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Vdroop on giggy UD5 with gulftown

Shmee

Shmee

Memory & Storage, Graphics Cards Mod Elite Member
Super Moderator
hey, so I am so far pretty happy with my gulftown. my only issue is the voltage needed in BIOS to get the chip stable under load. I have LLC enabled, and at 1.43 Vcore in bios, load droops to about 1.392 vcore, which I need to get stable at 4.3. It is a B1 stepping.

My question to experienced users, is, would I be better with LLC off? what is the best way to get my chip stable at 4.3 or above with as little vcore as possible? are there any tricks/mods I can use with the board to try to minimize the vdroop?

I remember anand reviewed the board when it came out, giving it a silver recomendation or something, but also mentioned some vdroop. Still, it seems rather high on this gulftown, higher than on the 2 920's I had.

Advice?
 
Is it for your 24/7 overclock? I personally wouldn't use LLC for a high voltage 24/7 overclock for the reasons mentioned in this article:

http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3184&p=6

With LLC you just don't know what the maximum voltage you will expose your chip to momentarily due to the transient response of the VRMs as you the processor comes off load. I don't have as much of a problem with it at low voltage as the recommended maximum voltage is unlikely to ever be exceeded.

I'm not brave enough to give you a max 24/7 voltage for a chip I don't own either. In my opinion there hasn't been enough testing done on these new 32nm hexacores to say anything with confidence. You will have to be a pioneer unfortunately.

At the very least I would try and establish what sort of voltage you need to set in the BIOS without LLC on to get stable operation. That setting will not give you an exact operating voltage (because of vdroop) but will guarantee that it will never be exceeded by the transient voltage.

It's gonna be a much higher setting - probably in the order of 0.1V ! But be mindful that those sorts of voltages my be occurring without your knowledge (too fast for CPU-z to pick up on) with LLC on anyway.
 
ya, thanks for the advice. I am still waiting for official voltage specs, but at the same time aigo suggests vtt is much more likely to kill chips than vcore. Luckily I haven't touched vtt or BCLK yet.

If I push any higher, I will probably take a try with it off, as per advice.
 
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