Rig possible upgrade

[Dimitris]

Hello everyone, I'm looking for some advice on the best possible solution.

I used to upgrade very frequently, dabbled with phase change for a while and then built my last rig a few years ago. Last few days - my powercolour 4870x2 died(or possibly died). Anyway, went on to overclockers and purchase a MSI R9 390. Problem - my system is windows vista and is a no no.

So I now need to install a newer version of windows and thought is my old rig strong enough or is it ok? I intend to play games on it but work aswell.

I currently have

Q9550 cpu
Austek some deluxe motherboard
8g of Corsair dd2 ram or something cas, 5,5,5,15.

Also - is the 4870 x2 any good or very ancient already? if I fix it - can I run some sort of crossfire etc?

if upgrade - whats the best combo for overclocking with a budget of around 600ish +-? Ram used to be really expensive - seems a lot cheaper these days?

Thanks in advance.

 

[Dimitris]

My PSu is a Corsair TX750.
I meant the r390 works, ie boots and all but my windows is outdated and can not install the drivers.
My 4870x2 overheated a few times due to the crappy design of the heatsink - would get clogged within a few months. Had to dismantle and clear up a few times until it finally stopped working.