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**wrench97** · 12-03-2008, 01:33 AM

If it recognizes 2 512's but not anything with the 1 gig the I would have to think the 1 gig stick is not compatible with the laptop you should be using 2 matched sticks for dual channel mode which is faster then single channel mode with unmatched sticks.

12-03-2008, 01:33 AM	#6 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Posts: 17,907 OS: XPSP3	Re: DDR vs DDR2 If it recognizes 2 512's but not anything with the 1 gig the I would have to think the 1 gig stick is not compatible with the laptop you should be using 2 matched sticks for dual channel mode which is faster then single channel mode with unmatched sticks. __________________ Power Supply and Selection