aaaaaaarrrrrrrgggggggghhhhhh!!!!!

[juliendogg]

okay, now i'm getting frustrated. spent about an hour soldering. raised my multiplier from 8.5 to 9.5 booted up.... whoohoo it worked!!!! (also took the core voltage up from 1.7 to 1.8 and it's actually at 1.85) only now if i kick up the fsb it's all to hell. keep in mind with my ga-7vm i'm limited to 100, 110, or 115 anyway. i was running at 8.5x115 wich put me around 977. I'M ALMOST THERE!!!! trying to get over 1000 then i think maybe i'll be happy (laugh) for a little while anyway.. if ottoman reads this i wanna know more about that sweet spot. maybe i can get lucky too!
oh yeah, and for ottoman....
core code: k7900cnrbea

__________________________________________________ __
slot a 750 (900 mhz core) @950
gigabyte ga-7vm
radeon 8500
west dig 10 gig 7200 rpm
pioneer 16x40 dvd
hp 10x4x32 cd-rw

[JetMech]

You have greatly increased the heat with you're voltage tweak so one area to look at is HSF. Also room temp and case temp. If I understood you correctly you should be able to try combinations of multiplier and FSB.

[Ottoman]

didn't your BIOS have voltage settings?

I think u have a classic athlon, not a T-bird...
which might make a diff...

u cache speed may be too high out of spec.
u might have to reduce the multpluier on that..


tell me what kinda errors u're getting?
if t's a total in windows lockup than u have too high fsb
if it's windows errors and BSOD's, then u need more voltage etc..


oh and just for reference..

my 650 ran at 1.6 volts
my 750 ran at 1.7 volts
so I'm thinking u;d need more voltage....

I run mine at 2 volts and don't have any serious issues...
but I think I can reduce the voltage, as well....

try whole numbers for your muliplier, like 8,9, 10, etc

that's why I recommended the GFD... if one combo doesn't work, u bend over flip 6 dips and u have a new CPU...

I've tried many combonations and many voltages...

[juliendogg]

i'm still running mid 40's with cpu temp, 25 case... pretty cool up here these days too so that helps.
yeah, it's windows freeze up. thing is i use easytune from gigabyte to adjust fsb from within windows and and as it's working its way up to 115 windows freezes. same thing that happens when i try to go above 115 in any case. i have the cach divider at 1\3 i've been running the fsb at 115 for about a month now with no problems and i was stable at 8.5x115 (977). it's not as hard as most people think to do the soldering, a little flux goes a long way. thing is i was running just fine at 977 1.7 volts (actually 1.74) now i can't get over 950 at all not by the fsb anyway... i'm gonna be online for a bit and i'll check back and then i'm going to tear it down and set the multiplier at 9, havn't tried that one yet and i'll only have to move 3 or 4 resistors i think. thing is my mobo doesn't like the clock changes, i generally have to reset cmos data to boot after messing with the clock speed. would like to find a really good slot a mobo. i liked my biostar m7mka better than this one. only the biostar would only support multiplier up to 8.0 and no t-bird. i can run a tbird in this one at least.

[juliendogg]

okay, got it. i'm at 990 now (9x110) and seem to be very stable, i ran sandra's burn in only on the cpu benches but only for about 10 minutes, and my 3dmark 2k1 scores are back up in the 6000's, dropped to 5800's at 9.5x100. okay, so 990 is the fasted i've been able to run stably. i'm pretty sure my voltage level will push a little more since mbm actually shows it as 1.85. so i'm gonna push the fsb up to 115. just wanted yall to know i've had some success at least. if this works i'll finally break 1000! if it doesn't and the usual routine follows it'll take me all night to get the thing to post again so wish me luck if you would:burn:

[juliendogg]

looks like i'm talkin to myself here but i'm gonna keep talking.... i can raise the fsb to 115 with no problem. runs good and then freezes after 5-10 minutes of tough 3d (ie 3dmark, quake III) think i've finally exeeded my cache top speed? cpuid puts it at
343. seems perfect running 9x110. voltage or cach? hmm. that is the question. my temps are still good but i don't really wanna raise the voltage any more. maybe some hardcore use at 990 then try 1035 again.
ideas?

[el]

what chipset are you using? I had a problem with my p3-600 with the via chipset and could not go over about 114fsb but a jump to 133 produced perfect results. so post what chipset your mobo has please and try lower mult and 133.

[juliendogg]

gigabyte ga-7vm via apollo kx-133. it will only support fsb of 100 110 or 115. that's why i need the multiplier so high. from what i've been able to find info wise on the net it was an attempt from amd to limit overclockablity in slot a's. the pll is limited to 115 fsb no higher. i also have no bios control over this, there's dipswithces on the mainboard but the board will only post if set to 100 fsb, also do to the pll, this is why i'm required to use easytune to raise fsb as windows loads. the rest of my specs are in the first post of this thread. honestly i'm suprised i got to 990 but it seems that with the 900 core in my athlon i could push a gig.

[Angry]

Whoa wait a sec...
The cache is built into the cpu, well for thunderbirds, like the socket a thunderbirds ( well ones 900-)... Only the classics cache had its own multi. So its like this, if u have 512k cache u have a classic, if u have a Tbird it will be 256k. Now, I know i had found an old article describeing this, also I may have just read your post wrong...so dont get mad at me, if wcpuid shows it as athunderbird then good, u have had great success with it....all i need to do is get a 900mhz tbird off prciewatch and see if it works in my board with latest bios, if not im looking for another mobo. ( 2 infact that will run a 900 tbird)...

Im going to see if i can find that article...

Ya think we can bring these slot A's back from the dead?

[juliendogg]

nope, mines a classic. 512 off die cache. i've no option in the bios for cache divider so i used mathlon. very effective because its loaded from config sys to set the cache divider before windows loads devices and such. not sure i follow your post other than that.
managed to hit 1000 just now though. 10x100. but i can't raise the fsb at all just like running with 9.5 multiplier. think i may get better performance from 8.5x115 (977)? that seemed to work well.
think i've just about topped it out. only thing i havn't tried is the 10.5 multiplier. still waiting to hear if jacking up the core voltage will help any more. since i boot fine and all but just can't change fsb.

[Angry]

You will get higher benchmarks from a higher fsb, both 3dmarks benefit from this...plus more memory bandwidth..even more if you have the +33 option for memory bus which adds 33mz to what ever your fsb is and puts that as your memorys bus speed..here ill add a pic. Anyway Im still looking for that article.

[Silver]

My 750 took a little more than I expected 2.0 vcore with water cooling to get in and stable at 1.0. It took 2.3 to get in at 1120 and after that I had heat issues.

[Silver]

Sorry, saw you are doing a slot-a and not a Duron. The speeds and volts posted above where with a duron.