You can try and run your PC66 ram at 75mhz. (It should handle it). I have PC100 ram running @110-115mhz. Yes you can have PC100&PC66 ram in the same box.
ah but could u have both running @ 100mhz???
In my other AMD system, I have 72-pin edo dram running at bus speed of 100mhz! totally stable, never got any lock ups related to stressed memory chips that I know of. Although, you are talking about 168pin dimms, but I'd just thought i'd let ya know.
If you have both pc66 and pc100 you are agian (obviously) limited by the pc66's inability to go as high as your pc100 stick. If your mem stick (pc66) doesn't do 100MHz then you need to forget about using it in a 100Mhz even if you buy some pc100 sticks. You'll just use the pc100's.
Before buying ask around about the various speed chips (10ns, 8ns, etc) 10ns is typical pc100 that won't go fra hiugher than 100Mhz. 8ns goes out to 125Mhz (taking down the speed a bit) and 7.5ns and bellow goes to 133 (also known as pc133) but good pc133 is 6ns (150Mhz and more)
i got a pc66 stick 64mb that will do 140 set to cas3 lose it at 150
also have a stick of pc100 that i am currently running at 150 fsb its 7ns cas2 128
not all pc100 will run that fast cas2 ram has a better chance though
oh yea im running a 500e on a p3bf
stupic ram questions
yeah if i had pc 100 ram could i up de fsb and not have any probs ??? ( i have a p2 333 which runs on a 66mhz bus)
also is 66mhz ram capable of running @100mhz?
+ can u have 66mhz ram + 100Mhz ram in the same box ??
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