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  #141 (permalink)  
Old 21st January, 2003, 04:32 AM
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Priming at 2.1v
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Why cant i use a higher vcore than 1.9?!-prime.jpg  
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  #142 (permalink)  
Old 21st January, 2003, 04:48 AM
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what prime test is that? do the torture test
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  #143 (permalink)  
Old 21st January, 2003, 04:51 AM
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Yes, yes torture me!!!! Prime95

The stress test, the system DEstabilizer.

I would say this is a success since I'm Priming for almost an hour now. I don't want to jump the gun here but the results speak for themself.
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  #144 (permalink)  
Old 21st January, 2003, 05:01 AM
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sorry dude... heat isnt the problem man... i just put a sink on mine and still couldnt do 2.2v...

heat couldnt ever be the problem since there is no way heat is generated that quickly to make the system turn off the instant a program is run that puts the cpu to 100%. no way

now u just may have given your board the kick in the ass it needed to work correctly.. my board on the other case has no hope and is going back!
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  #145 (permalink)  
Old 21st January, 2003, 05:04 AM
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I only tried 2.1v so far but before I couldn't run Prime at all at even 1.925v I really only wanted 2.1v but I hope I can do 2.2v if I need to. I'll try it tomorrow.


Did you use thermal adhesive of some kind? Did you let it dry?
Are you sure it made good contact?

I'm also using that new 3117 bios.
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  #146 (permalink)  
Old 21st January, 2003, 05:09 AM
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arctic alumina is what i used... it cant be heat man... or else it wouldnt even boot up at 2.2v
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  #147 (permalink)  
Old 21st January, 2003, 05:19 AM
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What else than heat? We all had the same problem, I installed a few fans and so did Bondo. Both can prime stable at 2.0V+. I really can't come up with something else. I never did the mod, dont know about Bondo. My case temp is at about 22 C now (windows open).
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  #148 (permalink)  
Old 21st January, 2003, 05:22 AM
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I have the VDD mod done but this happened way before that.
It happened with the VDD at 1.60v

I hope this fix works for others.
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  #149 (permalink)  
Old 21st January, 2003, 06:07 AM
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Quote:
Originally posted by DisposableHero
sorry dude... heat isnt the problem man... i just put a sink on mine and still couldnt do 2.2v...

heat couldnt ever be the problem since there is no way heat is generated that quickly to make the system turn off the instant a program is run that puts the cpu to 100%. no way

now u just may have given your board the kick in the ass it needed to work correctly.. my board on the other case has no hope and is going back!
DH,

Sorry nothing worked for you. I agree that there's a lot more to this than just heat control. Heat was not causing my shutdowns either. I've made no cooling changes at all, only the mod and now no shutdowns. Why would heat be a huge factor at the low voltages (1.85v) we were talking about anyway?

Bondo,

Nice going on your fix dude! :beer:

I would certainly recommend to anybody having any kind of Vcore power problems to try cooling solutions first before cutting traces. I'm not sure it was quite accurate to say that this was ONLY a heat problem though. Clearly there are at least two cases so far that heat was not the major cause of the shutdowns at 1.9v. Some of these boards have issues that go beyond a simple heat problem.

Anyway, congrats on your crankin' rig and thanks for your contributions. I'm following your lead on cooling. I just ordered some Arctic Alumina adhesive and I'm adding heatsinks to my VR and SB. I doubt it will fix the 2.1v POST problem, but it may just get me a little more FSB.

Best of luck all!
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  #150 (permalink)  
Old 21st January, 2003, 07:54 AM
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I found an added benefit for this fix even if you don't use high Vcore's.

The CPU now runs using less Vcore then before more stable. My 2400+ is at 2400mhz right now and 1.85v. I know the CPU can do 2500 so I'll take it up slowly.

This mod stops the vcore fluctuations.
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  #151 (permalink)  
Old 21st January, 2003, 08:20 AM
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Quote:
Originally posted by Bondo
I found an added benefit for this fix even if you don't use high Vcore's.

The CPU now runs using less Vcore then before more stable. My 2400+ is at 2400mhz right now and 1.85v. I know the CPU can do 2500 so I'll take it up slowly.

This mod stops the vcore fluctuations.
what mod?
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  #152 (permalink)  
Old 21st January, 2003, 08:47 AM
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I meant the heatsink on the VRM.

It is a mod though. You're modifying the board.
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  #153 (permalink)  
Old 21st January, 2003, 08:59 AM
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Quote:
Originally posted by Bondo
I found an added benefit for this fix even if you don't use high Vcore's.

The CPU now runs using less Vcore then before more stable. My 2400+ is at 2400mhz right now and 1.85v. I know the CPU can do 2500 so I'll take it up slowly.

This mod stops the vcore fluctuations.

Pilsy wrote up a pretty good article on this exact subject a couple of days ago. Pretty good info:

http://www.xtremesystems.org/forums/...&threadid=8314
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  #154 (permalink)  
Old 21st January, 2003, 09:07 AM
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Yes good info. Pilsy is a good guy

Great minds think a like. What can I say?
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  #155 (permalink)  
Old 21st January, 2003, 09:08 AM
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yeah just saw that photon.. really good writeup
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  #156 (permalink)  
Old 21st January, 2003, 01:17 PM
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Very nice thread guys, i had exactly the same problems with my first 8RDA+ Rev 1.1 .
Now i have a new one and the mosfets changed, but it is still rev 1.1 - i have no Vcore problems anymore.

cyas
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  #157 (permalink)  
Old 21st January, 2003, 04:57 PM
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So La Freak,

you can run 2.2v with highly overclocked CPU and run Prime with no shutdowns or BSOD??

How high is your CPU OC'ed?
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  #158 (permalink)  
Old 21st January, 2003, 05:27 PM
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Quote:
Originally posted by Merenfreak
Very nice thread guys, i had exactly the same problems with my first 8RDA+ Rev 1.1 .
Now i have a new one and the mosfets changed, but it is still rev 1.1 - i have no Vcore problems anymore.

cyas

Thanks Merenfreak, good to know.

I noticed they changed from a rev 1.0 board vs. the rev 1.1 board I have now. It would be interesting if they were changed yet again.

If you have a digicam, can you post a pic of the MOSFETs?

EDIT: Or post back with a part number from them too if you can. Thanks!
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  #159 (permalink)  
Old 22nd January, 2003, 09:40 AM
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Two things:
1. I'm glad you found a solution you can live with.
2. If you haven't read the announcement at the start of the EPoX thread you had better. The next time I see this manner of posting in the EPoX topic you will be ban.
If you lack the manners to ask questions and explore an issue without the negative commentary and BS this is not the forums for you.

I'm not speaking to everyone here, but to more than one or two.
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  #160 (permalink)  
Old 22nd January, 2003, 01:18 PM
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i have the exact same problem as you bondo... when did you get your board and where did you get it from? also, what kind of heatsinks did you use and such?
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