I have the same problem on 3 mobos! jetway ultra raid and ecs k7s5a all updated bios work fine with a duron 1000 . i bought latest msi AT 333 and Win98se at 1150 MHZ it works great, but hangs repeatedly when i clock the FSB to 133 , i think the DDR ram is simply not up to this speed also check that the chip reallly is a xp1800 i had a real shouting match with the vendor he couldnt find out what the prob was either. some computer fairs are selling ddr ram which is unbranded and definately will not run at 266 , thats my costly experiance. any one else got any ideas ?

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I have the same problem but slightly different. I just bought a pc chips mboard 817lr with an xp1800. I'm using 384 mb of pc-133 sdram right now & when I clock the CPU to 133, the system runs at 1150. If I clock it at 100 it sees the processor as a xp-1800 but consistently locks up. The mboard doesn't seem to have a multiplier, but has a utility in the bios thats supposed to let you tweak it. Unfortunately I can't seem to make changes there. Any ideas?

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oops I have my pins backwards. It won't runn at 133 which makes more sense.

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Hey all thanks for your reply's, sorry to hear so many others are suffering this problem but... I eventually found out the hard way what the problem was. It turns out that one of my 9GB SCSI IBM hard disk drives was on its way out. When it died and i replaced it with a newer faster drive it worked at 133. I get the impression that certain disks cannot hold up to a 133 bus speed. As a test try a different new'ish hard disk in your machine.

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Hi, I have a similar problem with my new PC. System cannot run with the 1530Mhz BIOS settings. ( a BIOS alert reports 'Incorrect clock speed') At 1150 it start and boot correcty, runs for some time then stops. I have a A7v266-e Asus board with 2x256 ddr memory banks.

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I had the same problem as all of you, and i have the same motherboard as Joe E, a pc chips 817 LR. The way i fixed it was, after setting the FSB to 133 MHz, i made sure the RAM voltage selector was set for the DDR setting (i am using DDR in the motherboard, it can do both DDR and SDRAM) Before i had set the voltage selector to DDR, i could run it at 100 mhz, but it wouldn't start at 133. Hope that helps!

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The 817LR is the a horrible MB. The problem that you are having Joe E is due to the fact that the 817LR can only handle a processor up to 1.2 GHz. See for yourself at www.pcchips.com. I had an 817 LR for three days and my system suffered from lock up after lockup and that was while trying to install an operating system. Get rid of it ASAP is my advice.

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i have the same problem ! i have athlon xp1800 and the mortherboard is "msi k7n420 pro"(new one). In fact if the motherboard doesn't support 133 mhz (like mine), it won't do 133 *11.5 = 1529 but 100*11.5 = 1150 mhz !! is there a solution to overclock ?

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Problem solved ! i thought that my mb is not supporting 133 mhz (previous post), i was wrong, i modified in bios that it's 133 and restart, my computer recognize correctly my proc athlon xp 1800 (before it displayed athlon (tm)). and my computer runs in 1533 mhz. but the temperature indicates 62 , before (1150 mhz) it was 57. i think i have to put another ventilator ...What do u think about the temperature ? what can i do ? ( i have seen in some forum that the processor can go up to 70 )

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All you gotta do is set the jumper to 133 its defaulted to 100. I can run at 1600 but when I switch to 1800 I get some strange errors. Drayc-

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wow so many people with that problem. if i run my amd 1800XP @1150 mhz, it seems that everything is working properly, but when i jumper my mainboard to fsb133 he constantly keeps hanging. wtf? i replaced my HD and i bought new ddr memory but it won't work. only @ 1150 MHZ. btw i have an aopen ak77pro mainboard. we all have the same prob. and no-one has an answer..pretty strange. HOLLAND ;-)

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