2100 does seem to be hard to attain on ambient air.
I'm at 2075MHz @ 1.09v
sustained and this is on an X41 AIO, Shunt mod, liquid metal on the die, with Noctua NF-A14 fans in push pull. 1080 midplate fan at 60%
I run at 29-38C at 20-24C
I could imagine my card doing 2100 with lower load temps in the 17-25C range. In fact I'm "Valley" stable at 2100 right now so could claim it if I was dishonest. I test my OC's religiously with multiple benches, games, etc before I can claim to be remotely solid. I'm talking looping the bench for 15min-30min to get an idea and then some more to confirm stability. I do not allow crashes, driver recoveries, dips or even hiccups. For me it has to work 100% or it's a failed OC in my book. Besides unsustained boost clocks, I bet many let a lot of the above slide when stating clocks.
I'm stable through Valley at 2100 but in the Heaven benchmark both my 2088 and 2100 bins crash or fail.
This in the past, for me has usually signified that I will crash in regular use, in a game, sometime in the near future. In multiplayer, when it happens this SUCKS! So I cannot claim 2100 or even 2088 as stable. Not at 30C anyway. 5-10C Lower, I'm willing to bet I'd fly right on through.
I don't think for a minute that 2100 is a clock wall so much as a wall of diminishing returns, If somebody has a water chiller or wants to drop their AIO in an ice bucket, I encourage you on!!! I don't and this rig has to travel ever so often but I would love to see some sub ambient numbers from somebody.
I'm willing to call this more stable than the Hardware 3D card bouncing off the rev limiter but despite being close, just as with theirs, not a stable 2100 in my book. Would have loved to be at 2100 on a single din AIO with room temp ambients, but sadly it's unlikely to happen. At least not with my card.
On a side note, Heaven for me has more often than not been the Achilles heel. It's been my go to for OC'ing cards. If I can loop heaven, I know I'm more than likely good to go explore elsewhere. Valley seems to be the easiest of the big 4 to loop for me. Opinions and results may vary.
http://www.3dmark.com/fs/12007457Edited by KraxKill - 3/15/17 at 4:18pm