ocing 566 to 850

[andy_r]

hey, i have a celery 566 oced @ 708, 83 fsb the problem is it wont go past that fsb i dont know why. Here's my hardware

asus p3b-f
abit slocket iii
v3 3000 agp
192 pc 100 sdram
golden orb cooler

if anyone has any suggestions or actually had this problem please let me know

thanks

[batboy]

You didn't mention what CPU core voltage you were using. The default on the Celeron 566 is 1.5v, but I had to use 1.65v for my 566 to run stable at 850 MHz.

[andy_r]

im on voltage 1.5 for 708

i tried 1.50 1.55 1.60 etc. all the way to 1.80 nothing works at 100fsb :(

[Executor]

You have to go higher on the voltage i am using 1.85 whit a 566@850

[batboy]

If I were you, I wouldn't get too crazy with the voltage yet, until you make sure the CPU cooling is good enough. I also have a Golden Orb and while this was the hot ticket last spring and summer, there are much better coolers out on the market now. I'm planning an upgrade to an Alpha cooler. Also, there are a few 566 chips that just plain won't dance at 100 MHz. Good luck with yours.

[andy_r]

my motherboard locks at 1.80 V, this chip was a friends and its been to 850 already. i have some thermal paste on it its runing at 32.

http://www6.tomshardware.com/cpu/98q2/980514/celeron100-01.html

what do you guys think about that, would it be worth it?

[kunsunoke]

andy_r (Jan 15, 2001 08:20 a.m.):
my motherboard locks at 1.80 V, this chip was a friends and its been to 850 already. i have some thermal paste on it its runing at 32.

http://www6.tomshardware.com/cpu/98q2/980514/celeron100-01.html

what do you guys think about that, would it be worth it?

Still might be. It's conceivable you got one of the reluctant ones, though. As I recall my old 566 would not post at 100FSB at 1.75; would post & go into Win 98 at 1.80 but would occasionally get protection errors; would post & run most programs except 3d gaming software at 1.85 volts & finally achieved Unreal Tournament stability at 1.90 volts. I managed to get the heat out with a Tt Gorb & Arctic Silver paste (38 deg. C). It was fine there, but I wanted some additional schnootz so I upgraded to the 667 cCO version & am now at 1 GHz+ at 1.85 volts.

You may need as much as 1.95 volts to get it stable. Good luck, & if you need help come on back.

[andy_r]

"this chip was a friends and its been to 850 already"

he gave me this mobo and cpu he had it at 850. But i cant get it at 100fsb

[kunsunoke]

andy_r (Jan 15, 2001 10:09 p.m.):
"this chip was a friends and its been to 850 already"

he gave me this mobo and cpu he had it at 850. But i cant get it at 100fsb

Andy, have you tried to get your core voltage past 1.8 v?

You may have to go as high as even 1.95 volts (the de-facto max.) in order to get it stable at 100 FSB. Check out the 566 listings in the database & you will see what we mean.

How did your bud have it set up when he had it running at 850? How was his system different from yours?

I should think that this would be a slam dunk, since you are using the Asus P3B-F board, which is a good overclocker. Of course, this assumes you took the normal OC precautions - HSF; arcticsilver, case fan-o-rama, etc.

Are you sure your system busses are where they should be (e.g. AGP set to 2/3, PCI set to 1/3)? Are there any other problems you could be running into from a timing standpoint (such as running PC66 or bad generic PC100 RAM)?

[kunsunoke]

One other thing...

I currently have 192 MB (1x64 MCT & 1x128 Zeus) of PC133 on board (Abit BX-6 v.2 with CII/667 at 1030 MHz) & was running into a situation a few months back where I couldn't get the mobo to post - at all! Two things were happening:

1) My MCT stick was not PC133 as advertised, but was probably PC100 cas3. As it turned out the third party supplier sold the wrong memory. The key was the memory chips - they were Nanya (not good). MCT was good enough to replace it with PC133 CAS2 with Infineon chips (the good stuff).

2) Upon receipt of the new MCT stick I tried running it in the DIMM #1 slot next to the Zeus stick in DIMM #0 (which also had Infineon chips); however, the system only made it past the POST. I shut down, opened my case & switched the MCT stick from DIMM #1 to DIMM #3. This solved the problem & the system is now rock stable.

Hope this helps.