Acer forum: Aspire 1 (aod255e) RAM upgrade

Crucial says use PC3-8500, but PC3-10600 should be compatible (at least according to the package), plus the 1G stick that's in there is PC3-10600. Am I missing something? Did you suggest I go there to double check or because I missed something obvious?

Thanks.

A friend sent me a link to a thread on another forums site. It appears that the Acer memory must be "single rank".

I assume this means, that the 2G must be made up of 8 2Gb chips, and not 16 1Gb chips.

I think this means that I'm going to pay more than $25 for the SO-DIMM, but its something to try.

On the aod255 and aod260, there is an added complication that if you check Acer's web site, it says that the memory can not be upgraded in these models. I thought it was because the memory is such a pain to access (and it is - step one is taking out the keyboard), but I wasn't sure. In the back of my mind was the thought that maybe it couldn't be expanded for a hardware related reason.

The main problem with getting single rank RAM is that manufacturers don't seem to care. I called a local store who told me over the phone that they had Crucial memory in stock - they didn't. They had two other $24 brands (the two I had already tried), and PNY for $10 more. I took the PNY off the shelf and saw it was 2 rank RAM, but when I went to put it back on the peg, I noticed the one behind it was 1 rank. Out of 10 packages with the same part number and UPC code, about half were 1 rank and half 2 rank. I don't think manufacturers much care. So this may be memory you have to buy in person, or at least verify over the phone.

Anyhow, I bought the $34 PNY because I simply couldn't bear the thought of reassembling and the disassembling this Acer again. All's well that ends well, and so far, its working great!

As I mentioned in a previous post, when I bought my RAM, there were both types of RAM in the exact same packaging with the exact same UPC code, making me think that it's going to be difficult to mail order.

If I needed to do it again, I would try to buy the memory in person. Just visually check to make sure the RAM only has 8 total memory chips on it. I think the one that finally worked for me had 4 on the front and 4 on the back. The two I tried that did NOT work had 8 on the front and 8 on the back.

I have added an additional stick in my 721 which is DDR3, and it works fine. I would suggest in the AOD255, to make sure that you have the correct ram Speed that you've purchased.

Based upon the specifications, found here: http://support.acer.com/acerpanam/netbook/2010/Acer/Aspire/AOD255/AOD255sp2.shtml

The speed of RAM for this computer is 1066 mhz. Naturally, if you're using 1333 mhz speed RAM. You're going to get the exact error you're experiencing.

Also be sure it is Single Channel, and not Dual Channel RAM.

Hope that helps.