New upgrades advice

[Dawelio]

Hello guys,

So I'm really in love with the Cougar QBX mini case (http://cougargaming.com/en/products/cases/qbx/) and I have a few wonders/questions which I'd like to ask you guys for help/advice etc?.

First one being that I currently have an Corsair HX750i powering my system, which is dead quiet, even under gaming.
Now I also have an Corsair SF600 laying around, which would suit perfect for that case.
Although I am a bit "afraid" that it won't be as quiet as my HX750i, mainly due to being a lower wattage PSU and therefore need to work harder to keep cool. But also that cause the fan is smaller in that unit compared to my HX750i.

And my specs are:

7700K stock (want to try and oc to 5GHz though, most likely not higher than 5GHz (if I can manage that)), ASUS ROG Strix Z270I Gaming motherboard, Corsair Vengeance blue led 32GB @ 3200MHz, ASUS 1080 Strix (thinking of going 1080 Ti Strix later), Samsung 960 EVO 1TB.

2nd concern is a rather big question to ask you all, but how would you plan out the cooling in this specific case? Since it's fan placements are limited due to it's size.

For example, at the top there can be 2 x 120's, but due to the PSU extension cable, a standard 25mm thick fan might not fit there and therefore only 1 fan can be installed there.

Is there a point in having an 90mm and an 80mm Noctua fans in the front and back of the case?...

Lastly, my biggest wonder, which I've tried going over in my head for the last couple of days... I have an Corsair Commander Mini and have atleast 2 fans.
Now on the ASUS Strix Z270I gaming motherboard, there's only 1 (!) fan header and only 1 usb 3.0 header. There aren't any usb 2.0 header for some reason.

So now I'm coming to you all for help, how would you do this? If you wanted to be able to manually control all of the case fans within Windows and a software, such as Corsair Link?.

Thank you all for your help, specially for this lengthy and several questions/topics in one thread. I didn't want to make 3 different threads though, hope you don't mind.

Best regards,
Chrazey

 

[Avet]

HX750i won't fit in that case. It is 150mm and case supports up to 140mm. So i recommend STX PSU. SF600 will be perfect. And it won't be loud. PSUs are very efficient.

For cooling go with 2x120 fans top and bottom. Bottom in, top out. 80mm front in, 90mm back out. Just give slightly more rpm to intake fans to have positive pressure. Z270i has 1 CPU, 1 Chassis, and 1 pump fan header. You can run 3x spliters and be happy camper. Example: 3x intake on CPU header 50%, 3x exhaust on Chassis 40%, and use ASUS software.

 

[S_I_N]

7700k's run hot even hotter when oc'd and your using a case with not so great air cooling might either wnat to reconsider the case or running it stock or mild oc forget 5ghz

 

[AngryGoldfish]

Don't bother with a 5Ghz overclock. It doesn't benefit gaming over a 4.8Ghz which requires significantly less power and produces a lot less heat. Intel could have used proper TIM, but no, they were cheap. It's a shame AMD aren't offering proper ITX support for Ryzen as that would be a far better CPU for multi-threaded operations. A 5Ghz overclock is fun and does somewhat remedy the CPU's inherent deficiencies, but it's not worth it in a small build.