CAN I GO ANY FURTHER ?

[halil1980]

Hello I have a P 3 1400 512ch 133 fsb
Board is tusl2-c and have 512 mb kingston module 133 fsb

Everything is stable (tested many programs and games).
Increased vcore from 1.40 to 1.55 and the fsb to 162 !
I have overlocked this far ;
http://img67.imageshack.us/img67/4295/cpu9qp.jpg

But intresting the agp transfer rate descents form 4 to 2x when the system overlocked! Does not happen when there is no overlock attempt!
http://img529.imageshack.us/img529/7434/agp2lb.jpg

Beyond this system is becoming unstable sometimes resets itself!Sometimes no boot etc.
Is there another way to perform overlocking any further because I use the bios to overlock the system maybe a windows utility ?Yes I have a big powerfull fan with a full copper heatsink !The temprature in 1700 is not so much even ! 43 degrees !
I dont think instability happens bacause of heat !
In short can I overclock this old beast to the frontiers of 2 ghz ?
Btw can you explain why the agp bus has been decreased ?
Thanks for your replies !

 

[ChipDeath]

Boards back then didn't have an AGP/PCI lock, so to reach >160FSB is quite impressive for that tech. (PCI bus will probably be running in excess of 40Mhz, AGP double that which most cards don't like).

That, and plus P-IIIs simply don't get much faster. the fastest I've heard of was 1.7 or 1.8Ghz anyway.

No idea about the 2x AGP thing though 😳

You've pretty much hit the limit for your hardware I think.

 

[mitch074]

AGP thingy: if you push your clock higher than original, then AGP may get unstable in higher rates. for example, imagine you've raised your FSB from 133 (AGP = 66 MHz) to 150 while you were overclocking: your AGP has raised to 75 MHz (not too much). Now, try 166: AGP is at 83 MHz (starting to feel). Considering that AGP 4X is quad-pumped (4 pulses per Hz), you're getting 'AGP 5.4X' - which may be a bit too much. So it would revert to AGP 2X - in effect 'AGP 2.7X'.