Core 2 quad oc?

[Helpful Tech Witch]

So I've heard that by covering a pad on a core 2 quad you could give it like a 25% oc. Is this true? I have a motherboard from a old workstation, and it doesn't have an oc bios. I am not experienced enough with writing code to make a bios for the Mobo. Also which pad is supposed to be covered? Does this work on a Q6600?

[Jurrunio]

It lets the multipler top at 9, so how good it is depends on what the CPU has by default. If it has like 10, then this mod wont help at all

[Helpful Tech Witch]

1 minute ago, Jurrunio said:

It lets the multipler top at 9, so how good it is depends on what the CPU has by default. If it has like 10, then this mod wont help at all

Wdym?

[Grabhanem]

iirc it's a frontside bus tweak, not a multiplier tweak. Core2 chips use the FSB to talk to the other system components and scale the memory and CPU frequencies off that frequency. Covering a pin can make the board think the chip is asking for a 333MHz FSB vs 266MHz, so doing it on a 266MHz chip (anything that advertises as 1066FSB on the IHS) will give a healthy performance jump.

 

In depth tutorial here-

 

edit: had fsb math wrong

[Helpful Tech Witch]

im doing it now, and the cpu is reading the same during a r20 cinebench benchmark.i covered the right pin

the first run was 465 and was no tape. the 2nd got a 433 and was the tape mod.

Edited July 15, 2020 by TheTechWizardThatNeedsHelp
more info

[Grabhanem]

2 hours ago, TheTechWizardThatNeedsHelp said:

im doing it now, and the cpu is reading the same during a r20 cinebench benchmark.i covered the right pin

the first run was 465 and was no tape. the 2nd got a 433 and was the tape mod.

Does your board list support for any 1333MT FSB cpus? I haven't tried this mod but I'd expect that if the board is hard-coded to give a 1066 FSB the tape wouldn't do anything.

[Helpful Tech Witch]

it says core 2 quad max. No other info.