Ron wrote: >Jerry, what Dan says is correct but I have a Umax 160/2000 (I'm in >UK) similar to C500 and the handbook that came with it recommends EDO >chips, although it implies FPM will work, but not as comfortably.
The S/J-series and C-series each had their own ways of maximizing memory performance. In the S900/S910/J700, FPM (Fast Paged Memory) was specified and it could be interleaved by installing paired memory (same size and speed) in corresponding banks (A1 and B1, A2 and B2, etc.). Memory interleaving gives about a 10-15% performance boost in memory-intensive functions. Per spec, EDO (Extended Dynamic Output) will work in these machines, as EDO is merely a sub-set of FPM memory (one additional bit defines EDO, and this bit is simply ignored in FPM machines), but the S900/S910/J700 will derive no additional boost from EDO. I say "per spec" because there's some real-world evidence from this list that it doesn't always go over so well in these machines. I've never encountered such problems myself nor in UCC's test lab. In the C500/C600, EDO is preferred simply because these machines get their 10-15% boost from EDO, rather than from interleaving (they can't interleave). Per spec, FPM memory should work just fine, but with slightly sub-optimal performance. -Kennedy Brandt http://home.earthlink.net/~supermac_insider/ -- SuperMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | Service & Replacement Parts [EMAIL PROTECTED] | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> SuperMacs list info: <http://lowendmac.com/supermacs/list.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/supermacs%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
