HAOS on Intel Nuc: HAOS see 3gb from total 4gb of memory

Installation
1

Hi

I use HAOS in Intel Nuc for a while and never notice total memory shown in HAOS. My hardware is Celeron and 4gb of ram. I see my HAOS system utilize avegare 50% of memory which show in hardware page 1.6gb/3gb. Why it is not 4gb? I already login Bios Page and also start windows10 to check and they correctly show total memory of 4gb.

My HAOS version is 9.5 and HA core is 2023.2.5

2

Mine shows 1GB less too.

3

There can be several reasons for that.

  • you can use a 32bit version of HAOS. 32bit OSes can only see around 3.2Gb due to limitation of 32bit addresses.
  • the ram can be reserved for other hardware, like the graphic card, CPU ornetwork.
    The graphic card is often set to reserve some Mb.
  • you might also see a number affected by differences in notation. An engineer will often see a kilobyte as 1000bytes, while a software developer will see it as 1024bytes. This might seem as a small difference, but after kilo comes mega and then giga and each of these have the same difference, so the engineers gigabytes will be 1000x1000x1000bytes=1000000000bytes, while the software developers will be 1024x1024x1024bytes=1073741824bytes

And having one in effect that not exculde the others.

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4

I don’t have access to my BIOS at the moment but I’m guessing IGD memory reservation is almost certainly the reason.

As this runs headless I could probably reduce it.

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