Had some fun this afternoon retesting my Sapphire R9 390 w/ Backplate, since I've unlocked 75Hz on 1080p on my venerable Dell S2409W monitor using HDMI. In the past, it's been iffy when pushing past 1140 gpu clocks due to glitching, or requiring too much voltage to be stable. So after much tweaking, I found OC the memory past 1650 is mostly pointless in regards to FPS gains, and so kept them at that, and focused on GPU clocks. I found the sweetspot for performance vs heat/fan noise is 1180 w/ +88mV. I could prolly lower that, but I wanted to actually game for awhile. (1200/1650 required +143 mV, and I didn't want to have that much load for little return to be absolutely glitch-free) Then I spent some time remaking my custom fan profile, so to maximize quietness, yet maintain GPU/VRM to 63C. This was inspired by replaying Dragon Age: Inquisition, and I didn't like it dipping down to 60 fps too often. With the new OC, she varies between 70-75 fps most of the time, with some dips down to 64 when transitioning to new areas. Gotta love Mantle Just thought I'd share my day's work with everyone.