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Confusion with oc'ing guide?

post #1 of 3
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Using this oc guide: http://www.hardforum.com/showpost.ph...89&postcount=2


Can someone what the difference is between step 1 and step 2 as i cant seem to see one

Thx
Fury
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post #2 of 3
Quote:
Originally Posted by The Fury
Using this oc guide: http://www.hardforum.com/showpost.ph...89&postcount=2


Can someone what the difference is between step 1 and step 2 as i cant seem to see one

Thx
Fury
These steps, please clarify, I do not see anything labeled as steps.

FSB Bus Frequency: the base clock speed for the CPU and HyperTransport link (referred to as HT link from now on). to overclock, you have to bring this number up, unless you have an FX. I will refer to this as the FSB (HTT), because calling it the FSB is.. a misnomer of sorts, and people get angry with me when I call it the HTT cause they get confused with the HT link.

LDT/FSB Frequency Ratio: another term for the HT link multiplier. the final HT link speed = FSB (HTT) * this number. It has virtually no effect on performance, so do not worry about lowering it to get a higher overclock. As a general rule of thumb, you don't want the final HT link speed going over 1000mhz.

Edit: Ohhh, this

FSB (HTT) OVERCLOCKING (first step!)
Armed with those programs, reboot into the BIOS and make the following changes:
HT link multi = 2x (edit: some boards have weird quirks, try 2.5x or 3x instead if you feel this is an issue)
CPU multi = 5x
RAM divider = "100mhz 1:2"


Boot back into windows after saving those BIOS settings and do this:
open prime95, and start an "in-place fft" torture test.
increase the FSB (HTT) with clockgen 2-3mhz every 15-30 seconds.
keep track of the speed of the FSB (HTT) as it's likely the computer will reboot before prime95 throws an error. whichever one happens though, remember 5mhz under the last speed you set.

write down this number somewhere, as it is the MAX FSB (HTT) YOUR BOARD CAN DO without tweaking other things. if you can't break 250mhz, something is wrong. we'll go over troubleshooting later.. or in person. haha





CPU OVERCLOCKING (second step!)
After that, go back into the BIOS and only raise the CPU multi to stock speeds from the settings listed before for FSB (HTT) overclocking. We are now trying to find the limit of the CPU. In windows:
open prime95, and start an "small fft" torture test.
increase the FSB (HTT) with clockgen 2-3mhz every 30-60 seconds.
When Prime95 errors, you have two options:
1.) lower the speed back down in 1mhz increments until you can run prime95 for >30 minutes
2.) if temps aren't a problem (less than 55c at full load) and you have no issue giving the CPU more voltage, go back into the bios, and increase the voltage a small amount. 0.05v is a good increment. go back into windows and resume testing for max stable speed.

Max voltage kinda depends on the cooling and cpu. for convenience, here is what i consider the max safe overvolt from stock voltage based on your cooling type:
Stock: +0.1v
Good Air: +.15v to +.2v
Water: +.2v
Phase Change: *** are you reading this for if you have phase?!
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post #3 of 3
The first step is setting your multiplier low, 5x in the example, in an attempt to find your max HTT. Like my HTT is set to 353 with a 8x multiplier.

The second step is setting your multiplier to stock, yours is 10x I believe, and seeing how far you can push your HTT with a higher multiplier.
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