Originally Posted by stasgoubar1818
Hi! I am quite new to overclocking, i have an old gaming rig with a motherboard Gigabyte G41M-ES2l and a Intel Core 2 Quad Q 9550 2.83Ghz stock. I would like to get it up to 3.4 or 3.5Ghz but im having some issues i hope u guys could help me out.
I've seen people get it up to 4.5ghz so i know its unlocked but, i can't seem to get it past 3.05Ghz. I put the voltage a litle higher than usual... so 1.206V. The multiplier is 8.5 so at its highest and im just changing the cpu clock frequency.
But at some point my motherboard (or something else) ignores the cpu clock i set and it resets to the stock frequency.
I played a litle with the settings and i found out that if i up the Pci express frequency to 105Mhz it boots into the frequency i newly set. So as i was saying i came to 3.05Ghz but i cant go higher i tried everything i thought of, even increasing the Pci express frequency to like 110Mhz (i read somewhere that it becomes dangerous if its above 120Mhz). But my pc fails to post or boot and resets to the stock bios settings. The motherboard shouldn't be an issue, because i had a Intel Core 2 Duo e8600 in it overclocked to 3.4Ghz. So i know i can get higher than 3.05. Although i have been thinking it might be the power consumption of teh cpus.
The Core 2 duo needed 65w max and the Core 2 quad needs 95w max.
I need help badly.
I'd leave the PCIe frequency alone.
The board doesn't look like you would be able to get that much out of it. The quad overclocked is going to eat a lot more power than the dual core (65 and 95 watts are definitely NOT the max used by those CPUs). The board doesn't exactly seem like it was built for OCing, no heatsinks on the VRM, only a 4pin (instead of an 8pin).
Hopefully someone more knowledgeable than I can give you some pointers to OCing your 9550, but 3ghz doesn't seem that bad if you were only able to OC your 8600 to 3.4 (which had a stock of 3.33). From what I've read, this board tops out around 340 FSB, so you are likely at your wall already (340*8.5*1.05 [for the PCIe clock, which I assume factors in based on what you said] ~3.05ghz).
Unlocked means the multiplier is unlock; the Q9550 is locked, to get it higher, you'd need a board that has a higher FSB limit (I've seen people running 450+ on otherboards). You could look into getting a QX6700, though I still don't know how well your board will handle anything clocked much higher than your current CPU (esp because the 6xxx-chips seem to need more power anyways). I don't think a QX9650 would be worth the price (~$50 on ebay; at least the QX6700 is $15).