AGP/PCI Freqs. High = Bad?

[ChazFx]

Gidday,

The board im using is the Asus P4B533. As the name may suggest its designed for up to a 533 Mhz CPU, a P4 one even... Anywho, i digress.


What i was wondering was, since at a 133mhz these baords use a 1/4 divider (and its an older board so it probably dont have the 1/5...) to keep the Freqs at 33/66. Im thinking that my computers instability at 188 which gives me 47/94, be due to the high agp/pci frequency. Now i was reading a reveiw about my board and it mentioned that tha P4B533's feature of being able to lock the FSB at 33.33/66.66 was a deluxe overclocking feature.....

Any who since my Mobo will let me set the agp/pci frequency from 33.33/66.66 all the way up to someting like 120/240. Can i set it to 33/66 o somthing around there and have it a bit stabler? Presuming that those are the (one of the) causes of instability.


TIA

[Gnufsh]

If the cause of the instability is the high AGP/PCI bus frequency, then locking it at 66/33 will solve the problem. The issue that seems most often associated with high PCI frequencies is harddrive corruption. System instability is more likely the ram or CPU.

[Angry_Games]

^ he is correct. Especially with SATA drives, the bus being over 100Mhz the drives will fail to be recognized in the BIOS.

AGP cards are easily the culprit if the AGP bus is too high, same with your PCI cards etc. Lockups are normal at PCI/AGP speeds that are too high (like an AGP clock of 75Mhz or PCI of 45Mhz etc).

definitely always lock your PCI/AGP/SATA bus when the option presents itself in the BIOS!

[ChazFx]

Heh,

I thought it looked like a useful feature.

If thats the case, why then does it have all the other freqs. And not just the 33/66. Surly there wouldnt be a reason to run cards at more then 33/66?

[Gnufsh]

You mean other than overclocking them?