Originally Posted by amd955be5670
EVGA has special editions of their cards such as classy where you can have memory over-voltage, and some other special features. MSI has their lightening line-up. Gigabyte has 0. Atleast for their G1 cards they should enable memory overvoltage. Is there no rep from gigabyte at OCN?
I don't think posting to their official forums as a request for G1 memory over-voltage would help. Since EVGA and ZOTAC already do it I'm sure nvidia isn't denying this feature.
As we compare all of the cards out there in the round-up there are perhaps some 'better' choices for extreme overclocking. I haven't even thought about memory overvolt on these cards until you mentioned it but you are probably right, doesn't seem mentioned anywhere on G1 cards so perhaps not an option for us Gigabyte owners. I think with the apprx 1GHZ overclock on the memory with stock voltage we already get, I wonder how much we'd gain with more mem voltage but an interesting point nonetheless. We may have to just forget about mucking with memory voltage.
Last night I was messing around with voltage on my G1 cards and I can understand why people say you cannot monitor the voltage accurately with software. I don't have a multi-meter but I was able to determine that there were in fact voltage changes taking place even though software displayed a steady 1.275v
It was simple really, I would adjust the voltage slider with Kombuster running until it reported 1.275v. Using that 'spot' on the voltage slider was my baseline where it first hits max "reported" voltage of 1.275v. I was able to complete a 3DMARK run but with some artifacts. Without changing anything other than voltage, I increased the voltage slider up about 10mv and re-ran the test each time with less artifacts until it ran clean. When I maxxed out the voltage slider and re-ran the same test, it crashed proving I was sending more voltage than it could handle.SO..IMO I have been able to identify supporting evidence that the G1 cards with the custom PCB are allowing MORE THAN 1.275v to the GPU.
The question is how much more voltage does the Gigabyte custom PCB actually provide? I read elsewhere someone actually measured it at 1.31v (when software reports 1.275v) but cannot confirm personally (but no reason not to take their word I guess).
Perhaps we have the first variable, the VOLTAGE RANGE? This PCB is capable of between ~1 and 1.31v with a maximum voltage of 1.31v?
That IS an advantage for Gigabyte over some of the other cards out there (albeit maybe not the BEST but one of them).
I don't really have experience of knowing how to tweak the voltage tables to accommodate this voltage but will share what I learn as I go.
Anyone else testing?