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1100T on MSI 770-C45

post #1 of 10
Thread Starter 
So, I'm guessing a lot of you saw the title and thought "oh christ". I recently upgraded from dual core to a Phenom II X6 1100T (it's only seen a few days of use so far) but I haven't overclocked it since I know the VRMs are bad, but I'd like to do so. How strongly would you guys recommend I upgrade? The 770-C45 is one of the later black ones that I bought two years ago (I think the VRMs on the newer black ones are different from on the older red ones, not sure which are better though), but I couldn't see any examples of that exact motherboard in this thread.

Anyway, it seems quite clear to me that I need to change something before my PC catches fire. I was thinking of buying a Sabertooth 990FX, but I'd prefer to pay less, so I'd appreciate suggestions on a good bang for buck AM3/AM3+ motherboard. Or, do you think I'd be safe by just putting some heatsinks on the VRMs on my existing motherboard?
lolpc
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lolpc
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post #2 of 10
How do you know the VRM's are heating up? As long as your not overclocking there shouldn't really be a problem...
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i7 3820
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post #3 of 10
Thread Starter 
Well to be honest, I had just sort of assumed they were. I have a friend who used the same mobo and his caught fire with just a dualcore, though I have a better CPU cooler/better airflow in general.This mobo only cost me £50 and I've seen people have issues with more expensive boards by the same manufacturer, so I figured I'd be at risk. And I would like to overclock, just that I figured it would be best not to risk it with the 770-C45!
lolpc
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AMD Phenom II X6 1100T MSI 770-C45 Gainward GTX 260 Corsair 2x2GB Dominator 1.8V 
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Titan Fenrir Windows 7 64-bit Cooler Master Real Power M620 (620W) 
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lolpc
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post #4 of 10
You should be fine. MSI had problems with the DRMOS chips in the high end board. My 890fx just stopped working after a year straight of 4.0GHz.
Just don't do any overclocking and you should be fine.
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Black Lightning
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post #5 of 10
Thread Starter 
Alright, thanks for the replies. I think I'll wait on upgrading the motherboard, I'll keep an eye on the temps and see what happens. I'd like to overclock this chip though, so I might end up upgrading anyway.
lolpc
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lolpc
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post #6 of 10

Just fine?  Hardly.  You guys are taking him down the wrong direction.  The DrMOS boards (890FXA-GD70 and 790FX-GD70) actually had a lower fail rate and somewhat higher tolerance than the boards using standard transistor designs.

 

MSI's 770 and 870 boards share a VRM design that has a ridiculously high failure rate.  Check out the failure rates on the 870A-G54 and 870-G45 (which fundamentally has the same VRM structure as this board; the 870A-G54 may have different capacitors but uses the same MOSFETs, those are what fail).  Failures at stock speed Phenom II x6 several times.  Often on the stock cooler, too - which means the VRMs are actually getting cooling, and are failing anyway.Often catastrophic failures too.  i.e. the violent kind, the kind that causes components to burst into flames and cause damage to other components.

 

Failures on dual cores (can you tell me more about your friend's failure incident so I can record it down in the thread?) aren't uncommon either.  It happened to PunkX1 with an 870-G45 trying to run a Phenom II x2 processor at barely higher than stock.  That consumes significantly less power than this x6.

 

I extremely strongly highly recommend you swap your motherboard out right away.  The problem is the design of the transistors (the third transistor is incorrectly sized and responsible for the failure in a majority of the situations), the low overall supply/conversion capacity of the MOSFET chips, and per-chip quality (low standards mean bad chips may pass).  This board is not fit for running quad/hexa core 125W processors at stock.

 

The record in my thread, which you've seen, pretty much proves it.

 

A change in board colours doesn't necessarily mean any change in components choice, by the way.  It's just that - a change in colour.  Only a major new revision might involve components change i.e. VRMs.


Edited by xd_1771 - 1/31/12 at 7:30pm
post #7 of 10
the Sabertooth is your best bang for your buck with a 5 year warrenty
post #8 of 10
the gigabyte 990 ud3 looks good. i also personally recommend the asrock 990fx extreme 3
 
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post #9 of 10
Thread Starter 
Thanks for the replies guys =) After a BF3 session the mosfets don't actually seem too warm, I can at least put my finger close to them for an extended period of time. My titan fenrir/exhaust fan seems to pute a fair bit of air across them, but I'll keep an eye on them. After all, I WOULD like a Sabertooth... biggrin.gif
Quote:
Originally Posted by xd_1771 View Post

can you tell me more about your friend's failure incident so I can record it down in the thread?

He had a Phenom II X2 550 at 3.7GHz, but he says he thinks he left his voltages at auto (but with my 550 it needed more like 1.45V to stay stable at that level). He had an Arctic Pro freezer 7.


EDIT: Also, would I be alright (relatively speaking) if I overclocked the CPU just as long as I didn't overvolt it?
Edited by Splits - 2/3/12 at 4:54pm
lolpc
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lolpc
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post #10 of 10

Overclocking the CPU without an overvolt still increases power consumption (not as much but it does) beyond ideal safe levels (heck at stock they are already beyond the safe levels for this motherboard)......... with an undervolt it might balance things but ideally what you want to be doing right now is focusing on reducing the power consumption as much as possible and looking to a new board for safe full functionality.  That may mean disabling a few cores (which you may or may not need anyway).

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