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[Official] Gigabyte GA-990XA/970A-Series Owners' Club & Help Thread - FX-8350 support added - Page 79

post #781 of 3278
Thread Starter 

^ That's not always true, a quality 4+1 phase VRM might be able to handle quite a push, just with somewhat hotter running and less efficiency.  I.e. Biostar TA890FXE/GA990FXE

post #782 of 3278
guys does GA-970A-UD3 support core unlock? i realy like the features of this MB just the right stuff for me, so if it has core unlock am gonna buy this and Phenom II X2 555 B.E. if not gonna buy Athlon II X4 640.
post #783 of 3278
Quote:
Originally Posted by musty989 View Post

Hey guys, I have a question that I hope somebody here can help me with. I have had the 970a-ud3 for 4-5 months now running an Athlon II x4 630 with a corsair H100 cooling kit. I've read through this entire thread and decided to follow one of the members who took off the thermal pads from his MOSFET's and Northbridge heatsink's and applied some thermal paste to lower the temps.
I went ahead with this using some MX-4 and ended up with negative results with both my NB and Mosfet temps(TMPIN1 & TMPIN2) rising +2-5 C degrees while under load from Prime95 & Intel Burn-in test. My ambient room temperature didn't change nor did my CPU temp change either. Before I did this, under load my TMPIN1 was maxing out at 42C and my TMPIN2 at 49C, and afterward TMPIN1 = 46C TMPIN2 = 53C.
So my question after researching is, when I removed the mosfet and NB thermal pads and applied MX-4 in there place, did I apply too much MX-4 (i just dabbed some in the center of NB and spread and I covered all of the mosfets with a q-tip cut in half which covered all of the chips but left extra and uneven TIM on top which I thought wouldn't have been overkill considering it had a thermal pad to begin with). Or my other thought was that the thermal pads were thicker and provided a tighter fit between the mosfet chips and heatsink, so when I took them off it left them with more space between the two which reduced the ability for the heatsink to properly transfer heat. Anyway, hope somebody who has done the same thing can help me out. I was under the impression that the MX-4 would have lowered the temps at least a little bit, so should I reapply TIM and use a credit card to properly even out the TIM or does my thought on the gap created from removing the thermal pads hold any merit?
Btw, My x4 630 is clocked at 3738MHz @ 1.52V, CPU NB CID +.100V, NB 2670MHz. My FSB's top stable setting seems to be 267, after that I start to hit a wall regardless of my settings, is this a good range for this board?

You should never remove the thermal pad for the mosfets as I dont think using an actual TIM works for mosfet cooling. It is always typically thermal pads on mosfet coolers whether stock or aftermarket. However, you can use TIM on the NB and it should end up cooling it better than a thermal pad. I used TIM on my previous board (GA-MA790XT-UD4P) and saw much better temps on the NB. Though since the contact area with the heatsink and NB is much smaller than that of a CPU cooler and CPU, I used a very.... very small amount of TIM. When applying it to the NB, use less than the "grain of rice" size that is recommended for CPUs. Do not spread it over the surface area of the NB either.

However, you did mention a noticeable gap since removing the thermal pad so that might be the cause of the issue (at least on the mosfets). In all honesty, you might want to look into an aftermarket solution such as the HR-09 and HR-05 heatsinks from Thermalright.
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post #784 of 3278
owh man.. i just found out that GA-970A-UD3 has ACC (Advanced Clock Calibration) disabeld so am gonna go whit Athlon II X4 640... not happy
post #785 of 3278
Quote:
Originally Posted by darklink View Post

You should never remove the thermal pad for the mosfets as I dont think using an actual TIM works for mosfet cooling. It is always typically thermal pads on mosfet coolers whether stock or aftermarket. However, you can use TIM on the NB and it should end up cooling it better than a thermal pad. I used TIM on my previous board (GA-MA790XT-UD4P) and saw much better temps on the NB. Though since the contact area with the heatsink and NB is much smaller than that of a CPU cooler and CPU, I used a very.... very small amount of TIM. When applying it to the NB, use less than the "grain of rice" size that is recommended for CPUs. Do not spread it over the surface area of the NB either.
However, you did mention a noticeable gap since removing the thermal pad so that might be the cause of the issue (at least on the mosfets). In all honesty, you might want to look into an aftermarket solution such as the HR-09 and HR-05 heatsinks from Thermalright.

Hey Darklink,

Thank you for the reply, I did take a look at the HR-09 ad HR-05 heatsinks but I'm not sure if they'll fit my board and if so which ones since they aren't listed in any of the heatsinks motherboard compatibility list. Even though my temps did increase, are temperatures of TMPIN1 = 46C and TMPIN2 = 53C high enough for me to worry about? I do plan on upgrading to a Piledriver processor in the future and I'm sure after overclocking that those temps will increase as well. What are high temps for TMPIN 1 & 2, and what temps are considered a good range? I'm just now starting to learn about the importance of good mosfet cooling when you're overclocking, but if the temps I'm hitting now aren't high enough to be of concern then I'd rather just leave them be and worry about it after I upgrade my processor.
post #786 of 3278
970A-UD3 have Cpu Unlock function
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post #787 of 3278
Zvone bro, are you 100% sure about that? Realy want to try unlock the 555BE to > B55 it has the best % for unlocking the 2 locked cores among the Phenom family and they dont make core unlock for nothing...
post #788 of 3278
yes
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post #789 of 3278
great! tnx a lot bro! ziv bio!
post #790 of 3278
No problem,xD, javio sam ti se u PP
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Overclock.net › Forums › AMD › AMD Motherboards › [Official] Gigabyte GA-990XA/970A-Series Owners' Club & Help Thread - FX-8350 support added