Hello, If Crucial still accepts a return if the memory module does not work then I would suggest purchasing from them. The PC2-6400 (DDR2-800MHz) module should clock down to PC2-5300 (DDR2-667MHz) speed, however, it might be a good idea to try installing a matched pair of PC2-6400 memory modules and seeing if they are accessed at the higher speed.
Regards, Aryeh Goretsky At 10:00 AM 4/24/2009, you wrote:
Message: 7 Date: Fri, 24 Apr 2009 01:14:04 -0400 From: Andrew Webber <[email protected]> Subject: [Thinkpad] X300: RAM update? To: ThinkPad List <[email protected]> Message-ID: <[email protected]> Content-Type: text/plain; charset=windows-1250 When I got my X300, I had some lockup problems. Since then they've pretty much gone away, I wasn't able to find a source for the problem or a pattern, and I wonder if a BIOS or other update fixed it. I've also still got only 2GB RAM which I know is too little for Vista. Occasionally it looks like the notebook has locked up when it's actually just slow. I figure I should get a 2GB SODIMM in case I go to 64bit OS at some point. The price is pretty low so I'm thinking it's worth it just in case. www.crucial.com says I should buy 200-pin SODIMM, DDR2 PC2-6400 and that Lenovo specs a minimum PC2-5300. Both are the same price on their site, is there any downside to the faster RAM used beside a Lenovo issue SODIMM? "CT791083 ? DDR2 PC2-6400 ? CL=6 ? Unbuffered ? NON-ECC ? DDR2-800 ? 1.8V ? 256Meg x 64" vs. "CT791088 ? DDR2 PC2-5300 ? CL=5 ? Unbuffered ? NON-ECC ? DDR2-667 ? 1.8V ? 256Meg x 64" On their sites, Crucial is $27, Kingston is $40, and Lenovo is $44 (US sites). Not that much more for Lenovo. Newegg's pricing ranges from $20 to $27 on the 2GB (5300), on names like Mushkin and PNY to Crucial and Kingston. Is there a difference between them? Are some brands important to avoid? Thanks! -- Andrew mailto:[email protected]
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