Moving to the hardware forum.
Change the Corsair Hydro 100 for a Noctua NH-D15 cooler. The Corsair is very mediocre in performance and very loud.
Get a more powerful PSU, like the Corsair AX-1000W.
Unless you plan to overclock to around 4.5GHz, the 980Ti is overkill.
You definitely want a PSU bigger than 750W for that system. 850W would be minimum and CC is correct with the 1000W. The 980Ti can be overkill and then again it may not be. Its workflow specific and what applications used. If you use any media that has debayering elements it's definitely not overkill. If you just use 1080 media then it will be if you just use Adobe Applications. Davinci would make use of it either way regardless. So there are some variables there. The 5960X with 64GB of 2666+ can definitely push that card if the media and application will use it. I would suggest going with the 980Ti for future proof workflow changes if nothing else.
Thanks guys, I've now asked them to quote on a 1000W PSU and the NH-D15 cooler. I appreciate the input.
I've just had this system delivered but the supplier swapped the case for a Fractal Design Define XL Low Noise Case and the cooler for a Be-Quiet Dark Rock 2 Silent CPU cooler. They said this would make it quieter for the same price, so I was fine with that. What I didn't notice until I recieved the invoice was the overclocked CPU speed had been dropped to 4.3Ghz instead of the originally quoted 4.4Ghz.
Ok, I'm guessing the loss of 0.1Ghz isn't the end of the world particularly if it will be a bit quiter. But now that this PC has been delivered in the BIOS settings under Ai Tweaker it is showing the target CPU turbo-mode frequency as 4000Mhz. I have also installed CPU-Z and stress-loaded the CPU and the maximum it achieves is 4Ghz.
So is this PC ever likely to come close to 4.3Ghz in the real world? Secondly would that extra 0.3Ghz make a tangible difference when editing with Premiere Pro?
I need to decide how to engage the supplier over this, but don't want to go through all the hassle if it doesn't really make much difference in reality.
They can lead you through the steps to overclock to 4.4 GHz by phone if you want. It looks like they forgot that step. It sure is not difficult, but the very first time it can be comforting to have a more experienced person hold your hand.
Thanks for that advice. I think the problem is more that the suppliers tell me the Be-Quiet Dark Rock 2 Silent CPU cooler is not sufficient to cope with the heat generated by over-clocking to 4.4Ghz. They would have to have the PC back and fit the Corsair Hydro Series H100i GTX Extreme Performance Liquid CPU Cooler, originally quoted to cope with the additional heat.
So I need to decide whether to send the PC back to them and have the Corsair cooler fitted to gain the extra 0.4Ghz overclocking advantage or stick with the quieter Be-Quiet cooler, but forfeit the extra performance. But I do wonder if that extra performance is an illusion that will not be seen in everyday editing? In which case I would rather have the quieter machine.
To give some background info I tend to keep my edit machines for about 3 years. Also I recently purchased a Sony PXW-FS5 and intend to shot interviews in 4K (cropping in for a second shot). Everything else will be shot in 1080 50p 4:2:2 50mbps (XAVC HD). Note that the FS5's 4K codec (XAVC-L, 8 bit, 100mbps) can be quite demanding on CPU's.