They locked it because it would put it to close to performance of the 1070/1080 if they let you go wild with it and it being $250 no one would buy a 1070. They would just buy a 1060 and overclock it.
I doubt that is the reason. Remember it is in competition with the RX-480 and the difference in performance to the GTX1070 is large enough this should not matter.
No. IMO it's a reliability concern since we're switching to a new process node with pretty high clocks.
Either way we'll get the truth eventually.
There's no proof yet that we'll see a significant benefit to raising the voltage. The TEMPERATURE is just on aspect. Stable power is another.
I believe the main issue will be that the frequency already is pretty close to the maximum of what the design can support.
*For comparison, the RX-480 has much lower frequencies. The REASON for that is the GPU was originally meant as a lower frequency part for MOBILE. They had to switch due to a few reasons and make it a desktop part. The PROBLEM however is that the design, tape-out and fabrication plant creation are not things you can easily change. The design process started about THREE YEARS AGO.
I should also mention that modern GPU firmware and software (i.e. GPU BOOST, and AMD's Wattman) are getting better at squeezing all the performance it can out of a GPU.
The voltage, frequency and temperature are monitored so that the GPU speed can change on-the-fly to get the best performance.
(I brought up the RX-480 in part to demonstrate that AMD also seems to be much closer to their limit out-of-the-box compared to cards a few years ago)
*****Manually messing with the settings can sometimes make performance WORSE.
I'm not saying you shouldn't mess around with it, but you should educate yourself and if in doubt, back off and let the software handle things. Maybe a light overclock, and run an extended benchmark in a loop (to heat up PC) then TEST to provide a BASELINE for performance.
Of course FAN NOISE may or may not be an issue with overclocking though for most cards now it's not much of an issue.
Many people overclock, but do not effectively TWEAK the game settings. You can usually gain far more with a few tweaks then what you can with overclocking. You should know what the FPS goal is and aim for that. Without discussing it, one option is to use Adaptive VSYNC then tweak so you rarely drop below the synch rate (i.e. 60FPS for 60Hz monitor). Adjust AA, Shadows or whatever for the best visual that lets you meet your FPS/synch goal.
(and of course adjust for how SMOOTH the game runs, or if screen tear is bad so VSYNC is a must etc)
Eventually maybe a 1440p, IPS, GSYNC monitor when prices drop.
- wait for info on voltage
- may not see much benefit to overclocking
- educate yourself
- Tweaky (beebabeebabeeba)