PC 133 SD-Ram Probs @ OC'ing

hi guyz, i am running a 1,3 ghz celeron @ 100 FSB...I 've got a double sided 512 Mb SD-RAM PC 133 OEM Module...

now i tried to overclock... i overclocked the fsb to 110 and everything worked fine...then i passed 110 and got bluescreens

i looked up some settings in the bios and saw a entry called hclk wich was set @ hclk +33... guess that means 100 fsb + 33 = 133 Mhz memory clock, right ? so the memory would run @ 143 if i set the FSB for 110, which means that the oem module can handle a maximum of 143 mhz, still right ?

now i wanted to pass the 110 fsb, so i reduced the hclk to hclk, guess that means a memory clock of 100...now i could raise the fsb to 120 which leads to a memory clock of 120...

now i wanted to get even more, but at 121 fsb i get a bluescreen as soon as windows xp finished booting...

i dont understand why the memory is working @ 133 and a fsb of 100 mhz or rather 143 mhz memory clock, but refuses to work at a memory clock of 121 mhz ...

maybe i am wrong and u could help me...and what if i set the memory setting for hclk -33, this would mean 66 mhz of memory speed. could i get further in fsb speed this way or would the whole system suffer too much from this setting ?

another interesting point is the fact that a new module of Viking pc 133 shows me a bluescreen at the current 120 mhz fsb and 120 mhz memory clock...

maybe its not the ram and the cpu put your ram timings to SPD aswell

what do you mean by that ?

maybe its not the ram making it unstable it could be the cpu

and put the ram timings to the rated ones

reducing the timings to 2-3-3 lets me finally use my new viking, but still no gain in fsb though, still got to work on that

i forgot to say, that the same processor and the same memory module ran at a fsb of 123 mhz and a total clockspeed of 1623 mhz on my old asus p3b-f...so it might have to do something with the mainboard, right ?

could be i ive never had a intel board well i got a p4 1.6ghz but its not mine and i dont use it its to slow for me lol

i wouldnt know about ur prob, but i have my pc100 sdram running at 133 atm .... no problems at all..... 3-3-3 though..

yep, your board is very good for overclocking, but apollo pro 133 a sucks in it