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TH7II Owners: What settings for best overclocking

K

Kamui

Senior member
Hey guys,

I just got my th7II with a 1.8A cpu. I plan to overclock the system and I wondering what settings and bios should I use in order to ensure highest performance and stability

thanks.

Kamui
 
The 38 bios should be fine unless you have a great overclocker. I don't think too many 1.8's make it far past the 133bus mark anyway. I wouldn't try to use the "fix" option in the bios because that feature didn't work on my board. Even with "fix" enabled it continued to run my pci bus out of spec. Just make sure to use the appropriate dividers.

There is a 77beta bios floating around that fixes the "fix" option and allows for voltage increases up to 1.85v (instead of the stock 1.625). pm me if you need some more info.
 
My motherboard came with the -38 version BIOS, but the "fix" option didn't function properly. So I reflashed the BIOS with the same -38 version found on Abit's site. After that the "fix" option worked and my PCI/AGP bus is in spec.

The settings that are most important to consider involve the RDRAM and then core voltage.

Ideally you want to keep the 4x (400Mhz) multiplier for the ram so you have increased memory bandwidth. (very important for the P4) If your ram can't handle the 4X multiplier as you ramp up the FSB, then drop it to the 3X (300Mhz) multiplier and see how far you can take it.

Now about core voltage... I'm actually an overclocking newbie (this was my first OC'ed system)

You only want to increase core voltage just as high as you need it to be, in order for your system to be stable. Depending on your chip it might need more or less voltage than others in order to attain this. You have to play and test it out yourself.

I've heard conflicting stories about the dangers of bringing the core voltage too high, but one thing is certain: The higher you set the voltage, the more heat your CPU will be producing. Make sure you have ample cooling available.

As for me, I'm still running at default voltage since my 1.6A won't go higher than 2 Ghz, however that's a limitation of my ram. I'll be getting PC1066 RDRAM when it comes out so I can delve deeper into overclocking.

Good luck overclocking! Just take it slow and carefully. Run a lot of Prime95 first and make sure no errors occur. 😉
 
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