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Help 4.6Ghz 2600k Asus P8P67

post #1 of 9
Thread Starter 
Hey guys I got few questions about oc'ing 2600k on Asus P8P67 board.

I'm trying to get 4.6 stable and here are my bios setting
Vcore - offset + .020 (HWMonitor show 1.38v Max)
RAM - stock profile
LLC - Ultra High
VRM Frequency - VRM Fixed Frequency mode 350
Phase control - Extreme
Duty Control - Extreme
Others on stock/auto

1. I want to know when to turn on internal PLL Overvoltage? 4.5ghz+, 4.7+, or 4.9+? (I have read couple guides, but one say 4.7ghz+ and the other say 4.9ghz+) Do I need Internal PLL enable for 4.6Ghz?
2. What should I set for CPU current capability at 4.6Ghz?
3. Should I change the CPU PLL voltage? Some said that 1.7000 is good.
4. Can someone explain a little on how the vcore offset mode work? please.

Edit: System crashes sometime when gaming with NO BSOD, it just shuts off or restart.
Thanks in advance.
Edited by Silver_WRX02 - 10/29/11 at 12:22am
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post #2 of 9
you may need pll, it seems different for all. also, might need more vcore, +.04 or maybe more.
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post #3 of 9
1)Yes you need it on for anything over 4.5ghz
2)I really don't have any experience with that option
3)I run at 1.80 or leave at auto
4)Vcore offset is never really explained you just have to mess with it, if in doubt leave on auto.
Oh and the random resets could be your PSU,a GTX480 pulls a few watts...and it's pulling on the CPU. Although it seems you have head room, you can still check your event log to see what caused the reset.
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post #4 of 9
Offset requires aproximately a short novel to fully explain. If you look around a bit, in the general cpu & mobo overclocking threads, you'll come across it sooner or later.

The Cole's Notes version - your cpu is programmed for a certain voltage at a certain multi - this is called VID or SVID. It's NOT the same as vcore. Offset compensates for the difference between SVID and vcore, it could be + or -. LLC level also comes into the equation/calculation.

More than that, and I'd have to start charging by the minute

If I come across it again, I'll link it in here.
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post #5 of 9
Thread Starter 
Quote:
Originally Posted by PROBN4LYFE View Post
1)Yes you need it on for anything over 4.5ghz
2)I really don't have any experience with that option
3)I run at 1.80 or leave at auto
4)Vcore offset is never really explained you just have to mess with it, if in doubt leave on auto.
Oh and the random resets could be your PSU,a GTX480 pulls a few watts...and it's pulling on the CPU. Although it seems you have head room, you can still check your event log to see what caused the reset.
That's what I thought that PSU is not strong enough, cuz the GTX 480 was oc @ 825mhz core. I already set it back to stock speed and see if the system will crash during games or not.

Quote:
Originally Posted by keto View Post
Offset requires aproximately a short novel to fully explain. If you look around a bit, in the general cpu & mobo overclocking threads, you'll come across it sooner or later.

The Cole's Notes version - your cpu is programmed for a certain voltage at a certain multi - this is called VID or SVID. It's NOT the same as vcore. Offset compensates for the difference between SVID and vcore, it could be + or -. LLC level also comes into the equation/calculation.

More than that, and I'd have to start charging by the minute

If I come across it again, I'll link it in here.
So only the manual mode can set vcore and offset mode will follow the SVID and the +/- voltage?

Thanks guys + rep.

Any more suggestions are welcome. Thanks
Edited by Silver_WRX02 - 10/29/11 at 1:22pm
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post #6 of 9
Quote:
Originally Posted by Silver_WRX02 View Post
That's what I thought that PSU is not strong enough, cuz the GTX 480 was oc @ 825mhz core. I already set it back to stock speed and see if the system will crash during games or not.



So only the manual mode can set vcore and offset mode will follow the SVID and the +/- voltage?

Thanks guys + rep.

Any more suggestions are welcome. Thanks
Thanks for the rep. Yes, you've essentially nailed the concept right on the head.

Manual = set vcore, and also LLC level, to reach final idle + load voltages.

Offset = computer sets vcore based on SVID + multi, you can still use LLC + offset (unless you have Gigabyte) to arrive at your desired load vcore, and aproximate your idle vcore.
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post #7 of 9
These guys are crazy, you do not need pll overvoltage for a 46 multi. You should only need it for 48 or more. If you find that all of a sudden when upping the multi that you can't post or boot into windows then try pll overvoltage. It isn't going to help with stability otherwise. You'll know when you need it.

If I were you I wouldn't even use LLC. You shouldn't need it and as is you are feeding that chip more than it should need under load.

Start with the offset at .06 or .07 and loadline set to regular. The offset is just how much higher that you want the VID. If I'm not mistaken you need to use the offset if you want the voltage to drop when idle with speedstep enabled.
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post #8 of 9
Thread Starter 
I think I have a game and normal usage stable for now with offset + .005, PLL disable, CPU PLL 1.7000v, LLC Ultra High. I have tried LLC High, but system crashed. I just reinstall Windows and now I'm gonna leave the system on this setting and see if any crash occur.
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post #9 of 9
Prime Blend is great for stress testing Sandybridge btw. If you can pass four or so hours of that you're fine.
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