Fsb

[DCMan]

Hey :)

I'm still getting back into the world of overclocking and stuff, and I havent had a new system since my original Slot A Athlon of nearly 3-4 years ago - so I was just wondering a few points:

I have managed to get the FSB of the mobo up to about 225mhz (450DDR) - is this a fairly good overclock? I am also having to run the CPU with a multiplier of 10. This is pretty much the limit that I can run the two at without increasing voltage - is there anyway that I can increase the speed without increasing voltages, or is that still the only/best way to do it? And what is the highest safe voltage to run a XP2400 at?

Thanks :D

DC :)

[lechumbl]

Hi DC,

Nothing wrong with a 225 MHz overclock on a 2.0GHz CPU. That is not bad at all.
Nice thing about using a factor of 10, and a fsb of 225. The system will perform much faster than using a higher factor and a lower fsb.

It would be hard to go much higher without increasing the voltage.
If it were me, and I did not have W/C, I would leave it where it is.
If you go watercooling, then you can sweeze out some more MHz.

I think you can run safely to 1.85 on the voltage, and not cause any harm.
I have all three of my XP and MP 2000s running at 1.85 core and they are not running hot, with my water.
With air cooling, you will run fairly hot.

Take care, and good luck..........

[DCMan]

Thanks.. Sorry to ask loadsa questions- just dont want to kill anything while they are still new toys.. hehe...

DC :)

[mdzcpa]

That's an excellent overclock there my friend:) 225 is a great FSB to hit with stability on an AMD rig.

Lee is right on about the voltages. You'll need to notch them up to get the CPU up further. Same for the DDR voltage.

Be aware, you may be nearing the end of the line for the FSB and memory speeds. To make sure you know what your limits are, try lowering the multiplier and continue upping the FSB. By lowering the multiplier you'll be taking the CPU linit out of the equation. When you hit instability, you'll know it is FSB/memory related.

You can then do the reverse....up the multiplier. Push the CPU without raising the FSB further. This will tell you what the limits of your CPU are.

ONce you know both limits, you can pick the best speed which maximizes both the FSB and CPU.

You'll need some voltages to do so. The DDR up to 2.9v is very safe. I'd stay below 1.85v for air cooling the CPU. And don't forget to up the Vdd (chipset) voltage to hit higher FSB speeds.

[DCMan]

I think this is the limits that I can get to with this set up. I think there is more in the CPU yet, but I dont want to push past 1.8V at the moment.

Running at 1.775v (CPU), this is the best I can do, hehe!

http://www.furryweb.com/oc2.jpg

Temps after running SETI for 5 hours solid are:

CPU @ 45.5/C
Case @ 30/C

I'm not sure how much further I should go though, without it starting to get risky :confused:

DC :)