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Gigabyte EP45-UD3 Series Owners Guide - Page 445

post #4441 of 21186
Hello again, long time no see. I was just wondering: When do you guys start worry about clock skew on quads? I have a C1 Q9550 and I think it's redicilous how high my Vcore has to be just to get it stable @ 3.65gHz 420FSB/8.5Multi

Currently 1.31250Vcore in BIOS and I think that's a bit high, especially since I use LLC. And occationally I still get error on core #3.

It may be that I'm a bit spoiled since I used to run a E8500 on this board though.
post #4442 of 21186
If temps allow, I'm happy with 1.3625v in Windows if i need it.
And whatever it takes in the bios to get it
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post #4443 of 21186
Quote:
Originally Posted by kimosabi View Post
Hello again, long time no see. I was just wondering: When do you guys start worry about clock skew on quads? I have a C1 Q9550 and I think it's redicilous how high my Vcore has to be just to get it stable @ 3.65gHz 420FSB/8.5Multi

Currently 1.31250Vcore in BIOS and I think that's a bit high, especially since I use LLC. And occationally I still get error on core #3.

It may be that I'm a bit spoiled since I used to run a E8500 on this board though.
Welcome Back, kimosabi. How's the Norse Rad working out?

I haven't had to Skew either the PCU or the MCH yet on any set that I have had stable or just Bootable. I have tried skewing on some higher clocks that I can't get to Boot Windows, to no avail. I am not convinced that skew is necessary on newer hardware. Isn't its purpose to even things out when either the CPU or the MCH are running faster than the other? Also, I haven't figured out if there are channel independent skews for the DIMMs yet. Of course, I may just not know how to use it properly yet too...
Edited by grishkathefool - 7/21/09 at 4:22pm
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post #4444 of 21186
please help me get stable on Prime Blend what i'm i doing wrong? my memory is on stock OCZ Blade 1150mhz and even over volted to 1.88v and MCH up to 1.36 i even tried 1.38 and 1.40 but all fail.

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post #4445 of 21186
Well, your PLL seems high to me, but I don't know squat for q9xxxs. Your vTerm is high for a 479FSB too. You'll need to wait till another q9xxx owner can look at that, but I definitely think you are trying to brute force your way there.

What Prime test are you running?

And in your sig rig, did you seriously pump 2.8v MCH Core???
Edited by grishkathefool - 7/21/09 at 5:57pm
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post #4446 of 21186
That should be way more than enough MCH for that overclock. I'm thinkin' you have not gotten stable in small fft yet. This would mean that your V-core and Term is not set correctly. Lower the MCH to 1.300/1.320 ---Test in small fft(adjusting the V-core and try to keep the term about 0.02v lower than V-core in BIOS. Get stable there and then test prime (adjusting the MCH setting)

edit - Grish -good catch on PLL --too high --LLC? those volt look pretty high

Damn- that's a 479 FSB. I was looking in your sig@459--still better off to get fft 's then blend

sig rig MCH=1.28 not 2.8?
Edited by dennyb - 7/21/09 at 5:44pm
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post #4447 of 21186
Quote:
Originally Posted by dennyb View Post
That should be way more than enough MCH for that overclock. I'm thinkin' you have not gotten stable in small fft yet. This would mean that your V-core and Term is not set correctly. Lower the MCH to 1.300/1.320 ---Test in small fft(adjusting the V-core and try to keep the term about 0.02v lower than V-core in BIOS. Get stable there and then test prime (adjusting the MCH setting)

edit - Grish -good catch on PLL --too high --LLC? those volt look pretty high

Damn- that's a 479 FSB. I was looking in your sig@459--still better off to get fft 's then blend

sig rig MCH=1.28 not 2.8?
well the thing is that it does pass 10 runs in Linx but it doesnt pass prime blend and yeah i been testing on a 479 FSB that's why i been raising my MCH to get stable in linx but i failed prime blend in minutes.
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post #4448 of 21186
He might have more luck trying to run a 450x9 or something similar.
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post #4449 of 21186
Quote:
Originally Posted by grishkathefool View Post
He might have more luck trying to run a 450x9 or something similar.
my quad only goes up to 8.5x only but my FSB right now is 479 so i can i get my ram to stock
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post #4450 of 21186
Quote:
Originally Posted by grishkathefool View Post
Well, your PLL seems high to me, but I don't know squat for q9xxxs. Your vTerm is high for a 479FSB too. You'll need to wait till another q9xxx owner can look at that, but I definitely think you are trying to brute force your way there.

What Prime test are you running?

And in your sig rig, did you seriously pump 2.8v MCH Core???
i use prime blend and failed it but i pass 10 runs of linx weird
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