OC CPU w/ Memory

[Y2KSI]

I have looked around the forum, I am sure it is in here some where, But I was looking forward to seeing the answer before I get to old to care about overclocking.

I have the Asus A7N8X deluxe board, w/ a Barton 2500+.
My memory is Corsair's twinx 1024 of pc2700 fsb 333.
Now when I go to over clock my CPU do I use the Mutiplier so that the MHZ stays at 166 because of the Memories FSB being only 333?
And When do I know when to start messing w/ the voltage?

Sorry for the Newbie ?.

Like I said I read your posts for like 2 weeks now and still didn't find the answer for this.

[7keys]

Did you read all of this thread?

http://forum.oc-forums.com/vb/showthread.php?s=&threadid=207088

[hitechjb1]

Originally posted by hitechjb1
For Tbred B, 1700/1800 DLT3C, in most cases, I use these numbers:
1.500 - 1.550 V will get CPU to 2200 MHz (stable) = 200 x 11
1.550 - 1.625 V will get CPU to 2300 MHz (stable) = 200 x 11.5
1.625 - 1.725 V will get CPU to 2400 MHz (stable) = 200 x 12
1.725 - 1.900 V will get CPU to 2500 MHz (stable) = 200 x 12.5
...

Extending them to Barton, I would say usually:
1.650 - 1.700 V will get CPU to 2200 MHz (stable) = 200 x 11
1.700 - 1.775 V will get CPU to 2300 MHz (stable) = 200 x 11.5
1.775 - 1.875 V will get CPU to 2400 MHz (stable) = 200 x 12
1.875 - 2.050 V will get CPU to 2500 MHz (stable) = 200 x 12.5
...

[Y2KSI]

Yes I read that article.
I guess I didn't quite understand it.
once you get the FSB up the highest it will go do you start to take the multiplier up to or do you leave the multiplier at the lowest setting you can?

And the other ? was does my Rams FSB inhibit me to be able to take the CPU's FSB higher than 166mhz since it is a dual channel 333mhz FSB?

I just want to make sure I do not kill my CPU before I ever get to really use it.

[Gnufsh]

Use a low multi (as low as it will go) to test the system and see how high your FSB will go. Then raise the multi and use the FSB to fine tune, aiming for highest CPU speed with highest FSB.

[Gnufsh]

Maybe I didn't phrase that correctly. After you've found the max fsb, find the highest CPU speed. Then, get the highest CPU speed (or close too it) at as high an FSB as possible.

[7keys]

If you use Altec’s guide you can find how far over spec your ram can go. Some ram can go very far over spec, some can't go that far, test to find out.

From Altec’s guide

Do this to find the limit of your ram.

1) Drop the multiplier to something like 5. If your motherboard does not allow you to adjust your multiplier this low, then you will have to settle for the lowest multiplier you can use. You can also unlock your CPU to gain the lower multipliers, but it will take some modding to the chip.

2) Begin to raise the FSB by increments of 5Mhz, testing with Prime95 and memtest86 until the machine becomes unstable. By unstable I mean that it creates rounding error in Prime95, or errors in memtest86.

When the computer gets to be unstable with a high FSB, back it down slowly (1Mhz or 2Mhz at a time) until the computer regains its stability with memtest86 and Prime95

5) This should tell you roughly the maximum frequency that your memory can handle with the voltage and the timings you have it set on. If you want to see if you can get more move your memory voltage up a little, and relax the timings a little and see if you can squeeze some extra Mhz out of it.

Begin to move the multiplier up slowly and test with Prime95 and 3DMark 2001 until the CPU becomes unstable. You will know it is unstable when Prime95 encounters a rounding error (or any error of that sort) or if 3DMark2001 dumps you back to the desktop in the middle of a benchmark. If you want to use 3DMark2001 to test for stability, the best way to do it is to loop the benchmark for a good 45min - 2hrs and see if it dumps you to the desktop at all.

7) Back the multiplier down little by little and test with Prime95 and 3DMark 2001 SE until the computer is stable again. This should be the highest stable overclock you can get without changing the CPU voltage.

8) To see if you can get more out of the CPU begin to raise the CPU's voltage and move the multiplier up until you feel satisfied with the speed you are at. I usually try to make sure that the voltage that is going through my CPU is below 2.0v, and I feel that this is a good regulation, unless you have some more advanced methods of cooling (other than air).