Someone to help me identify Ram chip and understand what is this strange metal plate in my box ?

[Goran2016]

Hi my friend !

First ... Here is 3 cheap (30$) "MXQ PRo" box ( S905 based) 1G/8G ...two comes from the same seller (Iess than 1 week between orders), one from another seller.... Same look , same packaging but... differents Ram chips. The first one is Etron Tech, the second is Nanya, the third Hynix. And here is my problem.

A guy claims on Internet that the Etron tech chip is 256mb only, that the factory use Zram to fake 1GB and The real ram Capacity of the box is 512mb ( 2x 256). I think he simply search the chip ID number on google. Then I have searched too the nanya and Hynix chip ID numberand i found 4GB Ram Capacity. Well i 'm pretty sure to not underdand well... Someone can explain me ?


Second question...

There is on this MXQ Pro a metal plate under de the board. On internet, somes say that it's help heat dissipation, others that it's simply to make this box heavier ... I don't know who i can believe ?

[trebor]

Read all the Numbers on the Chips and Google that may tell what size they should/could/might be others may add to this.
The Metal plate is to give it some weight so it it does not slide all over the place
If there is a thermal Pad (sponge rubber) between the PCB and plate then yes also for thermal reduction.
Cheers

[Xlr8]

What Trebor said +1
Personally, I removed the metal plate as it interferes with wifi.
My S905 has thermal cooler attached to CPU(small one with fins). However, I have seen some that have the large metal plate with thermal pad attached to S905 chip so for those setups leave the big metal plate in.

Good luck

[Goran2016]

Ok Thanks for your answers !

I finaly understand where is the problem... The guy has searched the Etron techn ID number and he has not understood Gigabit/Gigabyte and Density/organisation.

The Etrontech chip is 256x16 = 4096 Mb , there two chips then 4096 x 2= 8Gb = 1GB