$134.84, or $144.40 for 2 x 256 for dual channel
post #41 of 56
6/24/04 at 9:10pm
Originally Posted by Hibby
So just to double-check (I'm shopping for CL56 and RAM for an upcoming purchase), PC3200 isn't going to show any notable difference over 2700? The faster timings don't have any big effect?
Originally Posted by Speed_Mechanic
There is a long and a short answer to this question. Basically, because of certain limitations, when you (or anyone purchasing memory for a Centrino laptop, or pretty much any laptop in most situations) look at all the different SO-DIMM in the marketplace the only impacting differences between them is what's in their SPD-setting and their ability to run according to their SPD-setting with necessary stability.
This SPD chip gives the BIOS (which you do not have access to for this matter) a long list of predetermined settings for which it is meant to run. Among these, it tells it what timings to run at what clock speeds.
Depending on what memory you are looking at, there could be a decrease in performance by choosing PC-3200 over PC-2700. Unless you want to look at the specifics or want the best performing memory you can get, you may be best off looking for stability whether then any performance differences.
http://www.kingmax.com/product/pdfdo...D42D-D8KB3.pdf - Check the second-to-last page of this document to see what SPD tells your notebook. This KingMax PC-2700 TinyBGA SO-DIMM example tells your computer to run at 2.5-3-3-7-10 (CL-tRCD-tRP-tRAS-tRC) at 6.0ns (166MHz or DDR-333).
Whether or not you would notice a performance difference, without stability issues, between DDR-333 running at 2-2-2 timings and DDR-333 memory running at 2.5-4-4 timings depends on what you want out of your machine and is more of a personal issue then something that could be answered on these forums.