In the next months I'm going to build a new pc for general purpose plus random gaming and I'd like it to be almost inaudible at low workloads such as browsing and watching movies. So... I was thinking about something like the following
(I live in Italy and most of the shopping is likely to be done on [Amazon in Italy], although it's not mandatory)
CPU: i5 6600k when it will be more easily availabe
CPU Cooler: I've got this old Noctua NH-U12P from 2008 with the free upgrade kit to lga115x (which I've got showing the receipt for a lga1155 system build for my dad in 2012). I reckon it's still a pretty decent cooler but if I'm keeping it I'd like to upgrade the fan (I can't get this lower than 630rpm and I'm not satisfied with my 4 nf-p12 overall sound). Here's where I get a stuck the most because I have many things to consider:
- I can buy a new cooler for 40/50€ (like the Kotetsu at 40 or the Ninja 4 at 55), the old NH-U12P can be sold to an interested friend of mine for around 20€ or I can mount it in my dad's pc (which is in dire need of it because is still running with the stock cooler as adverse fate stopped me from buying an aftermarket one when building the system and then pretty much forgot about it after that!)
- I can upgrade the fan of the NH-U12P, but which fan? A fancy fan like a noiseblocker, or maybe 1 or even 2 cheaper fans like the glide stream? Unfortunately it doesn't look like amazon.it has a vast choice on the fans front so I could be a bit limited if a better shop doesn't come up.
Advice on how best to proceed (new cooler, old with 1 fan or old with 2 fans) would be much appreciated. I'd say I can spend up to 30/40€ on these fans, if there's need
GPU: Asus GTX 960 Strix, maybe I'll even consider a 950 ti when it will be out (I've managed to live with an integrated GMA 3500 until now, so no need for anything fancier... Actually my only gaming demand for the current future will be playing Torment Tides of Numenera, but I figured it would be nice to have room for something more)
Motherboard: I'm currently waiting for the reviews of new boards. USB 3.1 and M.2 ports are somewhat important in order to future proof the system, and other than decent on-board audio I don't have many more requirements, so I'm going to opt for something with good fan control. Really light OC might be done in the future. Would you advise for uefi or os based fan control? Right now I'm on a very old system controlling my NF-P12s (2 case fan, 1 heatsink, 1 psu) with LNA/ULNA adapters and bios profiles on my asus p5ev-hdmi, but I guess there are way better solutions

Memory: Some decent 16gb of ddr4 will do the job
SSD: probably the samsung 850 evo 250 or 500gb
HDD: existing caviar green 1,5tb
PSU: I was leaning toward the Straight Power 10 500W CM
Case: Fractal Design R5
Additional intake fan: Antec TQ 140 as seen in your R5 review
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