Ram Upgrade Problem

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Fizy45

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Apr 18, 2014
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I bought my ACER ASPIRE TIMELINE 4820TG notebook 4 years ago and since then I am using it with good performance.But couple days ago while playing some games I noticed a huge ram load so I decided to upgrade my rams.I opened up the case and saw that there are two 2 gb ram installed.

I went to the store and bought 4 gb kingstom 1333 mhz ram.sodimm

When put 1 - 2 GB and 1 - 4 gb ram (total 6 gb) it showed on bios but windows dont boot up.I switched the slots and again windows didnt boot up.Lastly I tried to boot with my new 4GB ram only but again it didnt work.I also tested the ram on another laptop and it worked fine so its not defected.

I made a resarch and found out that my 2 gb defult rams were working at 1066 mhz speed so I guess that my 4 gb 1333 mhz ram dont work because my mainboard doesnt support speeds over 1033 mhz.

Still I want to ask you guys.Is my counclusion right can do something to fix it without buying anything or should I have to buy 1066 mhz ram in order to work or is it something else causing this problem ?

Also I have a early 2011 macbook pro and I wonder will this new 4 GB 1333 mhz work with it ?

Thanks...
 
Solution
Tradesman1
Might be the DRAM is a newer line that won't default to lower than 1333, many newer lines have bypassed the older (lower) defaults of 1066 and 800 in their SPD programming. It may also use high density memory ICs which also aren't compatible to the older laptops. Best bet would be to get something off the laptops vendor list if they have one, or get true 1066 sticks
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Rogue Leader

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Dec 22, 2014
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You are correct that ram is incompatible. While it may fit you need to match the ram to the system. It doesn't necessarily mean that 1333 mhz ram won't work in there. The easiest way to identify what you need is to go to crucial.com and look up the computer or download their tool and it can ell you what will work.
 
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Rogue Leader

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Yes it may well offer that, ram compatibility is about more than just mhz. There are things like timings and latency that will make it work or not work.
 
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Tradesman1

Tradesman1

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Jun 5, 2013
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Might be the DRAM is a newer line that won't default to lower than 1333, many newer lines have bypassed the older (lower) defaults of 1066 and 800 in their SPD programming. It may also use high density memory ICs which also aren't compatible to the older laptops. Best bet would be to get something off the laptops vendor list if they have one, or get true 1066 sticks
 
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