GeForce 820A vs Iris Plus Graphics 640

When choosing between GeForce 820A and Iris Plus Graphics 640, 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 GeForce 820A and Iris Plus Graphics 640.

Iris Plus Graphics 640 is a Laptop Graphics Card

Note: Iris Plus Graphics 640 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 640 here:

Main Specs

  GeForce 820A Iris Plus Graphics 640
Power consumption (TDP) 15 Watt 15 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x1
Memory type DDR3 DDR3L/LPDDR3/DDR4
Maximum RAM amount 1 GB 32 GB
Display Connectors No outputs No outputs
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  • Both graphics cards have the same power consumption of 15 Watt.
  • GeForce 820A is connected by PCIe 2.0 x16, and Iris Plus Graphics 640 uses PCIe 3.0 x1 interface.
  • Iris Plus Graphics 640 has 31 GB more memory, than GeForce 820A.
  • GeForce 820A is used in Desktops, and Iris Plus Graphics 640 - in Laptops.
  • GeForce 820A is build with Fermi 2.0 architecture, and Iris Plus Graphics 640 - with Gen. 9.5 Kaby Lake.
  • Core clock speed of GeForce 820A is 475 MHz higher, than Iris Plus Graphics 640.
  • GeForce 820A is manufactured by 28 nm process technology, and Iris Plus Graphics 640 - by 14 nm process technology.

Game benchmarks

high / 1080p 0−1 6−7
ultra / 1080p 4−5
QHD / 1440p 0−1 0−1
low / 720p 1−2 16−18
medium / 1080p 0−1 8−9
The average gaming FPS of Iris Plus Graphics 640 in Assassin's Creed Odyssey is 1600% more, than GeForce 820A.

Full Specs

  GeForce 820A Iris Plus Graphics 640
Architecture Fermi 2.0 Gen. 9.5 Kaby Lake
Code name GF117 Kaby Lake GT3e
Type Desktop Laptop
Release date 17 March 2014 3 January 2017
Pipelines 96 48
Core clock speed 775 MHz 300 MHz
Boost Clock 1050 MHz
Transistor count 585 million 189 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 12.40 52.80
Floating-point performance 297.6 gflops
Memory bus width 64 Bit 64/128 Bit
Memory clock speed 1800 MHz
Memory bandwidth 14.4 GB/s
Shared memory +
DirectX 12 (11_0) 12 (12_1)
Shader Model 5.1 6.4
OpenGL 4.6 4.6
OpenCL 1.1 2.1
Vulkan N/A 1.1.103
CUDA 2.1
Quick Sync +
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