I didn't even know you could view temps using nvidia experience. Its likely going to be accurate enough. But as others have said 80 degrees isn't really hot for the 780Ti. I would add however that it shouldn't get that hot playing 'lower end' games.
There shouldn't be any high pitched whine's or similar coming from the PC so I'd get in touch with PCS about that, point them to this thread as it'll help them go through what you've already discussed and tried with us. Might help you get at least some kind of resolution.
There shouldn't be any high pitched whine's or similar coming from the PC so I'd get in touch with PCS about that, point them to this thread as it'll help them go through what you've already discussed and tried with us. Might help you get at least some kind of resolution.