ASUS P8P67 Pro/Evo/Deluxe OC discussion thread

[lowfat]

Is there any sort of way I can flash back to an older BIOS? I updated to the 1204 and can no longer boot from my drive.

[orion23]

Praz can you give as some bios offset settings for X48,X49 or higher ? ,i like to give that a try
thanks

I think you really need to stablish what your stable overclock requires in terms of CPU Voltage.
Let's say, 1.35V or so.
The LLC has a lot to do with the offset voltage, the higher the LLC, the more the CPU voltage will be increased using the offset value.

I know my CPU requires about 1.4V to be stable @ 4.8ghz
With Medium LLC and an offset value of + .90 I get 1.4V during LinX testing. (+.110 for Prime95)
With Ultra High LLC, I need an offset of about .040 to get a load of 1.4.08 V.
What I don't understand is why Linx can request a higher CPU voltage using a lower offset value, while Prime95 will crash. I need to set the offset higher just for prime95.
So, +.040 for Linx, and +.055 for Prime95

CPU will idle @ 1600mhz using as little as 1.096v and during load it will go up to 1.4 v.
You really need to play with some values....

[Splave]

Is there any sort of way I can flash back to an older BIOS? I updated to the 1204 and can no longer boot from my drive.

ezflash ?

[lowfat]

ezflash ?

It nor the lame bupdater will allow you to flash to an older bios.

[DavidNJ]

Does anyone here have the mouse stutter problem where the mouse freezes for a second or two? I've created a separate thread but no answers so far (http://www.microsoft.com/whdc/device...e/GPT_FAQ.mspx).
_

[coolhandluke41]

I think you really need to stablish what your stable overclock requires in terms of CPU Voltage.
Let's say, 1.35V or so.
The LLC has a lot to do with the offset voltage, the higher the LLC, the more the CPU voltage will be increased using the offset value.

I know my CPU requires about 1.4V to be stable @ 4.8ghz
With Medium LLC and an offset value of + .90 I get 1.4V during LinX testing. (+.110 for Prime95)
With Ultra High LLC, I need an offset of about .040 to get a load of 1.4.08 V.
What I don't understand is why Linx can request a higher CPU voltage using a lower offset value, while Prime95 will crash. I need to set the offset higher just for prime95.
So, +.040 for Linx, and +.055 for Prime95

CPU will idle @ 1600mhz using as little as 1.096v and during load it will go up to 1.4 v.
You really need to play with some values....

Thank you orion23 ,thats what i was looking for ..ball park figure and yes I'm running on Ultra LLC all the way up to 5.0 and Extrime for 5.1
here are some final stable ( P95 blend ) v for me
@X47 1.355v
@X48 1.38V
@X50 1.45V
@X51 1.49V
all of the above running RAM @1866
today I got my ram to 2133


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[coolhandluke41]

Does anyone here have the mouse stutter problem where the mouse freezes for a second or two? I've created a separate thread but no answers so far (http://www.microsoft.com/whdc/device...e/GPT_FAQ.mspx).
_

Do you have SSD?

[nyeah]

It nor the lame bupdater will allow you to flash to an older bios.

i flash to older BIOS with ezflash without problem (1253->1204)

[Sam_oslo]

I think you really need to stablish what your stable overclock requires in terms of CPU Voltage.
Let's say, 1.35V or so.
The LLC has a lot to do with the offset voltage, the higher the LLC, the more the CPU voltage will be increased using the offset value.

I know my CPU requires about 1.4V to be stable @ 4.8ghz
With Medium LLC and an offset value of + .90 I get 1.4V during LinX testing. (+.110 for Prime95)
With Ultra High LLC, I need an offset of about .040 to get a load of 1.4.08 V.
What I don't understand is why Linx can request a higher CPU voltage using a lower offset value, while Prime95 will crash. I need to set the offset higher just for prime95.
So, +.040 for Linx, and +.055 for Prime95CPU will idle @ 1600mhz using as little as 1.096v and during load it will go up to 1.4 v.
You really need to play with some values....

Intel has always recommended standard LLC, and it idles with higher vCore. Explaining the reason will get long, but a short one, when you determine the vCore under full-load (LinX) and full vCore, it may still be unstable for lighter load, because the vCore doesn't always change proportionally.
With very low idle-vCore, you may also get BSOD at idle, light-loads, or sudden-load too, sometimes. Because you haven't necessarily tested all these scenarios when you test it under full load(LinX) and full vCore.

