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OCing the Processor...

post #1 of 12
10/13/09 at 3:34pm
Thread Starter 
So when I get my M17X, I plan on doing this since I am getting the P8600.

I decided that I will be OCing it to 2.8GHz which I think its safe and sufficient for what I will be doing.

I am wondering if I can do this RIGHT AWAY when I get the machine, or do I need to break the processor in first?

Also, when OCing the processor in the BIOS, what exactly do I have to change? Or is it just change the speed, and all the other settings conform to the new speed, like FSB auto updating with higher settings, etc.
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post #2 of 12
10/13/09 at 10:38pm
Make sure everything works before making changes. Do you have the Kingston memory already? Which memory is coming with the system?
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post #3 of 12
10/13/09 at 11:06pm
You can't do a BIOS OC with that CPU as far as I know. setfsb is your best bet.
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post #4 of 12
10/14/09 at 1:33am
Thread Starter 
Quote:
Originally Posted by NWGuru View Post
Make sure everything works before making changes. Do you have the Kingston memory already? Which memory is coming with the system?
I got the one you recommended. 4 gigs of the Kingston HyperX at 1333. It was delivered last Saturday. Laptop coming soon I hope... laptop is coming with 1066 4 gigs stock
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post #5 of 12
10/14/09 at 6:28am
Quote:
Originally Posted by powerpack View Post
You can't do a BIOS OC with that CPU as far as I know. setfsb is your best bet.
Lat time I checked setfsb doesn't work with nVidia chipsets. I don't know if that has changed since.

Quote:
Originally Posted by Turmoil View Post
I got the one you recommended. 4 gigs of the Kingston HyperX at 1333. It was delivered last Saturday. Laptop coming soon I hope... laptop is coming with 1066 4 gigs stock
With the Kingston memory, when you go into the bios unlink the memory and fsb. Then try 2 settings (fsb:mem) 1248:1248 and 1248:1333. Both should achieve 2.8Ghz but you'll need to test it first. If you try OC'ing with your 1066 memory then I would suggest leaving the memory alone. The timings with the memory will go out of whack any higher than 1066.

The key with OC'ing is making sure you don't end up with a bad memory divisor. It will just cause instability. A 1:2 ratio seems to be stable with these systems. I ideally 1:1 would give us the best performance but it's impossible to achieve with these systems. Use a program like cpu-z to chek you memory divisor if you don't feel like doing the math.

On last thing. If you get failed boots because of a bad OC it will automatically reset itself to default after the third failed boot. Don't both trying to find the cmos battery and unplugging it. Although that works it will set the whole bios to factory default versus just the OC settings. Good luck!
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post #6 of 12
10/14/09 at 7:10pm
Thanks for the chipset info.

On a 1:1 fsb:RAM you realize if the RAM is 1066Mhz the fsb would need to be 2133Mhz, and that would have the P8600 (x9) running at 4.8Ghz. That would be sweet but don't see happening.

In this circumstance real world 1:2 is better than 1:1. I mean you can get 1:1 just set the RAM to run at 533Mhz and bingo 1:1. But I don't recommend.
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post #7 of 12
10/14/09 at 7:21pm
Quote:
Originally Posted by powerpack View Post
Thanks for the chipset info.

On a 1:1 fsb:RAM you realize if the RAM is 1066Mhz the fsb would need to be 2133Mhz, and that would have the P8600 (x9) running at 4.8Ghz. That would be sweet but don't see happening.

In this circumstance real world 1:2 is better than 1:1. I mean you can get 1:1 just set the RAM to run at 533Mhz and bingo 1:1. But I don't recommend.
The lowest freq the mem will run at on this system is 800Mhz and the fastest I've hit with the FSB is 1500Mhz. There is a hidden feature I found in the bios that will automatically set your divider for you but I haven't been able to unlock it.

By any chance are you looking into getting this system?
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post #8 of 12
10/14/09 at 7:39pm
I am always looking always looking into performance. I am just learning. I had no idea this had the kind of BIOS options you mentioned. That definitely a good thing and really has my attention.

On the divider thing you can only unlock if you have an Xtreme CPU. I knew that with first post. I didn't know all the rest. You say BIOS lets you do fsb OC. Cool.
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post #9 of 12
10/14/09 at 7:50pm
No. I tested both the x9100 and the qx9300. Having the extreme cpu simply gives you an option to change your multiplier in the bios. So basically you can set fsb and mem freq for all procs and you have the addition of the multiplier with extreme procs.

Here's the highest I was able to hit with the qx9300. Unfortunately I lasted only 2 minutes before BSOD.

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post #10 of 12
10/14/09 at 8:21pm
OK well you know this baddog! What is the advantage of the automatic? Do you think integer dividers work better?

What was your RAM set at when you clocked that high? I mean with the speed of RAM I would go for the high CPU OC before I pushed the RAM. I start having stability issues at or above 300Mhz bus.
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post #11 of 12
10/14/09 at 9:31pm
Quote:
Originally Posted by powerpack View Post
OK well you know this baddog! What is the advantage of the automatic? Do you think integer dividers work better?
I was hoping it would but I'm not sure. I really wanted to test it.

Quote:
Originally Posted by powerpack View Post
What was your RAM set at when you clocked that high? I mean with the speed of RAM I would go for the high CPU OC before I pushed the RAM. I start having stability issues at or above 300Mhz bus.
I would have set it the same as the fsb for that OC.

Overall I did hundreds of tests literally. Tried all different divisors. Best ones were 1:2 and 4:5.
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post #12 of 12
10/14/09 at 10:44pm
With that OC is 5:9 an option? If so RAM would be at 1044Mhz? See only want to deal with one OC at a time to get stability.
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