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54% Overclock scaling on a $410 build - Page 2

post #11 of 22
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Quote:
Originally Posted by xd_1771 View Post
Ah, just what I was worried about... none of the ASRock 785G boards have power phases fit to run a 125W processor, especially overclocked and running extra voltage. They're all 4+1 power phase, and they look to be of startlingly low quality. If your mosfets don't blow right away, chances are they'll degrade over time and either blow later and provide a power output to the CPU so unstable that it'll take your overclock with it and you'll have to down those clocks back to stock (speaking of which, to prevent any major disasters you really should do that now!)

If you don't have any money to swap that board, the best thing you could do is buy a ~$10 pack of mosfet heatsinks to keep within the safe zone on that board. Also, do not ever pass 1.475V. Ever.

1333 CL7 is about equal to 1600 CL9 anyway so not much to worry about. May be the C2 revision proecssor holding you back.
Agree with everything you said, although I think you overreact some about 4+1 phase limitation. I also had a Phenom II 955 oc'd to 4.1GHZ on a Gigabyte 785G US2H board. Same 4+1 phases. No problem. No heat to the touch during a stress test. Although above 1.5v and 4GHZ my "Japanese solid" capacitors would squeal. The extra phases are not as much of a safety feature as they are an aid for overclocking, as their purpose is to suppress ripple current. 8+2 is a little cleaner power, but it's also more solid state components with the possibility to fail. If my 4.1 phases end up allowing a ripple high enough to nuke my chip or motherboard (extremely unlikely if you monitor temps and voltages), I'm ok with that, as this mobo and cpu are back from the dead already. My insurance adjuster wrote off the whole computer for like $800. Just waiting to find a heck of a deal on a crossfire board, or I can wait until AM3r2. Until then, I'm pushing this bag of bones to the limit.
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post #12 of 22
I could post my collected horror stories and prove my reason but I guess you have proved me wrong some here. I do recommend you invest in a better power phase though, as it's not just MSI brands that like to fail, I've seen some examples of ASUS and Gigabyte 4+1 failing now. I guess you were just lucky with the 785GM-US2H.

My usual consideration is that a (heatsinked) 4+1 phase on a quality board is safe for taking a 125W processor on a moderate joyride, i.e. up to 1.475V.
Edited by xd_1771 - 1/30/11 at 4:46pm
post #13 of 22
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post
I could post my collected horror stories and prove my reason but I guess you have proved me wrong some here. I do recommend you invest in a better power phase though, as it's not just MSI brands that like to fail, I've seen some examples of ASUS and Gigabyte 4+1 failing now. I guess you were just lucky with the 785GM-US2H.

My usual consideration is that a (heatsinked) 4+1 phase on a quality board is safe for taking a 125W processor on a moderate joyride, i.e. up to 1.475V.
You would probably enjoy reading this. It's a good explanation of "how it works" on the component level of motherboard voltage regulation. There is quite a bit more to it than just 4+1, 8+2, ect. You like MSI boards, but did you know that they often use IC's instead of single mosfets? That means they are replacing an entire solid state component with a whole integrated circuit, amazing! I guess they aren't kidding when they say "military grade" components. Reminds me of how extra redundancy was a way of life while I was in the Navy

Bottom line is this: More phases is better, but you get logarithmically diminishing returns for each phase you add. But if you got the money to spend, by all means, buy all the phases

The only way to truly know is to buy an o-scope and start tracing the voltage regulation from the rectifiers in the power supply, and following through the motherboard, and compare the various wave forms that get outputted to the CPU. You would have to zoom into the microvolt scale to see noise on high end systems. My rig, probably not so much
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post #14 of 22
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xd_1771: I just happened to be bored today, and I looked in my box of random computer junk and saw a small northbridge heatsink from some old nforce motherboard. I studied it for a minute, then remembering your haunting words I began to saw it into tiny blocks. Took me 30 minutes to chop up and smooth out the aluminum, then I mounted them on all of the VRM chips. I had leftovers, so no piece of silicon larger than 5 square millimeters was left uncovered. Then I covered all of the memory chips on my VGA card (already had VRM sink). Then I mounted 80mm fans to blow over my northbridge and new VRM sinks. It looks like an abortion, but it does give me 50% more piece of mind. (It's also fun tearing my system apart and MacGyvering junk into something useful).
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post #15 of 22
That's a great article, very informative. And I don't believe what you did with the NB heatsink until I see some pictures of it. Sounds quite amazing actually
post #16 of 22
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Originally Posted by xd_1771 View Post
That's a great article, very informative. And I don't believe what you did with the NB heatsink until I see some pictures of it. Sounds quite amazing actually
I knew you'd say that, so I did snap 1 pic with my phone before I buttoned her up

The middle silver ones are ones I chopped up because they had to be pretty narrow. The black ones are some random sinks I had laying around.




Another cool pic that was next on my phone:



These are some of the cranes I work on at the steel mill.
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post #17 of 22
Holy crap that is messy in an absolutely awesome way. Too bad the CPU heatsink blocks most of it
Wait a minute is that OCZ Gold RAM!? If you got that for $50 it's absolute garbage Sorry to say this but that is definitely the worst DDR3 out there in both stock ratings, reliability/failure rate, overclockability. Unless my eyes are tricking me and that is not OCZ Gold I'm seeing (it's a bit fuzzy but making out the top of it, it seems like OCZ gold at first stance...)
post #18 of 22
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Originally Posted by xd_1771 View Post
Holy crap that is messy in an absolutely awesome way. Too bad the CPU heatsink blocks most of it
Wait a minute is that OCZ Gold RAM!? If you got that for $50 it's absolute garbage Sorry to say this but that is definitely the worst DDR3 out there in both stock ratings, reliability/failure rate, overclockability. Unless my eyes are tricking me and that is not OCZ Gold I'm seeing (it's a bit fuzzy but making out the top of it, it seems like OCZ gold at first stance...)
Nope worse. OCZ Obsidians, and I have already had to RMA them once
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post #19 of 22
Sometimes, you just have to put your trust in the Board
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post #20 of 22
Quote:
Originally Posted by [Adz] View Post
I've got the same RAM with the same problem. I'm pretty sure it's because it only likes the i3, i5 and i7 chips.
Same here as well
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