All these may change with those new buzz-word, like DIGI+ VRM, etc .., because the MB seams to be getting more responsive for supplying and regulating voltages, but Intel still recommends standard LLC, and it remains to be seen how it will work for real-word 24/7 use on these MBs.

[Kimi.Rk]

Hi! I wanted to know when Asus plans to release 13xx bios?
I can not use ram-F3-17066CL8D 4Gbps g.skill! very unstable .. hiper chip? This ram is on QVL p8p67 deluxe.
excuse my English.

[lowfat]

i flash to older BIOS with ezflash without problem (1253->1204)

Because 1204 is actually newer than 1253.

[orion23]

Intel has always recommended standard LLC, and it idles with higher vCore. Explaining the reason will get long, but a short one, when you determine the vCore under full-load (LinX) and full vCore, it may still be unstable for lighter load, because the vCore doesn't always change proportionally.
With very low idle-vCore, you may also get BSOD at idle, light-loads, or sudden-load too, sometimes. Because you haven't necessarily tested all these scenarios when you test it under full load(LinX) and full vCore.

All these may change with those new buzz-word, like DIGI+ VRM, etc .., because the MB seams to be getting more responsive for supplying and regulating voltages, but Intel still recommends standard LLC, and it remains to be seen how it will work for real-word 24/7 use on these MBs.

Thanks for the info...I like the way my PC is handling this offset mode @ 4.8ghz...I'll try and find the same balance using standard or a lower LLC setting.

[coolhandluke41]

@Sam_oslo ..yep that's what I'm getting ( BSOD ) @ idle or "light-loads"
@orion23 .. I need about the same V for my chip so i'm just curious what you come up with
here is @ X48 (1.00V idle, 1.4V load ):
AI Overclock Tuner = Manual
BCLK/PEG Frequency = 100
Turbo Ratio = Per Cores = 48
Internal PLL Overvoltage = Enabled
Memory Frequency = DDR3-1866
EPU Power Saving Mode = Disabled
DRAM Timing Control = 8-9-8-24-1T
Load Line Calibration = Ultra High
Phase Control = Extreme
Duty Control = Extreme
CPU Voltage = Offset Mode = .030V
DRAM Voltage = 1.55V
Just change CPU capability to 110% I like to see if that makes any difference

[Gr1mR34p3r]

How do you stress test these CPU's, because I find it very difficult to see what is stable other than just doing regular work.
I can 100% state that IntelBurnTest 20x Maximum doesn't cut it.
Examples:
46x100 1.270V LLC Auto (1.248-1.264), which is the same as Ultra High , IBT 20x max stable, but not stable listening to Winamp or playing Dead Space, requires 1.290V to be 24/7 stable
46x100 1.250V LLC Extreme (1.248-1.264V), IBT 20x max stable, BSOD in idle, didn't test how much it really needs, probably 1.260V
46x100 -0.015V LLC Auto (1.240-1.256V), IBT 20x max stable, already got BSOD in idle
48x100 +0.045V LLC Auto (1.296-1.328), IBT 20x max stable, BSOD 0x00000124 while watching movie

But here are my estimates to what would be stable in my experience:
Offset voltage LLC Auto
2x IBT max OK, up by 0.02V to be 100% stable
20x IBT max OK, up by 0.01V to be 100% stable

Manual voltage LLC Auto
5x IBT max OK, up by 0.03V to be 100% stable (46x100 1.260V required 1.290V, and 48x100 1.320V required 1.350V)
20x IBT max OK, up by 0.02V to be 100% stable

But of course some better stress testing program would be better.
About BSOD, I always get 0x00000124, which would suggest that if you get this, you must up the vcore.

BIOS/CPU-Z voltage findings
1.290V set in BIOS
Auto: 1.264-1.280
High: 1.232-1.248
Ultra High: 1.264-1.280
Extreme: 1.288-1.304
Voltage also get higher for short period of time, these are just the voltages that stay on longest, usually the difference between lowest and highest is 0.016V.

