Tom's Hardware > Forum > Motherboards & Memory > Memory > [Solved] Could DDR2-667 RAM replace for DDR-333 RAM

[Solved] Could DDR2-667 RAM replace for DDR-333 RAM

Forum Motherboards & Memory : Memory - [Solved] Could DDR2-667 RAM replace for DDR-333 RAM

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Best answer from mongox.

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athensy   09-11-2009 at 07:20:41 AM

Hi there,

I have an IBM ThinkPad T42 notebook, and would like to add more RAM to it. Could DDR2-667 RAM use on it? It's official support RAM specification is PC2700 (333MHz) 200 pin SO-DIMM memory.

Thanks in advance.
Athens

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Best answer from mongox
Your Thinkpad can only use DDR, not DDR2. You can use PC2700 or PC3200 on it.

Spec page on your computer
http://www-307.ibm.com/pc/support/ [...] -57839#mem

Crucial's compatibility page on it
http://www.crucial.com/store/listp [...] ad&cat=RAM

200 pin DDR SO-DIMM page at Newegg
http://www.newegg.com/Product/Prod [...] 3&name=1GB
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mongox   09-11-2009 at 10:44:27 AM
Best answer

Your Thinkpad can only use DDR, not DDR2. You can use PC2700 or PC3200 on it.

Spec page on your computer
http://www-307.ibm.com/pc/support/ [...] -57839#mem

Crucial's compatibility page on it
http://www.crucial.com/store/listp [...] ad&cat=RAM

200 pin DDR SO-DIMM page at Newegg
http://www.newegg.com/Product/Prod [...] 3&name=1GB

Reply to mongox
zipzoomflyhigh   09-11-2009 at 02:35:22 PM

OMG. You clearly state that your computer uses DDR333, so thats what you need, not something else. Geez.

Reply to zipzoomflyhigh
athensy   09-11-2009 at 05:57:59 PM

Thanks mongox,

I ask this stupid question, because I find that the price of DDR2-667 SO-DIMM RAM is much lower than DDR-333 RAM (I don't know why, do you?). So, I try to consult hardware guru in here to see whether I have chance to pay less money to get the job done. Clearly, I must take the expensive option.

Thank you very much for your help.

Athens

Reply to athensy
mongox   09-11-2009 at 09:56:35 PM

Glad to help athensy, only stupid question is the one you need to ask but don't!

 

The "sodium" nature of the laptop RAM always makes it more expensive. In addition, anytime demand falls for an older product, the price tends to rise above the newest "hot-selling" RAM due to economic reality. In order to keep making older RAM, the makers charge more. The price per GB of RAM, like hard drives, falls the larger the item, until reaching the peak of technology, where it rises again. So that 256K RAM costs more per GB than 2GB RAM; a 120GB hard drive costs more per GB than a 640GB - but a 3TB drive is more per GB being new tech.

 

I recently purchased some 1GB DDRs for an older Motherboard, paying about $42 per module for a total of $125 for 3GB. They didn't work and I ended up getting a brand new M/B and 4GB RAM for it for the same price. The 2 2GB modules cost $50 compared to 3 1GB modules for $125.

 

Good luck and hope your upgrade goes well.


Message edited by mongox on 09-11-2009 at 09:58:02 PM
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