Overclocking with SCSI questions

[Nosferatu]

I have a KT7 Raid and a Duron 700. I am running Plextor SCSI CD Rom and CDRW. I was told that overclocking and SCSI dont mix very well. I had the FSB set to 100, the multiplier at 7.5 and the FSB changer that doesnt affect the PCI bus set to Plus 14. I was getting buffer underruns or "Loss of streaming" according to Nero. Does the Multiplier affect the PCI Bus speed? I had no problems with my SCSI setup with a prior 550 P3.

Would I be better off changing the multiplier to 7 and the FSB changer to 14 and settle for 800? (that is the highest stable configuration with the 7 as a multiplier)

 

[SpeX]

O/Cing shouldn't affect SCSI at all. All you want to to is keep the pci bus speed as close to stock as possible, 33mhz. So if you were running at 100mhz fsb set the pci divider to 1/3 = 33mhz, if were running at 133mhz fsb then set the pci divider to 1/4 = 33mhz. The multipier has nothing to do with the pci bus.

 

[Losty]

actually...changing the FSB plus option DOES affect the PCI/AGP cards...
so pci 114(1/3) = 38
the agp would be 114(2/3) = 76

i have my system running 9.5x105 and there was no negative impact on my scsi device
also tried 9.5x110 but that locked my system up...when running 3dmark2000

i heard if you change the i/o to 3.4 it may help keep the ram stable to run increased FSB

what is the difference between the fsb/pci and the fsb?

 

[Smbu]

Well, I don't have an AMD system, but my SCSI card Adaptec 2940UW is running fine on my system, P3 700@1ghz (143fsb). I've had no problems at all from my Plextor 12/10/32S drive.

 

[Viperoni]

The KT7 Raid (I have it) has an option to raise ONLY THE FSB.
He's not going nuts
I have my Duron running @ 825 (110x7.5)
That's not using the FSB+*** thing, this is actually affecting the PCI and AGP busses as well.
It runs great, stable, and I've never had any trouble at all.
114 mhz FSB is quite a bit for AMD mobo's, might want to try boosting your IO voltage.

 

[kylebisme]

wow thats a prety cool otion, and i did think he was going nuts

 

[Nosferatu]

Thanks for your input. It seems as though leaving it at multiplier of 7 stabalized everything. SCSI works as it should and no buffer underruns on the same disks I was havin problems with earlier.

 

[kylebisme]

that should realy have no effect, odd..