[orion23]

@Sam_oslo ..yep that's what I'm getting ( BSOD ) @ idle or "light-loads"
@orion23 .. I need about the same V for my chip so i'm just curious what you come up with
here is @ X48 (1.00V idle, 1.4V load ):
AI Overclock Tuner = Manual
BCLK/PEG Frequency = 100
Turbo Ratio = Per Cores = 48
Internal PLL Overvoltage = Enabled
Memory Frequency = DDR3-1866
EPU Power Saving Mode = Disabled
DRAM Timing Control = 8-9-8-24-1T
Load Line Calibration = Ultra High
Phase Control = Extreme
Duty Control = Extreme
CPU Voltage = Offset Mode = .030V
DRAM Voltage = 1.55V
Just change CPU capability to 110% I like to see if that makes any difference

Almost identical settings, except for:

CPU capability : 130%
Offset mode voltage: + .050 (tried .040 and .045 and it crashed on me within 30 seconds...)

This results in a voltage load of up to 1.434 using Linx....
up to 1.408 using Prime95 Small FFts

I could reduce the offset for Linx, but then Prime95 will fail.

Using a different LLC, such as medium, I need about a +110 offset setting.

BTW, I've been using my PC nonstop for the past 2 days and no BSOD for me using the offset mode even with the Ultra High LLC!

[MaStA]

How do you stress test these CPU's, because I find it very difficult to see what is stable other than just doing regular work.

Prime95 has always seemed to do the best for me.

[Gr1mR34p3r]

Small or Blend, is overnight enough?

[MaStA]

Small or Blend, is overnight enough?

I've always just used the Blend test. Eight hours or more should be good.

[Forceman]

Small or Blend, is overnight enough?

Small seems to be the most stressful.

[Sam_oslo]

If you guys are trying to get power savings with offset mode, then a low-volt 24/7 setup can be a good alternative.
Many of these chips should do 4-4.2GHz with low-volt, easily. Anything over 4Ghz would be overkill for most desktop application, anyways.

I've used manual-vCore and Load Line Calibration = Ultra High for @4.2GHz 1.19v/1.17v (Idle/load) and tested it with 30-min Prime.
I used it for several days without any problem, and then increased the vCore by one notch, just to keep it on the sure side, and call it stable, until it crashes on me.

The best part, it idles with 1.19-1.20v with little heat and power-usage, and all fans are running quietly at ~60%, etc ..
I've under-volted almost everything else too, including the PCH=1.0v to reduce leakage. Here it it's:

[coolhandluke41]

Almost identical settings, except for:

CPU capability : 130%
Offset mode voltage: + .050 (tried .040 and .045 and it crashed on me within 30 seconds...)

This results in a voltage load of up to 1.434 using Linx....
up to 1.408 using Prime95 Small FFts

I could reduce the offset for Linx, but then Prime95 will fail.

Using a different LLC, such as medium, I need about a +110 offset setting.

BTW, I've been using my PC nonstop for the past 2 days and no BSOD for me using the offset mode even with the Ultra High LLC!

I just run few tests with the settings i mention, P95 blend and Linx stable.now is the question .. if it's going to crap on me in idle ,but with CPU capability @110% so far no problem
@Sam_oslo..I didn't get SB to run @4.0



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[Sam_oslo]

^^ What are you going to do with that 4.8GHz that you can't do with 4.2GHz for 24/7? Besides, that seams to be buggy at idle, but try the 130% too.

You have 3 options: @4.8GHz with a manual high idle/load vCore, or with low-idle offset mode that seams to be buggy at idle, and can crash on you anytime, or a @4-4.2GHz low-volt manual vCore. You choose yourself, but you have the 140% to try too, LOL.

[coolhandluke41]

^^ What are you going to do with that 4.8GHz that you can't do with 4.2GHz for 24/7? Besides, that seams to be buggy at idle, but try the 130% too.

You have 3 options: @4.8GHz with a manual high idle/load vCore, or with low-idle offset mode that seams to be buggy at idle, and can crash on you anytime, or a @4-4.2GHz low-volt manual vCore. You choose yourself, but you have the 140% to try too, LOL.

110% is no go now @130%....

P.S.still on 1053 bios

[Sam_oslo]

110% is no go now @130%....

P.S.still on 1053 bios

That's OK. You asked for fun and got it, a bunch of it.
I think it will be difficult, unless these new DIGI+ VRM-buzz has somehow changed the game, but don't give up yet.
If you can find a way around it, that low idle-vCore will be a really good option for high 24/7 OCs.

[coolhandluke41]

That's OK. You asked for fun and got it, a bunch of it.
I think it will be difficult, unless these new DIGI+ VRM-buzz has somehow changed the game, but don't give up yet.
If you can find a way around it, that low idle-vCore will be a really good option for high 24/7 OCs.

That's what is all about it and believe me there is no reason to "give up"