Need help with choosing new GPU, SPU and probably new CPU cooling

[Psychomadness]

Hello everyone Sorry if my English is not perfect I still need to learn more...
I'm thinking about replacing graphics cards from r9 280x to r9 390 x2 crossfire.
However I will have to buy a decent power supply because the one I have now is only 600watts.
And there is some problem with cpu cooling...
Here are my pc specs

Motherboard- Asus Sabertooth fx 2.0
CPU-AMD fx 9590 8 cores 4.7
8Gb Ram
CPU cooling-Zalman x5 Performance Cooler
Graphics- ATI Radeon R9 280X 3GB  (link below)
https://pcpartpicker.com/part/msi-video-card-r9390xgaming8g
Power supply-FSP 600 Watt A/PFC 80+ Silver 
Case-Cit Vanquish (here's the link)
http://www.amazon.co.uk/CiT-Vanquish-Gaming-Toolless-Red/dp/B00MNIGFB0

You can skip all those words and just go to the questions at the end of this article , however without reading this you may not know the situation that I have with this build and some of the details .

Zalman x5 Performance Cooler ... Yes this is simple fan cooling for amd processor with 8 cores which was stupid decision from me ...
So the story is, I got a job, rushed to buy new pc with decent graphics card, ridicilous cpu power and ridicolously weak cooling for it ...
I didn't have much experience with building computers, so I found a website and I could choose some of the parts, and I choose fan cooling because I was most familiar with it and I thought that water cooling is too complicated or something like that.
When I got the computer I installed witcher 3 to check how everything works. (Of course I installed all required drivers before that).
It was great experience at the beginning with maybe 40-50 fps at ultra settings, however after maybe 20-30 minutes of gameplay system just freezed . Sometimes it was happening even when I wasn't playing and doing simple tasks could freeze everything. After some research and experiments with bios for cpu I found out that it was the cooling
So I downloaded amd overdrive software and underclocked cpu clocks from 4.7 to 4.2 and I'm using this settings even now for gaming and have no problems at all. However when I do something like video converting, cpu thermal margin goes veeeeery low . Thermal magrin of 10 is just too scary for me so I have to underclock even more to increase it to 20, just for converting though.


Few Simple ( Or not simple) Questions.
1.Will 2 Radeons r9 390 MSI fit in that case ? Vanquish (Link above with specs)
2.What power supply would be the best ? I would choose this one
https://pcpartpicker.com/part/corsair-power-supply-rm1000
3.Is is possible to install water cooling into this case and if not what would be the best of the best fan cooling for this cpu ?
4.Would u prefer any different graphics cards at this price range ? (See budget below)
5. Can I run new and upcoming games in 2016/2017 at 60 fps with 1440p with those radeons ?

My budget for graphics with power supply is up to 1200 euro without water cooling.
With 200 euro more for better cooling if possible.
Ow and radeons only, I'm not an amd fan boy, it's just that my first computer was with glorious Radeon 9600 Pro that could run The Elder Scrolls IV Oblivion at medium settings with flashing weapons when I was exploring the world . I'm just sentimental I guess

Thank you for your attention.
I hope someone will be able to lead me on the right path

 

[Coryhatcher]

I see you want an AMD product, but you seriously might want to consider getting 2 GTX 980 TIs. thats roughly $560 euros per card and it has around 1/3 more performance, which is even better when you compare 2 r9 390x's to 2 GTX 980 TI's. Really, your reason for sticking is not a good one, and sometime, you have to use logic instead of emotion. I hope this helped somewhat. Also, to find your wattage and PSU, you might want to put all of your specs in PCpartpicker to see how much wattage it would use, and then find a highly rated psu from their website. you can also find out if your cards are too big.

 

[GPUEnthusiast]

The short answer is... maybe.

The case you have is incredibly ambiguous and VGA clearance isn't even mentioned on any site that sells it. That includes PCPartPicker. What is mentioned is cooling... which is less than adequate... The case only has a 120mm exhaust fan, a 120mm side fan, and a 120mm front fan.

So here's my recommendation, because I like to give people options. That FX-9590 is going to need a very beefy cooler to keep it cool. We're talking high end 120mm or 240mm AIO liquid coolers, or very high end air cooling like the beQuiet Dark Rock Pro 3.

Option 1: Upgrade the case to a much better mid tower or full tower from a reputable brand. I'm not saying CiT is a bad brand, but the caliber of hardware you're talking about cramming into that thing needs a case with exceptional airflow.
Case Recommendations:
Phanteks Enthoo Pro
Fractal Design Define R4 Windowed Edition

Both the cases I mentioned above will comfortable accommodate and support two MSI R9 390 Gaming 8G cards and high end 120 and 240mm liquid cooling.


Option 2: Also known as the crap shoot.
Use a tape measure to measure the distance from the back PCI E slot covers to the point where they hit any obstacle, this is the maximum length a graphics card can be that will sit in the CiT Vanquish. The MSI R9 390 Gaming 8G will need at least 11 inches or 280mm of clearance.

Keep the case and purchase the Corsair H80i GT liquid cooler (with the intention of mounting it in the rear exhaust fan area)

I would rather you go with Option 1, because with a better modular case, you have plenty of room for the graphics cards, plenty of airflow, and plenty of cooler mounting options to cool the massive FX-9590 chip. Yes, it means you have to take everything out and reinstall it. But the Phanteks Enthoo Pro and Fractal Design Define R4 are both incredibly easy to build in and they have great cable management room.

Update: I own that RM1000 PSU and it's currently powering 2x MSI R9 290X Lightnings and an overclocked i7-4790K. Get it. It's one of the best 1000 watt PSUs on the market.