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**Official ASUS P5Q PRO Turbo/PRO/Turbo Owners Club** (All ASUS P45 Mobo Owners Welcome!) - Page 158

Poll Results: Do you prefer the new OCN?

 
  • 35% (32)
    Yes!
  • 15% (14)
    No!
  • 14% (13)
    Yes and No!
  • 34% (31)
    Don't give a damn about it! (LOL)
90 Total Votes  
post #1571 of 6468
Quote:
Originally Posted by turrican9 View Post
I'm shooting for highest possible Prime95 Large FFTs stable FSB on my P5Q Pro Turbo now. Have of course removed two RAM sticks and are running with 4GB.

So, I'm at 465FSB right now. FSB Volts are 1.3v and GTL at 0.65x. 1.3v x0.63 was not stable. So what happens when you increase FSB Volts... CPU getting hotter? If I go 'crazy' with let's say 1.4v x0.65 it is 0.91 Volts.. Not a very big difference from 1.3v x0.65 = 0.845 Volts...

So what is the big drawback? CPU heat, or other things?
By further upping vFSB you will not stabilise the core that errors in P95 LARGE FFT as the issue is only GTL voltage related..

READ THIS TEXT THAT I HAVE WROTE IN PRIVATE MESSAGE TO ONE OCN NEMBER:

C2Q CPU's are in fact a two C2 Duos on the same pcb..

So as much as they are mached together to be as similar as they can they are in fact different..

That difference comes into play when you OC a Quad as each of those duals have sweetspots for GTL voltage of their own..

Your board is great in term of GTL's as you can tune GTL voltage for each core separatley..

My board lacks of those advance GTL tunungs as it has GTL voltage same for all 4 cores and only three settings 0.61x,0.63x & 0.65x and that's why I'm limited to 459MHz FSB as I cant tune GTL voltage for the exact core that errors in P95 Large FFT test..

I've posted previously how actuall GTL voltage is being calculated (vFSB x CPU GTL multi eg. 0.67 = actuall GTL voltage)

Intel states that default GTL voltage for 45nm CPU is 1.1V FSBv x 0.67 CPU GTL multi= 0.737V.

When you add vFSB due high FSB OCing you're actually changing real GTL voltage eg. If you use 1.25V FSB and default GTL multi of 0.67 your real GTL voltage is 0.837V and not default 0.737V and that could mess up your CPU's FSB signal and couse errors or a crash..

Like I've said ideal would be keeping actuall CPU GTL voltage @ 0.737V by using GTL multies to compensate for higher FSB/VTT voltage but sometimes CPU's like a bit higher actuall GTL voltage when OC'd @ high FSB in between 0.790V - 0.830V (usually over 450MHz FSB)..

So ti's really matter of finding a right GTL voltage for each core(or pair of cores as some mobos support adjusting it for each pair CPU GTL 0/2 & 1/3 options in BIOS) and it's in reality a metter of trial & error really..

To find which core is a troublemaker use P95 Large FFT test for @ least 6h (I use 12h) and if some of cores errors just up or lower GTL multi for it and test again..

People think that just by upping vFSB/VTT they will stabilize it but in fact they need to adjust GTL's as with additional VTT they could destabilize other cores as well..

Hope I've cleared it out for you..

CHEERS..
     
CPUMotherboardGraphicsRAM
E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
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Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
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post #1572 of 6468
Quote:
Originally Posted by KingT View Post
By further upping vFSB you will not stabilise the core that errors in P95 LARGE FFT as the issue is only GTL voltage related..

READ THIS TEXT THAT I HAVE WROTE IN PRIVATE MESSAGE TO ONE OCN NEMBER:

C2Q CPU's are in fact a two C2 Duos on the same pcb..

So as much as they are mached together to be as similar as they can they are in fact different..

That difference comes into play when you OC a Quad as each of those duals have sweetspots for GTL voltage of their own..

Your board is great in term of GTL's as you can tune GTL voltage for each core separatley..

My board lacks of those advance GTL tunungs as it has GTL voltage same for all 4 cores and only three settings 0.61x,0.63x & 0.65x and that's why I'm limited to 459MHz FSB as I cant tune GTL voltage for the exact core that errors in P95 Large FFT test..

I've posted previously how actuall GTL voltage is being calculated (vFSB x CPU GTL multi eg. 0.67 = actuall GTL voltage)

Intel states that default GTL voltage for 45nm CPU is 1.1V FSBv x 0.67 CPU GTL multi= 0.737V.

When you add vFSB due high FSB OCing you're actually changing real GTL voltage eg. If you use 1.25V FSB and default GTL multi of 0.67 your real GTL voltage is 0.837V and not default 0.737V and that could mess up your CPU's FSB signal and couse errors or a crash..

