hey guys i recently have decided to up grade my computer from 512 mb to 1 gig of ram now my question is that the memory chip that i got in my computer right now says its a pc2100 ddr . now my question is that there is a memory chip that is being sold to me at a good price on ebay 512 MB DDR PC 2700. Now does it matter that its a pc 2700??? because the one that is in my computer is a 2100 ddr. will the 512 MB DDR PC 2700 be compatible with my computer. i have a sony vaio pcv rx 660 wtith 512MB PC2100 DDRAM MEMORY SONY PCV-RX660. so i guess my question is will a 512 MB DDR PC 2700 be compatible with my computer???? thanks for your help.

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The new RAM will work fine. It will just run at PC 2100 instead of 2700 but there is a chance you can run your 2100 at 2700. 2100 is 266mhz and 2700 is 333mhz. Ive always been able to do that.