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post #3741 of 12377
Need some help plz!

In my research over which value board to buy for overclocking an 8320, I stumped into a couple questions, so if anyone can help me out id appreciate some answers!

1 - i was leaning on a rev 1.2 or 3.0 UD3 but I saw a few people saying that its VRM heatsink was insufficient for a heavily OCed 8xxx cpu and it might catch on fire O.o?
2 - does the UD5 have newer/better VRMs/power management than the UD3?
3 - does the UD5 have LLC? if so, which revisions? Giga's website only shows 1.x unlike the UD3 which shows 1.0, 1.1, 1.2 and 3.0..

basically, will I be safe trying to OC a 8320 upto 4.8 ~ 5.0Ghz with a UD3 or must i cough up the extra cash and get a UD5 or a sabertooth? =\ UD7 is definitely out of my budget
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post #3742 of 12377
no the vrm's on the ud3 boards are really cool. it is comparable to the cpu temp, and your vrm's may go higher.

al the boards since rev 1.1 have llc on board. only the rev 1.0 doesn't (on the ud3).
and as far as i've seen here, the rev 1.1 and 1.2 of the ud3 board does the best overclocking.
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post #3743 of 12377
Quote:
Originally Posted by Fordox View Post

no the vrm's on the ud3 boards are really cool. it is comparable to the cpu temp, and your vrm's may go higher.
al the boards since rev 1.1 have llc on board. only the rev 1.0 doesn't (on the ud3).
and as far as i've seen here, the rev 1.1 and 1.2 of the ud3 board does the best overclocking.

even when pushing 1.5v+ for an FX 8320 @ 4.8+Ghz?
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post #3744 of 12377
yes the vrm's will hold and stay relativly cool.
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post #3745 of 12377
pffff I cant seem to get even 4,5 ghz stable under prime, it gives hardware failure errors with 200x22.5 with a set voltage of 1,48 volts. I have seen voltage drops to 1,408 in cpu-z. its really bad with working without LLC and under water...

I'm going to try to set 1,51V in the bios next week and see how far i can get from there.
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post #3746 of 12377
I was wondering is it even possible to get a UEFI on a 990fxa-UD3 version that is less than 3.0 or is the flash storage not large enough to hold a UEFI?

PS I feel that the 990fxa boards would overclock much better if they allowed you to adjust the CPU voltage in smaller increments than 50mv steps.
post #3747 of 12377
nope, the whole bios chip itself must be replaced with an UEFI one. bios does not exist on such a board and won't run UEFI if it did...
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post #3748 of 12377
Cant say it for 1.1 and higher UD3 but my VRM on my 1.0 were getting up to 80C with active cooling.
When I had the 8120 in it was shutting its self down and took my awhile to figure out why, VRMs were going over 100C and turning the PC off.

With the 8350 they were a little cooler getting up to 75C with active cooling since the 83XX uses less current.
There is no onboard temp sensor so I was using a infared gun. But with water cooling the socket temp is close to the VRM temp.
Socket temp was 4C cooler and core temp was 10C cooler then socket temp.
post #3749 of 12377
Quote:
Originally Posted by omninmo View Post

Need some help plz!
In my research over which value board to buy for overclocking an 8320, I stumped into a couple questions, so if anyone can help me out id appreciate some answers!
1 - i was leaning on a rev 1.2 or 3.0 UD3 but I saw a few people saying that its VRM heatsink was insufficient for a heavily OCed 8xxx cpu and it might catch on fire O.o?
2 - does the UD5 have newer/better VRMs/power management than the UD3?
3 - does the UD5 have LLC? if so, which revisions? Giga's website only shows 1.x unlike the UD3 which shows 1.0, 1.1, 1.2 and 3.0..
basically, will I be safe trying to OC a 8320 upto 4.8 ~ 5.0Ghz with a UD3 or must i cough up the extra cash and get a UD5 or a sabertooth? =\ UD7 is definitely out of my budget
Quote:
Originally Posted by omninmo View Post

even when pushing 1.5v+ for an FX 8320 @ 4.8+Ghz?

Not possible. Here's a VERY good explination:

http://www.overclock.net/t/1301999/gigabyte-990fxa-bios-flash-to-vrm-mos-protection-issue/0_60#post_18084613

The second post, summarized, says that for my specific overclock of 1 G at the time used only ~50% of the max cap output, making overheating rather impossible for stock heatsinks.
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post #3750 of 12377
Is anyone having much luck with a revision 1.0 UD3 using Vishera? Vcore adjustments don't seem to work for me on F9e or F9 final. I can boot into Windows and run passes of Cinebench repeatedly at 4.6 GHz using stock voltage (1.35). I then tried 4.7 and it quickly died. I then tried 1.375, 1.40, 1.425, 1.45, and finally 1.475 and none of them made the system behave any differently. I'm not convinced the board is actually doing anything when I set the voltage. There aren't any readily accessible points to check with my DMM on the top of the board at least to confirm.

I previously had no problems when playing with Zambezi. The 8120 I have happily did 4.6 GHz at 1.475V with stability.
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