ASUS P8P67 Pro/Evo/Deluxe OC discussion thread

[st0ned]

Which board have you got? With the Delux I would think you could flash all the way back. If it's PRO/EVO then I would think 1204/1253 should be doable from 1302.

I'm on a EVO flashed back to 1204 and running stable at my old settings ( I'm even trying to improve ram to 2133 ). Asus did a lausy job on 1302

[Gr1mR34p3r]

Anyone tested how good Marvell controller is, tests show poor write performance:
http://www.bjorn3d.com/read.php?cID=1973&pageID=9979
http://www.bit-tech.net/hardware/mot...p8p67-review/6

[tentp0le]

Anyone knows exactly which files you're suppose to put on a USB pin, when attempting the Crash free bios feature?

On the MB CD there is 2 .ROM files, which I think is obvious, but is there anything else you would need?
Also, does it matter which USB port you're using?

I think I have a fail bios update when I was trying the 1302 bios yesterday.
The PC just powers on with the "CPU led" lit, and the error code "03" on the barcode.

[coolhandluke41]

Anyone tested how good Marvell controller is, tests show poor write performance:
http://www.bjorn3d.com/read.php?cID=1973&pageID=9979
http://www.bit-tech.net/hardware/mot...p8p67-review/6

Yes Marvell-suck and i'm not sure if this is driver issue or what,thank you asus for given us two extra sata ports that are slower than sata II

[LagunaX]

Anyone tested how good Marvell controller is, tests show poor write performance:
http://www.bjorn3d.com/read.php?cID=1973&pageID=9979
http://www.bit-tech.net/hardware/mot...p8p67-review/6

Put my 2 optical drives onto the Marvell sata ports - a performance match made in heaven!

[Darkstormz]

Put my 2 optical drives onto the Marvell sata ports - a performance match made in heaven!

So did I

[coolhandluke41]

i thought that ATAPI is nor supported by Marvell..can you disable the controller and have atapi running on this ports?

[xEnergie]

Just trying to dial in some clocks and was wondering if you guys could give me some tips. I'd like to stay between 4.5-4.8 with a max vcore of 1.350 and here's what I've got so far at 4.5. Also, am I ok to disable the JMB controller since I'm not going to use raid? To above poster, the marvell controller has to be enabled if you want your drives to work.

CPU Ratio = 45
BIOS Vcore = Manual 1.335
DramV = 1.525
Dram Speed = 6.8.6.24 1T @ 1600Mhz
4-Load Vcore = 1.32
Idle Vcore = 1.328-1.336 (varies)

Load-Line Calibration = Ultra High
Current Capability = 100%
Frequency = Auto
Phase Control = Manual - Extreme
Duty Control = Extreme
Vccsa = Auto
Vccio = Auto
PLL Voltage = Auto
PCH Voltage = Auto

[Darkstormz]

Core i7 2600K @ 5GHz
Corsair Vengeance 16GB @ 2133MHz CL 9-10-9-27 1T

[poke349]

Just trying to dial in some clocks and was wondering if you guys could give me some tips. I'd like to stay between 4.5-4.8 with a max vcore of 1.350 and here's what I've got so far at 4.5. Also, am I ok to disable the JMB controller since I'm not going to use raid? To above poster, the marvell controller has to be enabled if you want your drives to work.

CPU Ratio = 45
BIOS Vcore = Manual 1.335
DramV = 1.525
Dram Speed = 6.8.6.24 1T @ 1600Mhz
4-Load Vcore = 1.32
Idle Vcore = 1.328-1.336 (varies)

Load-Line Calibration = Ultra High
Current Capability = 100%
Frequency = Auto
Phase Control = Manual - Extreme
Duty Control = Extreme
Vccsa = Auto
Vccio = Auto
PLL Voltage = Auto
PCH Voltage = Auto

You have LLC on Ultra High and your load vcore doesn't go up from the base setting (1.335v)?

Even when I disable LLC (Regular), the vcore still goes up under load.

Right now my 24/7 settings are:

4.4 GHz
(4 hours prime/LinX AVX stable @ 4.7 GHz with these settings - I need the safety margin since I'm doing important stuff...)

Base CPU vcore = 1.275 (1.165 default with +0.110 offset)
Base Clock = 100 MHz
LLC = Regular
Current = 100%
Frequency Mode = 380 KHz
Phase Control = Manual - Fast
Duty Control = T.Probe


Load vcore is 1.360v.

I disabled LLC because it drops the voltage (without dropping the frequency) when the load goes down.

[xEnergie]

running prime/linx to test as my load and it doesn't seem to budge my vcore significantly at all :T it just jumps between 1.320 - 1.336. pretty much stays the same as my idle voltage. i was doing some tests earlier today and prime bsod's where linx passed 25 runs. need more tweaking! if you're going to use an offset voltage, how do you set your base cpu vcore prior? whenever i try and select offset there's no option for the base cpu, only offset +/-.

[poke349]

running prime/linx to test as my load and it doesn't seem to budge my vcore significantly at all :T it just jumps between 1.320 - 1.336. pretty much stays the same as my idle voltage. i was doing some tests earlier today and prime bsod's where linx passed 25 runs. need more tweaking! if you're going to use an offset voltage, how do you set your base cpu vcore prior? whenever i try and select offset there's no option for the base cpu, only offset +/-.

The base vcore is the stock value. It can't be changed and it varies by processor. To figure out what it is, set the offset to 0, boot into windows, and see what TurboV shows.
The offset will be added/subtracted from that value.

As far as I can tell, using offset to get to XX vcore vs. using manual setting to get XX vcore has no difference under load. Offset will allow the vcore to drop while it's idle, so I prefer offset.

