Gigabyte 970A-UD3

[dereg]

Anyone else with this board notice any voltage problems?

The BIOS is reporting the 12v rail lower than other programs in Windows do.

The board is, on average, also supplying approximately 0.025 less than any value I set the memory voltage to. (at least that is what the BIOS reports are along with other monitoring programs).

[dereg]

No one else picked this board up yet?  I have tried 2 different memory kits (8gb) and PSU's, and the readings are still the same.  Tried all different speeds from 1066-1600mhz too.  Could use some other feedback on this.

[absic]

Hi there,

I don't have your particular board but it does seem as if this is similar to what is happening on other 9 series motherboards. Those of us with the GA-990FXA-UD5 have been questioning this and it does seem as if it is part of the new voltage regulation design. Gigabyte have said:

Dear Customer,
We followed the AMD AM3+ load line calibration guide line, therefore
Load will cause the voltage to drop is normal"

Of course, this was when asked about VDroop on the GA-990FXA-UD5 but voltage regulation also applies to the other components such as RAM.

Is this slight drop causing your system to be unstable or are you just trying to get your head around the figures being reported?

[dereg]

Yea, its more of me trying to understand the numbers.  I have an 870A-UD3 and the options are in 0.020 increments, all of which are pretty steady at set voltage.  My system appears to be running quite stable after a week of testing it out, but the memory voltage just reports a constant 1.630 when i have it set at 1.655 (I set it 0.005 up because 1.650 was causing it to fluctuate and average out at around 1.625 instead of 1.630).

I contacted Gigabyte and basically the options were to RMA (doubt it would change anything as the rest of the voltages are spot on), or wait for a new BIOS version.  Hopefully, the problem can be solved via the BIOS rather than finding out a new revision of all the boards themselves would be required..

[absic]

The fact that the figures are being reported as slightly lower or slightly higher is really more of an annoyance than a major issue and is often resolved when newer BIOS comes along.

Personally, I wouldn't get to hung up on the figures especially as the system is stable and running OK.

[dereg]

Yea, the system is still running stable as far and I can tell.  Since it has been a few weeks, wondering if anyone has this board now and notices similar behavior.  Deciding if it is worth trying to get a replacement before it is too late, if I am the only one who is having this DRAM voltage thing going on..

[dereg]

http://forums.techarena.in/motherboard-processor-ram/1424939.htm

Apparently I'm not alone on this problem now..

[Dark Mantis]

I would agree with absic here on the problem of getting tied up with the fine details when the board is running fine.

[incubus]

I have the same problem with this board(Vdrop) but it is stable  and running like a charm since day one.There are some problems(unlocking hidden cores) but in rest it is all fine.

[Dark Mantis]

I do think that all too often we worry about the figures that our test programs report and what temperature this is and that and how fast this is going compared to a benchmark but the computer is running fine and doing everything we want. Sometimes we just get unnecessarilly sidetracked.

[dereg]

The only problem is that I can't get a 5870 to work with the board.  Had a couple replacements sent from warranty and the computer will still crash, but there is no problem with a 5850.  I'm wondering if the voltage to the card is dipping down or something and would upping the NB/PCIE/PLL setting help?

[Dark Mantis]

Are you sure that your 12v rail on the PSU is heavy enough ? If it is "multi railed" sometimes it can cause this problem even on a large PSU.

[dereg]

Its a 750W PSU with a single 12v rail that is stable at a hair over 12v (over 60A rating on the rail).  F3 BIOS just came out so I suppose I'll test that for a bit now.

[Dark Mantis]

Your PSU sounds alright as long as it is a quality make as the cheap and chearful ones often "over estimate" their outputs often by huge amounts!