Overclocking on DS4.

2

2004raptor

Limp Gawd
Joined
Oct 21, 2006
Messages
178
Months ago I was able to push my fsb to 400 and get my e6400 stable @3.2GHz. Just moved over to a p35-ds4 rev2 and want to do trhe same.
What all do I need to do to get it there and stable?

I've got the right hardware, just need some help finding my way around in the bios.
 
http://www.hardforum.com/showthread.php?p=1030795318

Basically,

cpu multi to 8
set fsb to 400
memory mulitplier 2.0
leave memory timings all auto for now.

set cpu voltage 1.40V

set your memory voltage per manuf specs, default is 1.8V so if you need 2.0V you should put in +.20V in the memory voltage setting (1.8 + .2 = 2.0)

fire it up and if no issues put in your actual memory timings and then start reducing the cpu voltage one step at a time to find it lowest stable setting.

This assumes you have PC6400(800MHz ram)
 
Thank you for the info Bill

I did see the link before but since it was 965 instead of P35 I wasn't sure if something would be different.

Memory is rated @2.2volts (crucial pc6400). Does that generally mean to go ahead and set it to 2.2 or is it OK to start out at the mobo's default and adjust if necessary?

I set it to 4,4,4,12 and the fsb to 400 but never adjusted any voltage.

And I'll look for memory mulitplier in the BIOS. don't recall seeing it.


thanks alot for your help.
 
I did everything except change RAM voltage to 2.2v.

vista wouldn't load at all. you think it could have just been the ram voltage or could it have been one of the other settings?
 
I'll try and do that later after work.

I can't recall the exact error but it went to a black screen that said <grub> or something similar. Then I tried to get back into the bios to change things back but it kept freezing. I just had to get into bios and set to defaults real quick.
 
You might also want to make small ajustments to your FSB and / or Northbridge voltage (try +0,1v), after all you are asking it to do 50% more work :)
 
BillParrish said:
set the FSB to 333 and try again.

what exactly is happening ?
Click to expand...

I set it to 333 and so far, it's OK. Windows calls it 2.66GHz.

Should I adjust something else to try and get to 400?

Also, I still haven't adjusted memory to 2.2v. Shoould I do that as well?
 
it sounds like it is up and running pretty stable at 2.66. Do the following one thing at at time, testing in between, (5 min of orthos) make sure "memory performance" is set to "Normal" . Booting into a memtest CD is recommend until you reach your goal or an apparent max FSB at current settings, then try windows.

bump memory voltage - test
raise MCH voltage .1 V -test
raise FSB to 366 - test
if fail raise MCH voltage another .1V - test
if fail reduce MCH .1V try 350 FSB -test 360 - test it should fail again at 366 and post back here with findings.
if pass at FSB 366 try 380 then 390 then 400 (hoping the ram voltage + MCH did the trick) if you fail along the way try again with another .1V of MCH and retest.

Comments:
I would put in +.3 so that the total voltage is 2.1V (being a bit conservative, but we have not gotten around to fine tuning memory yet ). If you have set it to the 4 4 4 12 put in the +.4 to run it per the manuf recommendations. Make sure the memory mulitplier is always at 2.0 , if the board resets or you clear the cmos it likes to go to auto and if you do not catch it, it will try to run the memory too fast. In my version of the bios raising memory voltage above 2.2V results in all kinds of warning, and in the PC Health menu the memory voltage will say "Fail" in red, ignore it.

1/2 agree with Darth Bobo, increase the MCH/northbridge (the memory controller chip) by +.1. If we still run into problems perhaps the FSB voltage but I do not like to mess with that unless a last resort. My board does 475FSB with memory running at 950MHz without having to adjust FSB voltage but every board is different so something to keep in our back pocket. If none of the above/below seem to help, sure give it +.1v and redo the procedure. or if you want go ahead, but remember you increased it and if it appears not to help, put it back. If it does help, well I was wrong and that is nothing new, keep it and carry on !

Now lets split the difference 400 no, 333 yes, try 366ish and see what happens.

If there is trouble give the MCH voltage another additional +.1 V. Try again, if no joy reduce MCH voltage back to where it was.

Load coretemp and let me know your idle and load temps.
http://www.thecoolest.zerobrains.com/CoreTemp/

Just download, unzip and run the exe.

Stick your finger on the side of the heatpipe/heatsink located closest to the middle of the board, can you count to 5 and keep your finger on it ? Could you make it to a 10 count without burning your finger ? (This is not a contest, if it gets very uncomfortable, that counts and pull your finger off.)


The best computer in the house is the one in your head, take notes and be methodical, and do not change anything you do not understand, auto works remarkabley well most of the time, and change only one thing (at most 2 if you know exactly what you are doing) at a time and if it does not help, put it back, and try something else.
 
thanks for all of that info. I'll try over the next few days to see what I can get it to do.
 
Bill,

Just wanted to report back. My 74GB raptor died so I haven't had much of a chance to tinker with this.

I did pretty much everything you said and I'm up to 380fsb. so that's 3.04GHz or so. I'll try to get a little more out of it when I think it's stable.

thanks again.
 
Another quick question to Bill (if you're still out there) or anyone else.

I'm doing all of this with just 2x1GB of my crucial ram installed. I've got another 2x1GB set to install. Should I get everything stable with the 2GB then install the other 2GB or would it be better to back off everything and start over with the full 4GB installed?
 
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