[xEnergie]

Ah ic, is the TurboV you're talking about part of that asus suite? If so, I may have to install it to see. I'm basing all my info on what cpuz shows me with regards to cpu load voltage right now. Still puzzled as to why my vcore doesn't increase during load. I just downloaded that y cruncher program in your sig and it's barely loading my system to 55 degrees. I'll reboot into optimized defaults and check out what my base vcore is with 0 offset once it's done the stress test. also, when i set it to stress test, it asked me how much ram. i have 4gb installed so i selected 3gb to test and leave the rest for the os, would that be the correct choice? the next option was 5gb which i dont have.

[poke349]

Ah ic, is the TurboV you're talking about part of that asus suite? If so, I may have to install it to see. I'm basing all my info on what cpuz shows me with regards to cpu load voltage right now. Still puzzled as to why my vcore doesn't increase during load. I just downloaded that y cruncher program in your sig and it's barely loading my system to 55 degrees. I'll reboot into optimized defaults and check out what my base vcore is with 0 offset once it's done the stress test. also, when i set it to stress test, it asked me how much ram. i have 4gb installed so i selected 3gb to test and leave the rest for the os, would that be the correct choice? the next option was 5gb which i dont have.

Make sure you disable the auto-tuner. I remember the when I setup my build, the BIOS decided it wanted to clock up to 4 GHz (and BCLK to 103)... I didn't even know it until opened up CPUz...


Ah, the values were intentionally set to be slightly less than the common ram configurations. That's because the OS is gonna hold a chunk of it, so the program can't use all the ram in the machine.

So 3GB is for 4GB of ram.
5GB is for 6GB of ram.
7GB is for 8...
10 is for 12...
14 is for 16...
etc...

And it goes all the way up to 136GB for 144GB systems (18 x 8GB Gainestown and Westmere machines...)

[chestnut]

Hey, no one seemed to know when I asked previously...but perhaps people have a better understanding of it now.

Does turning up the Digi+VRM options put more strain on the cpu and or mobo? What are safe settings? Like that of vcore running v1.35 -> v1.4 at 24/7 is safe.

[xEnergie]

yikes! i just installed sp1 and with avx enabled i my temps up a bit, and noticeably, 50 more gflops in linx
I tried your offset and with 1.275 vcore it loads to 1.360 - 1.400v. is this normal for it to fluctuate so much during load? my previous settings were pretty much rock solid from idle/load.
but the good thing, like you said, my idle voltage is much lower which is really gratifying

[poke349]

yikes! i just installed sp1 and with avx enabled i my temps up a bit, and noticeably, 50 more gflops in linx
I tried your offset and with 1.275 vcore it loads to 1.360 - 1.400v. is this normal for it to fluctuate so much during load? my previous settings were pretty much rock solid from idle/load.
but the good thing, like you said, my idle voltage is much lower which is really gratifying

Yes, it's normal and it seems to depend on how intensive the load is. This Sandy Bridge line has a built-in stock LLC unlike the original Core i7s. That standard LLC setting would be the "Regular" setting.

Personally, I don't like the LLC is because it will lower your voltage without lowering your frequency.
A lot of people (including me) were finding out that OCs that were stable under prime/LinX would fail instantly when put under a single core load.

That's because the LLC lowers the voltage when the load is light - but the frequency is maintained...

lowered vcore + same OC'ed frequency = BSOD


If you go back a page or two on this thread (as well as the BIOS thread), you'll see a few people complaining about it.

[xEnergie]

yea i read that, but didn't quite understand at the time since i was just waiting for my board to ship. but now with theory and practical knowledge, it makes total sense. but im just curious on how much the load voltage will go up to since you say it depends on how intensive the load is. also, do you measure your load voltage at peak then? or just an average you think that seems consistent? ah, so many questions, been a while since i've jumped on new hardware :P

[st0ned]

Not bad for 100€ sticks It's also Linx stable

[Leeghoofd]

Not bad for 100€ sticks It's also Linx stable

which sticks are you referring too ?

[st0ned]

which sticks are you referring too ?

Gskill ripjawX cl9 1600Mhz , doing cl10 2133

[Sam_oslo]

Gskill ripjawX cl9 1600Mhz , doing cl10 2133

I've been looking into these actually, but couldn't find any good tests. That sounds really good, but I hope that's not with 1.65v

Can you post some more stuff, with some memtest or LinX? Don't keep all the info for yourself

[st0ned]

I didn't took linx screenshot bue I might do it in my search for a lower vCore.

This are 25linx runs stable number:

1600 9-9-9-24 1.5 [default]

1866 10-11-10-28 1.55v



1866 9-11-9-26 1.65v

I dont have pics

2133 10-12-26 1.65v

I'll post pics as soon as I end up testing


1.65v seems pretty safe to me, or ?

In SB so far, frequency >>>> timings

[Sam_oslo]

SB doesn't care much about the CL, you can loosen up timings without loosing much. It's more about brute speed.

1866 CL10 1.55v is a really good start for such a cheap RAM. SB has introduced such a great IMC-improvement that, that's a total overkill for 24/7 use, and all desktop applications already.
If you want to test more, see how far they can go with 1.50v.
If they can do 2133 under 1.55v, with whatever timing, just loosen up as much as you can, then it would be really great.

You can bench higher, but I would keep it under 1.55v, rather at 1.50v, for 24/7. Until we get to know more about the long term effect.

[Pacha]

Is it inevitable to have 1600MHz idle freq or does disabling Speedstep and all C-states etc let you run the CPU at max freq when idling?