Like I've said ideal would be keeping actuall CPU GTL voltage @ 0.737V by using GTL multies to compensate for higher FSB/VTT voltage but sometimes CPU's like a bit higher actuall GTL voltage when OC'd @ high FSB in between 0.790V - 0.830V (usually over 450MHz FSB)..

So ti's really matter of finding a right GTL voltage for each core(or pair of cores as some mobos support adjusting it for each pair CPU GTL 0/2 & 1/3 options in BIOS) and it's in reality a metter of trial & error really..

To find which core is a troublemaker use P95 Large FFT test for @ least 6h (I use 12h) and if some of cores errors just up or lower GTL multi for it and test again..

People think that just by upping vFSB/VTT they will stabilize it but in fact they need to adjust GTL's as with additional VTT they could destabilize other cores as well..

Hope I've cleared it out for you..

CHEERS..
Yeah, I have read this in another thread.... Anyway, will not use more time at 460FSB +. Hopeless with this motherboard.

Playing with those 5-6-6-15 timings now. Just ran through 5 runs IBT with Max RAM.
    
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post #1573 of 6468
KingT,

By the way, does your GTX 480 max out at 850MHz stable clocks?
    
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Hard DriveOptical DriveOSMonitor
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post #1574 of 6468
Quote:
Originally Posted by turrican9 View Post
KingT,

By the way, does your GTX 480 max out at 850MHz stable clocks?
I haven't tried any higher but i reckon I could hit around 900MHz as this 850MHz is Furmark 20min stable with 1075mV set in Afterburner (1000mV in Furmark load) and 1050mV in games..

But I will not push it further,don't wanna end up with a blown card though..

CHEERS..
     
CPUMotherboardGraphicsRAM
E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
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E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
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post #1575 of 6468
Quote:
Originally Posted by KingT View Post
I haven't tried any higher but i reckon I could hit around 900MHz as this 850MHz is Furmark 20min stable with 1075mV set in Afterburner (1000mV in Furmark load) and 1050mV in games..

But I will not push it further,don't wanna end up with a blown card though..

CHEERS..
Yeah, take care of your card... Not worth the risk pushing too hard
    
CPUMotherboardGraphicsRAM
Core i7 2600K@4.5GHz Asus P8P67 Pro 3.0 (B3) EVGA GTX 1070 SC Black Edition 4x4GB Corsair Vengeance 1600-9-9-9-24-2t-1.5v 
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Hard DriveOptical DriveOSMonitor
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post #1576 of 6468
Quote:
Originally Posted by turrican9 View Post
Yeah, take care of your card... Not worth the risk pushing too hard
You have seen yesterday what pushing for more combined with stupidity could do= a blown VRM's on the card..

Noth worth the hustle and risk..

Maybe on full cover water block cooling but on air 850MHz is plenthy though..

And for my 19" monitor is overkill even at STOCK..

You should join OCN's HWBot team and score some points..

I have reached 29 points easy in SuperPi,CPU-Z validation and 3DMark Vantage..

Check my HWBot profile by clicking on HWBot bostbit icon..

CHEERS..
     
CPUMotherboardGraphicsRAM
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Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
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Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
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post #1577 of 6468
Quote:
Originally Posted by KingT View Post
You have seen yesterday what pushing for more combined with stupidity could do= a blown VRM's on the card..

Noth worth the hustle and risk..

Maybe on full cover water block cooling but on air 850MHz is plenthy though..

And for my 19" monitor is overkill even at STOCK..

You should join OCN's HWBot team and score some points..

I have reached 29 points easy in SuperPi,CPU-Z validation and 3DMark Vantage..

Check my HWBot profile by clicking on HWBot bostbit icon..

CHEERS..
I will consider joining if you join We Are Gr33n Machine

And you must also, for the rest of your life never buy a AMD/ATI card. Also you must stick to your Socket 775 system for at least 10 years. Those are the rules
    
CPUMotherboardGraphicsRAM
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post #1578 of 6468
Quote:
Originally Posted by turrican9 View Post
I will consider joining if you join We Are Gr33n Machine

And you must also, for the rest of your life never buy a AMD/ATI card. Also you must stick to your Socket 775 system for at least 10 years. Those are the rules
Hahaha I have been on both sides plenthy times though..

CHEERS..
     
CPUMotherboardGraphicsRAM
E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
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Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
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Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
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post #1579 of 6468
Quote:
Originally Posted by KingT View Post
Hahaha I have been on both sides plenthy times though..

CHEERS..
Just kidding

I have also had my share of both sides

Looking very good at 5-6-6-15 here..
    
CPUMotherboardGraphicsRAM
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Hard DriveOptical DriveOSMonitor
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post #1580 of 6468
Quote:
Originally Posted by turrican9 View Post
Just kidding

I have also had my share of both sides

Looking very good at 5-6-6-15 here..
But those crappy ATI drivers are making me become a Nvidia fanboy..

Those timings are looking good for what?

CHEERS..
     
CPUMotherboardGraphicsRAM
E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
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E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
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