Scarlet-Tech
Every card is going to react different. Plenty of FE cards can hit the same clocks as the classifieds, and plenty of classifieds are limited to much lower clocks. This is the silicon lottery, and it isn't always perfect. Classified cards are tested the exact same way reference cards are to verify they work at their specified clocks. Unfortunately, that does not guarantee that you are going to get perfect overclocks.
For voltages, you should get a probe it cable, and test the true voltages with a multimeter rather than looking at the software. Software has never been quite right, and may never be able to properly read the voltage.
Understand fully but the last 2 seem faulty to me.. if it was just a overclock limit as always like I've experienced with the last 10 1080 cards then yeah.. no issue run the 2 cards in sli at the lower clocks. I just don't want a custom card that allows for more power for more stable clocks being dynamically lowered by a issue with voltage limit going off all the time.. even at stock clocks. If that's going to happen I might as well buy the fe card.
I've had another custom card the zotac and it was great. The amp edition. With just 1 in there it ran around 50-56c and was stable around 2088mhz. Was the first set of 1080s I bought. But once I added the 2nd the temps went out the window. Upper 60s to 71c. No thanks. Point is the clocks were stable! Custom card with dual 8 pins connections unlike the fe cards I bought next to deal with the heat.
The pny 1080 fe cards were better clockers. Ran 2114mhz.. the best of the 2. Tempts in the 50-56c in sli. But super loud runing 85-100 fans to help keep the clocks up. Would jo jo all over the place.
Bought water blocks for them so I didn't care about sound atm. Then once I read there policy changed this year stating no water cooling I had to return them ans went with good old evga that is fine with heatsink removal ( as always )and water cooling.
Then I had the chance for the ftw hybrids.. much cheaper solution over custom water cooling so I had to snag it and please the wife.. no problem.. didn't open the water cooling andidn't returnespecially the cards.. someone got some good cards as they would play 2124+ mhz.
Then the whole black screen issue with the ftw 1080 effected my hybrid ftw cards. :/ seriously?? So now I'm returning those to evga andon't i had to snag the classifieds..
Long story.. point. Custom pcb cards are the way to go but maybe I may have to return the single golden classified since the odds of me getting another normal card are 1 in 3. Prob be banned from the store after this return.