I already have two of my 3 Hawaii cards modded with The Stilt's timings and they definitely perform better in mining at least. The 3rd one I couldn't find any custom straps at the time (but maybe I will in that thread so thanks for that) so I just copied a lower strap to a higher one but it didn't help any. I just get the same performance at lower mem clocks is all but my max mem clock is lower.
EDIT: So I did some maintenance on one of my XFX cards which had a failing fan and thought it might be interesting to someone.
Cleaned the heatsink, the failing fan's bearing, greased the fan bearing, and reapplied the TIM. It's now running at about 10°C cooler than the other XFX and the Gigabyte, with slightly better VRM temps as well (better than the other XFX but still about 10°C higher than the Gigabyte). I took a screenshot after a few minutes of ETH mining for comparison. The one I fixed up is referred to as "XFX Black Ed." in the screenshot and the one I left alone is "XFX Double D.".
I'm surprised it improved that much over the other XFX...but how much of that was due to the TIM reapplication alone, and how much was due to other maintenance I'm not sure.
I think I'll take the other two cards apart and do some maintenance on them as well to see how they improve and update this again.
Also I snapped some pics of the card while I had it apart. You can see that the factory TIM application was not the greatest but it wasn't terrible either. BTW those silver and black pieces that stay attached to the card and touch the thermal pads are actually plastic, not metal, which I thought was weird. I would think the VRAM and mosfets would be better off just being uncovered and getting direct airflow from the fans. The Gigabyte's VRMs stay much cooler than the two XFXs so I think XFX definitely could have done better here.
Sorry for the crappy image quality. My smart phone is not that smart (because that's what desktops are for...phones are for phone calls and texts IMO
). It's a cheap LG Android.
EDIT 2: Update
So I did the same maintenance on the other XFX. It wasn't that dusty and the fans were already working pretty normal, so pretty much just redid the thermal paste on that one. Currently after 20 mins of mining it is at 70°C core and 82°C VRM...so a little worse, and fewer gains than the Black Edition (which is at 66°C core and 79°C VRM after 20 min), but still very much worthwhile.
For reference the Black Edition's VRMs would get up to 90°C and core was ~80°C or so before maintenance IIRC, but like I say it had a bad fan...so those gains weren't just from TIM.
I added in the GPU-Z for the Gigabyte card (which I haven't done any maintenance on yet) and it is at 76°C core and 71°C VRM (so already doing way better than the cleaned up XFXs on the VRM) and it has a fan on the fritz also...so I expect after the maintenance on that it will outperform both the XFX cards on core and
VRM temps. We'll see...Edited by bardacuda - 4/1/17 at 10:11pm