[Solved] What is meant by 'ver:1 eco:3' under Architecture in OpenWrt's Overview section?

Installing and Using OpenWrt
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Under System's Status in OpenWrt's Overview, I see:

Architecture	MediaTek MT7621 ver:1 eco:3

What is meant by ver:1 eco:3 above ?
Does the eco:3 mean that my wifi radiation is at the most ecological(lowest) setting/power ?
And what does ver:1 means then ?

Also what is this ? :

Target Platform	ramips/mt7621

How to read this notation ? :

Load Average	0.01, 0.01, 0.00
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I think eco means Engineering Change Order, a manufacturer's term for a slight change to the internal layout or circuit of the CPU that doesn't warrant increasing the major version (ver) number.

Load Average is the same as other Linux systems, there are a lot of explanations on the web. It's complicated but basically a higher number means that the CPU(s) is (are) being used more. The three numbers are averages over different lengths of time.

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Thanks for replying and shedding light on the eco. Now there is some info on this.

2ndly, I have a dual core cpu in routor then why are their 3 numbers ? Is the 3rd one average of both cores ? Can you link me to where this notation is described in openwrt.

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See https://man7.org/linux/man-pages/man3/getloadavg.3.html

The numbers are not scaled by number of CPUs, so a dual core system running at full load will show 2

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Linux runs the MT7621A as a 4-core CPU since it supports two threads per core. A very few models have the MT7621S chip which is limited to one core, 2 threads.

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The getloadavg() function returns the number of processes in the
       system run queue averaged over various periods of time.  Up to
       nelem samples are retrieved and assigned to successive elements
       of loadavg[].  The system imposes a maximum of 3 samples,
       representing averages over the last 1, 5, and 15 minutes,
       respectively.

I think the above answers why its 3 in number as mentioned in provided link
Thanks

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I thought Windows and Linux treat cpu threads similarly so thank you for clearing this

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Only this left to know :

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for 2x2/3x3/4x4 802.11ac platform

So, that is platform. ok, right.
Thank you

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Solutions in chronological order given by @mk24 @bmork @lleachii :

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