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my 890fx-gd70 got cooked - Page 3

post #21 of 60
2.5 pll is normal for the amd board.
Sandy Bridge E
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Sandy Bridge E
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post #22 of 60
Thread Starter 
Quote:
Unfortunately MSI does not provide global warranty for these products. For service please contact your place of purchase or MSI branch of the country through which your product has been sold.

Regards,
MSI UK Service
uksupport.msi.com
ok, so i'll have to contact the local msi branch for service........but wait......

guess what? there is no such thing called msi ireland!!!

thank you very much for the very last of your boards i own.
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post #23 of 60
My 790fx blew up first thing when i got a 1090t. Have a gigabyte ud7 and havent looked back. its northbridge gets hot as well but i'm 9 hours prime 95 stable so far.
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post #24 of 60
I have always had very good luck with MSI boards and prefer them actually.

Through experience though, I always redo the TIM on the northbridge of all boards I purchase. I also like to place a sunion 40mm fan on them as well.

It seems like the board manufacturers slack when it comes to this area. Just look at the Asus Crosshair IV? You have to cut screws and reapply TIM in them!
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post #25 of 60
My MSI 890FX got cooked too. 1090T on 4.0GHz and 1.4V jump did mine.... And how long to do you have to wait for message saying they have your RMA request form because its Wednesday and I filled one out on Saturday of last week and then yesterday I request a Technical Support form and still haven't got any emails or phone calls .
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post #26 of 60
I've seen this happen far too often on MSI boards. That's the primary reason I don't buy them anymore. I had one K9A2 Platinum blow up under modest load and another have the CPU PWM heatsink retention mechanism just fall apart, allowing its spring to short my PSU. It died though the board lives on. MSI is just cheaply made junk, imo.
post #27 of 60
Thread Starter 
seems to be a lot failed boards from msi now days. it's funny how they advertising:



man, what kind of "military class" are you talking about? suicide bombers?
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post #28 of 60
Ahahha yea suicide bomber..
Red Death
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Red Death
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post #29 of 60
Saw this and decided to register, just to make a comment about the 790 and 890 FX boards. I had the same issue happen with the EPS connector shorting out, about a day after dropping in a 1090T (previously had a C2 965BE). It sent a surge to the chip for a few seconds, and temps spiked at 65, then everything shut down (PSU went into protect).
I didn't RMA the board because I had already RMA'd it once, and didn't want to spend another $30 for something that might break a third time.
The issue with these boards is not the advertised 4+1 phasing; that is a myth. Each DR MOS is itself a dual phase chip with a controller built in as well. The design itself is fine, and the engineering is sound. Why do they blow? Simply because the heatsink is not making contact with them. They do run hotter than conventional MOSFET arrays because they are passing more wattage and overall have less surface area.

When I took the heatsink off my 790FX-GD70 I notice that one of the MOS chips (2nd closets to chipset) had never made contact with the heatsink, overheated, and actually put a bubble on the back of the board. The problem is in the heatsink design as it's not only using the thick rubber-like strip to mate chip to heatsink, but the heatsink is actually sitting cocked on the northbridge chip, as well as the MOS chips. The rubber-like strip can only do so much, and there really isn't a lot of downforce on the whole thing.

I suspect MSI knows about the issue because the first time I sent my board back (due to a locked BIOS that refused to reset after a week of no power/battery/with reset jumper shorted), they returned the same board, but the heatsink had obviously been removed to check for damage, so I'm guessing it's routine. Granted, the board ran like a champ, but voltage did fluctuate a tad.

The UD5 890FX board I bought has zero fluctuation, running 1.296 (instead of 1.300) volts at any given load with all 6 cores running 3.6 Ghz. It's not a big overclock (some wouldn't even call it that) but will suffice for now. I like MSI boards in general, and have used them in the past (along with other products) with no errors. This board, however, is flawed, and MSI's RMA process stinks (agreeing to pay shipping to them for something they obviously know is flawed). Granted, the Gigabyte isn't without its issues (F1 bios was flakey) but those are being addressed. My only gripe with that is seeing the NB and VRM section running in the 40C area...too hot for my tastes (My processor hits 41C after a few hours of Prime with 6 threads running...go Noctua).

Hopefully this will help people, and get the word out about these boards.
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post #30 of 60
This motherboard says it supports 6-core, but cannot handle significant overclocks with it. The mosfet simply cannot handle the amount of power the CPU needs.

I tested this theory by overclocking the 1055t to 4.2 GHz. Everything ran okay, Prime95 ran just fine. When I went to Linx, or Intel Burn Test, the capacitors around the mosfet started to whine. About 20-30 seconds later, the motherboard went into protection mode due to overheat and shut everything off. The CPU temps never went over 53c. The NB never went over 40c.

Taking this same test, I turned 2 of the 1055t's cores off. Linx and IBT ran smoothly and there was no whining coming from the mosfet capacitors.

Conclusion:

This board was never meant to handle 6-core CPUs. Get your money back if you can, because any "stable" overclock with the 1090 or the 1055 just means the inevitable is delayed.

I have not tried aftermarket mosfet cooling, but I am stongly considering it. I did not want to buy a new mobo, but will if I have to.
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