So am I best to leave Volts at 0 in Afterburner and just up the power limit when overclocking?
You should use boost curve set the voltage even lower than +0 voltage settings on main Afterburner page. The lower the voltage the less power you draw, which means more headroom. Turing overclocking rules for non extreme overclocking are this: as low temp as possible, as low voltage as possible, as high power limit as possible. And also use great memory overclocking, +1000 is nothing unusual on these cards and in some games that like more memory bandwidth memory overclocking is responsible for at least half of the gain you get from overclocking.
Did anyone in here go from gtx1080 sli to a single 2080ti and if so how was it? I really don’t want to read through 20 pages!
I have been using 1080 SLI for almost 2 years with a great success and now I have 2080 Ti Sea Hawk. 2080 Ti is around equal to 1080 SLI with scaling at 1.8x, OC vs OC. Which was also the average scaling for me, so I could say that 2080 Ti is exactly 1080 SLI, only you get this kind of performance everywhere, regardless of SLI support.
So for example, in games like Tomb Raider, Assassin's Creed games, Nier Auomata and other games where SLI scaling was 1.95x, 2080 Ti OC is 10% slower than 1080 SLI OC. But in games like The Witcher 3, where scaling was only like 1.55x, and where 2080 Ti performs very well, the difference is over 20% in favor of 2080 Ti.
So you could say that going from 1080 SLI to 2080 Ti is like having the performance of two cards in one, with the only exceptions being games with exceptional SLI support at 1.95x+ scaling, where 1080 SLI has up to 10% lead.
This also means that both had done a very good job. 2080 Ti replaced two cards, which is what you would expect from next gen flagship, and 1080 SLI provided next gen performance 2 years earlier, which is exactly what SLI is about.
Price of 2080 Ti is also not an issue for 1080 SLI owner, because thanks to high Turing prices Pascal cards didn't loose any value and you can sell them for very high price.
Example in Polish prices:
I sold my 1080s for 1750 each, meaning I get 3500 back, and I bought high-end watercooled 2080 Ti for 6000. So I paid 2500 for the upgrade.
If 2080 Ti came out for 3600, like 1080 Ti, and if Pascal cards received a price cut just like Maxwell did (980 was then discounted from 2400 to 1800 for new ones), used 1080s would go for around 1000-1100, and high-end 2080 Ti's would be at around 4200. So I would pay 2000-2200 for the upgarde. Hardly a difference.