The information that you get from Dell states that the maximum Ram is 8GB and they do not sell 2 X 8GB ram to upgrade. I puchased DDR3 1600MHz Vengeance RAM P/N CMSX16GX3M2A1600C10 from CORSAIR and it works perfectly and tests perfectly. I also found a 9 cell battery that is guaranteed to work with my laptop. Dell does not sell a 9 cell for this laptop. I will give an update on the battery as soon as I get it and test it out.
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Hi Mr. Snoid,
Thank you for your detailed research on our product. Keeping in view your valuable feedback I would like to add to it that on our official website we have a separate section that recommends our customers choose Memory for their system depending on their needs. Please find the link below for your reference:
Regarding the 9 cell battery I have intimated the inventory team. Once we have the update will keep you posted on the same.
Which version of Windows 7 64-bit do you have installed?
With Windows 7 Professional (64-bit), I think it's possible to use up to 32GB of RAM (since i7-3612QM max out at 32GB). I wonder if anyone has tried this.
I have Windows 7 Home Permium 64 bit . I wonder how much RAM Wndows 8 will allow. It's oming out officially on Oct.26. The upgrade is being offered for PCs purchaced after 6/2 for $14.99 ( I read about it from the horses mouth, microsoft.com ).
I don't think MS has published the RAM limits - but if it's like Windows 7 and you need a large amount of RAM, don't count on the basic Windows 8 (the $15 upgrade) fitting your needs - you will likely wind up having to buy 8 Pro.
With Windows 7, the Home versions are limited to 16 G (64-bit) at most.
Have you received the 9 cell battery? If so, please send me the name of the vendor so thay I may purchase one. Also, is your 7520 still functioning well with 16GB of memory?
With more than 8GBs of RAM some of the Intel Response Technologies wont work...
But i prefer 16GBs of RAM above Intel Technologies! =P
The battery snaps in and charges but you can't open the laptop with it attached, so it does not work.