Please, Help a newbie to overclock his 700/100 on IWILL slotket.

[zulu]

Well , i've installed PIII 700/100 E (sl45y), on Aopen ax6bc MoBo:
Latest bios, Intel cooler+fan,
IWILL Slotket II jumpers:
Fcpga;
FSB-100MHZ
Vcore Voltage- auto,(sisoft reports:1.69V)
After succesfully running it at default freq., I succesfully overclocked it to 112MHz and it runs stable at 24 degrees , 3DMARK2001 stable, quake, stable.
Unfortunately the next step inmy MOBO is 133, and it even refuses to POST!!!
Before I rise the voltage to 1.75V and burn my chip, I
suspect that maybe the memory is a problem?
According to sisoft my memory spec. are:

Micron 16lsdt1664ag-10cb4 010bd97b
128MB 16x(8Mx8) sdram pc125-333-622
(CL 3 up to 125MHZ) (CL2 up to 83MHZ)
Does it mean that this memory can only handle up to 125MHZ?
What is the problem with my comp?
Please help.

[batboy]

First, you need much better cooling. Second, you need to increase the voltage. Sounds like that CPU is a cC0 with a defualt of 1.7v, which means that you probably can go up to 1.9v without any problem... IF you address the cooling issue first. You're reporting 24 degrees, but I'm guessing that's system temp at idle, which mean very little. You need to know what your CPU temp is under full load. Now, I didn't mean to try 1.9v right off the bat, you need to take this slow and easy. One step at a time and check temps then run the machine to see how stable it is. Of course, you have to first get it to boot up.

[zulu]

1. No, it's cBo stepping, check:SL45Y.
2.I tryed rising the voltage to 1.75 V, (BTW, sisoft and system nonitor reports that it's 1.79V , why?), and still no post at 133MHZ!
Can you just tell me ,how can I know when it's a memory , that is holding me, and when it's a processor voltage issue? I don't want to burn the proc. and discover later , that all I needed is a better memory.
Please answer me, anybody...

[[OC]_SR20DE]

zulu (Apr 11, 2001 03:41 p.m.):
Well , i've installed PIII 700/100 E (sl45y), on Aopen ax6bc MoBo:
Latest bios, Intel cooler+fan,
IWILL Slotket II jumpers:
Fcpga;
FSB-100MHZ
Vcore Voltage- auto,(sisoft reports:1.69V)
After succesfully running it at default freq., I succesfully overclocked it to 112MHz and it runs stable at 24 degrees , 3DMARK2001 stable, quake, stable.
Unfortunately the next step inmy MOBO is 133, and it even refuses to POST!!!
Before I rise the voltage to 1.75V and burn my chip, I
suspect that maybe the memory is a problem?
According to sisoft my memory spec. are:

Micron 16lsdt1664ag-10cb4 010bd97b
128MB 16x(8Mx8) sdram pc125-333-622
(CL 3 up to 125MHZ) (CL2 up to 83MHZ)
Does it mean that this memory can only handle up to 125MHZ?
What is the problem with my comp?
Please help.


Zulu,

ok... you have a cB0 and little bit weak RAM. but this dont mean you can't overclock much, you still could fairly well.

Dong worry about the SisoftSandra's Vcore reading. There's always little bit of fluctuation +/- .5V. Just go by your mobo.

Some P3 chips overclock with less Vcore voltage than other P3 chips. You will have very difficult time to kill your cpu by upping one notch as you said(1.75V) but that's not enough to feed your system to run@ 133mhz bus.

If you dont want to wait and u wanna OC, I tell you.. keep your room cool, just not make it hot and stuffy. Take the CPU case cover off or take both sides off depending on the type of your case. You'll have to increase the Vcore to at least 1.80 or 1.85 volts. and this should get you up n running at 933mhz. If this wong work, then it's probably at the point your cB0 cpu is starting to max out and/or your RAM is sufficating. So try bumping Vcore first and see it will work. Warning: just dont go more than 1.85Volts.

And yeah it would be good get some nice Alpha cooling later.. Just be sure to take your case cover off and set a fan next to it if you feel unsecure..

[zulu]

So , is it no way to know if it's the memory that is holding me back, or insuffitient voltage? If it doesn't POST it may be either of them?
If not, then i think i'll try to get somewhere good PC133 memory , and by this way I can figure out what is a problem.
Any other suggestions?

[DocClock aka MadClocker]

Why don't you try it with just the one stick of pc133, if it boots, then you have a memory prob....if you are using a stick that states that it's good till 83mhz, believe it.
just try with your fastest ram, and you can eliminate many problems.
Also a cBO is good up to about 933-950, without supercooling....BUT also needs better than adequate cooling to get to 900 and beyond

[DaveB]

I've had a cB0 PIII 700 FC-PGA CPU and Iwill Slotket II combo since last June. It's running at 994 MHz (142.5 MHz FSB) with the core at 1.95V. The core has been at 1.9V or higher since last July. Your cB0 needs more juice!

I'm using an Alpha PEP66 for cooling - it never gets above 34C under load. Idles at 19C or so with Rain 2.0, or about 28C with Rain off. Don't worry about raising the core. Your cB0 PIII can take it with no problems. I've actually run my PIII 700 at 1050 MHz with the core at 2.05V just to prove it would work. But it wasn't stable, and I didn't want to push my luck. Keep the core under 2.0V with good cooling and you'll be OK.

The SDRAM info about 125 MHz at CL3 is standard for PC100 SDRAM. Normally PC100 uses 8ns RAM chips. Doing the math, 1/8ns = 125 MHz. That's how that number is arrived at. 8ns RAM is therefore spec'd at 125 MHz. But a lot of PC100, especially quality brands like Micron can do better. But for maximum overclocking, you'll need PC133 CL2 SDRAM. I use Mosel Vitalic stuff myself, and Crucial (a Micron subsidiary) has some excellent CL2 PC133 at good prices. If you set your mobo for CAS3 in the BIOS, you should have a real good chance of running at 125 MHz, and maybe a 50/50 chance of going at 133 MHz.

Other stuff. Your mobo is a good one, but the Intel H/S fan is mediocre. You can improve the performance by scraping off the thermal tape and applying a thin coat of thermal compound. I was able to run at 133 MHz with the Intel H/S fan though, so that's not your current problem. Try more voltage, and if that doesn't work, you might need to pick up some PC133 SDRAM.