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Is this a golden chip? (Q9550) - Page 7

post #61 of 77
Thread Starter 
Quote:
Originally Posted by turrican9 View Post
Your PLL should not need being that high.. Most common for 45nm overclocking is 1.52 to 1.56v range.. Be careful with that. Can damage your Clock generator..
Thanks for that tip, I think when I was getting to 3.7 I tweaked it to see if it would help an issue (which was actually the RAM) and then never got around to setting it back.
post #62 of 77
Look at the chip. If it doesn't have a yellow tint to it, it is not a golden chip..

/Thread.
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post #63 of 77
Voltage * ampère = roughly power consumption, so maybe higher ampère generates more heat in comparision to higher voltage with lower ampere...
post #64 of 77
Thread Starter 
471MHz FSB 2hrs Prime stable with a VTT of 1.50V.

"But it's not 6hrs!!!!!"

Yeah, but I'm not going to spend three weeks overclocking.

Increasing multi and aiming for 4GHz.
post #65 of 77
Quote:
Originally Posted by Phaedrus2129 View Post
471MHz FSB 2hrs Prime stable with a VTT of 1.50V.

"But it's not 6hrs!!!!!"

Yeah, but I'm not going to spend three weeks overclocking.

Increasing multi and aiming for 4GHz.
Yeah, look at that... you're already up to 1.5v VTT.. I doubt that will last 6 hours.. You will need closer to 1.6v VTT for that.

Safe limits are 1.4v VTT for 45nm Quad.. I've been all the way up to 1.9v VTT when Validating FSB. Have stability tested at past 1.6v VTT...

A board, with proper GTL settings will maintain stability at those FSB speeds at a much lower VTT...
    
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post #66 of 77
Quote:
Originally Posted by Phaedrus2129 View Post
471MHz FSB 2hrs Prime stable with a VTT of 1.50V.

"But it's not 6hrs!!!!!"

Yeah, but I'm not going to spend three weeks overclocking.

Increasing multi and aiming for 4GHz.
Thats fine TBH, I haven't ran 6+ hours of prime in a long time. I've not used Prime to stress in a while, to check long term stability I just use the computer as its intended to be used (gaming and video encoding in my case)

Edit : Good luck with 4GHz, let us know how you get on !
Edited by Deano12345 - 4/24/11 at 2:37pm
    
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post #67 of 77
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Quote:
Originally Posted by turrican9 View Post
Yeah, look at that... you're already up to 1.5v VTT.. I doubt that will last 6 hours.. You will need closer to 1.6v VTT for that.

Safe limits are 1.4v VTT for 45nm Quad.. I've been all the way up to 1.9v VTT when Validating FSB. Have stability tested at past 1.6v VTT...

A board, with proper GTL settings will maintain stability at those FSB speeds at a much lower VTT...
Asus and Gigabyte actually changed their specs on that, and now claim up to 1.9V is safe. I'll try to keep under 1.6V to be safe.
post #68 of 77
Quote:
Originally Posted by Phaedrus2129 View Post
Asus and Gigabyte actually changed their specs on that, and now claim up to 1.9V is safe. I'll try to keep under 1.6V to be safe.
Link please?
    
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post #69 of 77
There's no difference in performance experience between 3.9GHz (459MHz FSB) and 4GHz (471MHz FSB) but the jump in vFSB/VTT is huge..

On P5Q Pro due such poor CPU GTL settings available in BIOS for 459MHz FSB a Q9550 usually needs ~ 1.30V vFSB but for 471MHz FSB it needs over 1.5V vFSB..

To me not worth the hustle and risk..

CHEERS..
     
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post #70 of 77
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Quote:
Originally Posted by KingT View Post
There's no difference in performance experience between 3.9GHz (459MHz FSB) and 4GHz (471MHz FSB) but the jump in vFSB/VTT is huge..

On P5Q Pro due such poor CPU GTL settings available in BIOS for 459MHz FSB a Q9550 usually needs ~ 1.30V vFSB but for 471MHz FSB it needs over 1.5V vFSB..

To me not worth the hustle and risk..

CHEERS..
Going there for the epeen, then backing off.

Linpack stable at 4GHz
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