Acer Aspire - Ram Compatibility

[Tolis_GR]

Hi Toms,
My friend's laptop: (LXRL70C0092160410A7200)
https://www.acer.com/datasheets/2011/4876/7739Z/LX.RL70C.009.html

We need 2x4gb in dual channel.
What i found in Crucial:
http://www.crucial.com/usa/en/compatible-upgrade-for/Acer/aspire-7739z
(i have doubts here)
His current memory:
Kingston 4gb 2Rx8 PC3 - 10600S -9 -10 - F20 (KN4GB07001125736091601)
ACR512X64D3S13C9G
If we buy this: https://www.ebay.com/itm/4GB-RAM-Chip-RAM-Kingston-ACR512X64D3S13C9G-SODIMM-DDR3-PC3-10600S-CL9/182971400983?epid=814672783&hash=item2a99f20317:g:QN8AAOSwjmFajjSH
How possible is it that we lose dual channel?
My proposition is always buying a new 2x4gb kit but i am having a hard time ensuring they will fit. Still i don;t understand why laptop manufacturers don't embed ram compatibility in their manuals. Any help is appreciated.

 

[algorithmbreaker]

Both listing eBay and Crucial listing are compatible spec, but doubtful if it will run in dual channel. Dual channel is activated only if the sticks are identical, speed, timings has to match. I would try the ebay listing.

Alternatively, you can check this link as well:

http://www.memorystock.com/memory/AcerAspire7739ZP622G50Mikk.html

Or try searching for a site that sell the same part number 'ACR512X64D3S13C9G'

 

[Tolis_GR]

The ebay one is also labeled as 'ACR512X64D3S13C9G' and has the same specs but i know there is always a chance that they won't run in dual. I guess i have to either hit or miss the ebay or start over with a new kit. Thanks for the feedback, hope it will work