Not possible to increase performance beyond the default settings for this model.
Not possible to increase performance beyond the default settings for this model.
Hi! I'm attempting to push the Q9400 CPU on an Asus P5Q-EM motherboard, but it's not responding well. The best I've managed is a 340*8 FSB (which is the default 333*8), and anything above that causes the system to fail to boot, showing a "overclocking failed" error after restarting. I've adjusted DRAM frequencies, voltages, and RAM speeds, but nothing seems to work. C1e is disabled, speed steps vanish once the multiplier is set, and spread spectrums are turned off too. The BIOS is up to date. Any suggestions?
when ram is set at 400mhz and the fsb ratio is adjusted to 1:1, you should be able to run fsb at 400. if you leave the ratio unchanged, it will attempt to block ram to match the fsb speed, which often leads to problems.
Not every Asus board is designed for overclocking. Certain BIOS versions can establish an FSB cap within the PLL chip during startup. 340 is often used for this reason. In the OEM or IT sectors, a 95W CPU cap helps avoid the core extremes and stops overclocking via FSB. You might be able to modify the BIOS to achieve this.