***WARNING*** this is a really long and somewhat pointless post. if you dont wanna read it, i dont blame ya. ***WARNING***
The adventure started with this board when i was tryin to watch a movie, and it was all §§§§ty. i thought "damn, i need to oc this beast! 200 mhz aint cuttin it."
i tried bumpin the FSB, but it would hang or crash every time it went idle for more than 2 seconds. after dickin around, i found out that my network card was bein a little whore. replace that, and i got the 200 to 291. (83.3 mhz fsb and a multi of 3.5)
i try to get the 4.0, 4.5, and 5x multis to work, but no go. so now im running at close to 300 mhz and 3.54 V core, at 41ºC full load over night with the closet door closed (my comp is in my closet, long story)
i was happy, till i started playin diablo 2 again. im thinkin, "im happy with 15-20 fps, but i want more speed, and folding is takin too long!"
so i started dickin around a little again tonight. i decide to look up info on my PLL, and see if it will hit 100 FSB with a little modding.
finding out that it only hits 83.3 mhz cpu bus, i decide to take an extreme step, and bypass the damn thing for the CPU clock all together.
First, i find the PLL, or clock generator of my board.
i find that it is a "9169cj-27" so i search for a datasheet on it.
I found that it was made by a company called "ICS", so i continue to search on their site.
i found that the "J" wasn't on any of thew results, so i assumed that was randomly tossed in there.
so when i found the datasheet, i look for the pin that outputs to the CPU for it's reference clock.
pin 5 is CPU output, cut this and inject signal here.
the highest freq that the 9169cj-27 is able to generate is 83.3 mhz.
if a signal of about 100 mhz is injected here, i would be able to
reach speeds of around 350 mhz. 110 mhz would achieve 385 mhz
(assuming that the multiplier remains at 3.5x) so to reach 400 mhz,
i would need to inject a signal of approximately 115 mhz. this will be
accomplished by using the most basic signal generator i can
(as i dont feel like spending 2 months buildin a damn signal generator!)
so right now im searching for a schematic on this. any help from you guys would be great.
i would like to be able to vary the output signal, but i might not
get that complicated yet. i'm gonna wait to hack this board to hell
till i get my CPU and RAM, so i'll have a system to use when i totally
murder this board.
im havin fun in this half buzzin state, and makin ALOT of progress in 1/2 hour (- typin all of this)
basically, tryin to see how far this little P1 200 MMX will go, and how hot i can get iti'll be happy to hit 400, even happier at 500.
wish me luck
PS, the board is a supermicro P5MMA98, just in case you wanted to look at it on the net.
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