1ghz t-bird stuck on 1050mhz

[cagle]

I have a A7V133 with a 1gig 266fsb T-bird. I cant seem to get it to run any faster than 1050. I have increased the fsb only, and when I hit 145 fsb I loose stability. So I thought it might be the vcore, but it wont boot with any setting other than 1.75v. The mutliplier is locked I guess @ 7.5. It won't boot at any other. I have connected the L1 bridges to unlock the fsb. My current temps are 36 case and 48 underload. I also changed my sdram to cas2 in the bios. I have a 300w ps. Any suggestions? Thanks in advance.

[Rob Cork]

UPDATE: Welcome to the forums, just realised I think you're new here. Hope you enjoy them as much as the rest of us do :D

Could something else in the system be preventing you from getting higher, perhaps a PCI card or RAID/SCSI controller? 145 fsb isn't too bad, it could be your board just won't handle any more. I think it's more likely to be something other than the chipset though, but there are so many variables that without testing each component with a comp known to work at higher fsb speeds you can't be sure which part is holding you back.

By the way, the L1 trick is used to unlock the multiplier, not the fsb. You can oc the fsb without going anywhere near the L1 bridges, so if your multiplier is still locked you might want to take another look at them. Could be they're not joined properly - what did you use to unlock them, a pencil, conductive paint or something else?

Temps are pretty good, it could be cooler but 48C is nothing to get worried about. That's assuming the mobo temp probe is accurate of course - but I think Asus mobos tend to be slightly pessimistic when reading temps and it's likely your actual cpu temp is lower than 48C under load. HTH :)

[cagle]

I connected the L1 bridge with a #2 Pencil, I have a Promise Raid 0 chip on board, but no card. I dont have any SCSI cards either. I have ATI Rage Fury 3D card (AGP), an Philips Acustic Edge Sound Card, and a PCI modem. Has anyone heard of any issues with these. I thought this board was more or less made to OC? (A7V133) I will try to better connect the L1, and possibly pull out the sound card and modem and see if those are it. Thanks

[GuNRocK]

all 1ghz cpus are LOCKED so try to unlock it...i did worked perfectly with a HB pencil... i think 145fsb is too much for a pci...u got A7V i am guessing rev1.05+ so u shouldnt have a problem.....i got the old skool version my fsb wont pass 107mhz and i got my computer to boot 107x12.5=1333Mhz but it woulnt boot i am guessing my hdd dident have enough power to boot...since i am using a 250w psu and i have heard u need 300w to get over 1.1ghz ..and its true i get windows problems if i try to pass 1111mhz blue screen of death at 1122mhz thats only 102fsb also...heh...... unlock is the only way to go if u need speed.

my baord has 90~145fsb i can chose but it dont work past 107....yours probly only goes to 145 also...so thats teh max i know that a7a266 goes higher but...yours was made for Tbirds first generation 200fsb then certified to run at 133fsb with 1.05+revision but i think the chipset has a max of 145fsb.... good luck

[PDL]

cagle, I have the same board and the bios FSB goes up to 166.
I had it there but I think it is too high.
First, don't try to change the Vcore in the bios, it won't work. Use the jumpers for that.
If you are trying to increase the FSB in bios and the L1s are open, you need to remember that for a 266FSB chip the default multiplier is 7.5(7.5*133=approx 1000). There is an issue with getting the 266FSB chips to post higher using the multiplier and I don't know if it has been totally resolved as yet.
Make sure the L1s are closed and up the Vcore slightly. Then try to up the FSB in bios a small amount at a time till it becomes unstable. Then the Vcore again and so on.
REMEMBER: as the Vcore goes up so will the temps, so good cooling is a must.
Also, this is done with the bios setup in JUMPERFREE mode.

[cagle]

Thanks,
I found that L1's weren't closed completely. As soon I closed them all the problems ended. I have been working on getting circulation in my case up to par. Currently I am running my 1ghz @ 1.33ghz and so far no problems. That is with 10*133and about 50 underload and about 43 to 45 no load and about 30degrees case temp. I am going to start upping the bus voltage next. So far the core voltage hasn't dropped at all it is currently @ 1.81, but I set it for 1.75v. I have read that Asus bumps the voltage a bit, so Im not too worried about that yet. And yes, I have caught the overclocking bug. lol... Thanks for all your help.