Dear Wizards,
I performaed my first overtclocking last night:
P4 2.53 with DDR 333, on an MSI 655 Max series MS-6730. (533 Mhz, i.e. 133 FSB, fixed CPU multiplier of 19)
My additional limitation on this (Locked CPU) Ami Bios v3.03, seeemed to be that I could not adjust the PCI/AGP bus freq offset to more than 80/40 (original settings were FSB = 133, AGP/PCI = 66/33), which - given my limited understanding, restricted my reliable overclocking attempts to an FSB of 140 MHz - thus yielding an 2.66 machine (with the corsair memory overclocking reliably at 175 (i.e. 350 Mhz, and with more aggressive timing settings also).
Benchmarking and burn testing shows a reliable 4 to 5% uplift generally everywhere, without hint of instability. All well and good so far.
My questions please:
1, Is my understanding on the FSB-tuning limits imposed by the PCI/AGP offset limit correct generally, and with this board / biosspecifically ?
2, If there is something I am missing that could 'give more go', my objective would be to take it to 2.88 or 3.06 - if stable without fancy cooling.
Many thanks in advance of rall help and advice.
paul.
I performaed my first overtclocking last night:
P4 2.53 with DDR 333, on an MSI 655 Max series MS-6730. (533 Mhz, i.e. 133 FSB, fixed CPU multiplier of 19)
My additional limitation on this (Locked CPU) Ami Bios v3.03, seeemed to be that I could not adjust the PCI/AGP bus freq offset to more than 80/40 (original settings were FSB = 133, AGP/PCI = 66/33), which - given my limited understanding, restricted my reliable overclocking attempts to an FSB of 140 MHz - thus yielding an 2.66 machine (with the corsair memory overclocking reliably at 175 (i.e. 350 Mhz, and with more aggressive timing settings also).
Benchmarking and burn testing shows a reliable 4 to 5% uplift generally everywhere, without hint of instability. All well and good so far.
My questions please:
1, Is my understanding on the FSB-tuning limits imposed by the PCI/AGP offset limit correct generally, and with this board / biosspecifically ?
2, If there is something I am missing that could 'give more go', my objective would be to take it to 2.88 or 3.06 - if stable without fancy cooling.
Many thanks in advance of rall help and advice.
paul.