumption (TDP) 15 Watt 30 Watt
Interface PCIe 3.0 x1 PCIe 3.0 x16
Supplementary power connectors None
Memory type DDR3/DDR4 GDDR5
Maximum RAM amount 2 GB
Display Connectors No outputs 3x mini-DisplayPort
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  • Quadro P400 has 100% more power consumption, than Iris Plus Graphics 655.
  • Iris Plus Graphics 655 is connected by PCIe 3.0 x1, and Quadro P400 uses PCIe 3.0 x16 interface.
  • Iris Plus Graphics 655 is used in Laptops, and Quadro P400 - in Desktops.
  • Iris Plus Graphics 655 is build with Gen. 9.5 Kaby Lake architecture, and Quadro P400 - with Pascal.
  • Core clock speed of Quadro P400 is 928 MHz higher, than Iris Plus Graphics 655.
  • Iris Plus Graphics 655 and Quadro P400 are manufactured by 14 nm process technology.

Game benchmarks

high / 1080p 12−14 7−8
ultra / 1080p 7−8 4−5
QHD / 1440p 2−3 0−1
low / 720p 27−30 18−20
medium / 1080p 16−18 9−10
The average gaming FPS of Iris Plus Graphics 655 in Assassin's Creed Odyssey is 60% more, than Quadro P400.

Full Specs

  Iris Plus Graphics 655 Quadro P400
Architecture Gen. 9.5 Kaby Lake Pascal
Code name Kaby Lake GT3e GP107
Type Laptop Workstation
Release date 1 September 2017 7 February 2017
Pipelines 48 256
Core clock speed 300 MHz 1228 MHz
Boost Clock 1200 MHz 1252 MHz
Transistor count 189 million 3,300 million
Manufacturing process technology 14 nm 14 nm
Texture fill rate 50.40 20.03
Floating-point performance 679.9 gflops
Length 145 mm
Memory bus width 64 Bit
Memory clock speed 4008 MHz
Memory bandwidth 32.06 GB/s
Shared memory +
DirectX 12 (12_1) 12 (12_1)
Shader Model 6.4 6.4
OpenGL 4.6 4.6
OpenCL 2.1 1.2
Vulkan 1.1.103 1.2.131
CUDA 6.1
Quick Sync +
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