--- On Sat, 11/7/09, Christian Wacker <[email protected]> wrote:
> From: Christian Wacker <[email protected]> > Subject: Re: Ram compatibility? > To: [email protected] > Date: Saturday, November 7, 2009, 8:08 PM > > I did some actual checking on these items and... > they range from 2mb modules up to 32mb and 64mb ones (most > are matched pairs) > i see that most are 60ns ones, and some I cannot identify. > I am tempted to scan them tomorrow and link to some > pictures, just to get some help identifying them. Google the numbers on the chips and you'll find out the type and capacity of the chips in kilobits or megabits. Multiply by the number of chips to get the capacity of the SIMM. With FPM, EDO, and standard DRAM, faster RAM will almost always work in a computer designed for slower speed memory. Depending on how the computer's memory timing is designed, using faster than specified RAM can make it run faster due to the memory being ready for read/write write access as early as timing allows instead of nearly as late as allowed. (With old PCs you can see this speed change in how fast the RAM count runs during boot.) Newer computers use much tighter RAM timings so putting PC100 or PC133 in a system that only requires PC66 won't do a thing for speed, though the faster RAM will work better for overclocking. Of course you'd have to use faster RAM that supports running at the slower speeds, later PC100/133 doesn't. DDR/DDR2/DDR3 memory always works at its rated speed or slower, if it fits the slot it works - as long as it is fast enough for the motherboard and CPU. In other words, DDR1 PC3200 will work in a board that tops out at DDR1 PC1600 but will only run at PC1600 speed. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/ -~----------~----~----~----~------~----~------~--~---
