What PSU do i need?

[Eliasu]

Im thinking to buy 2x XFX Radeon HD 7950 3GB GDDR5 but im pretty sure my PSU wont be good enough.
My PSU is XFX 650W Pro Edition,and other specs:
Motherboard:ASUS Maximus VI Gene
CPU:Intel Haswell i5 4670k
HDD:Seagate Barricuda 250GB,Seagate Barricuda 1TB
SSD:San Disk 128 GB
Future Videocard: 2x XFX Radeon HD 7950
What powersupply do i need?

 

[luckiest charm]

First of all, In my opinion do not buy two ATI Cards for Crossfire.
They encounter many issues.

Most common are Black Screens and Micro Sluttering which essentially renders one of the GPU useless. That defeats the whole purpose of buying two cards. Also that is the very reason why AMD is forced to discontinue Radeon HD 7990 (Two HD 7970 in one) very soon.

Instead get two GTX 760 ($500 for two cards) and you would be much happier. Take my word for that!

And as far as PSU matters, get this -

http://pcpartpicker.com/part/xfx-power-supply-p1750xxxb9

This is XFX 750W Semi Modular 80+ Bronze Certified PSU on a huge rebate. No one knows how long such a big discount would last. Grab it quickly since its perfect for two GTX 760s.

 

[Eliasu]

What problems does two ATI Cards encounter?
Because the XFX is the coolest videocard ive found

 

[luckiest charm]

Actually a single ATI video card is okay and performs well but if you use two of them at the same time (Crossfire) you would see that both cards do not scale well and game quality is terrible.

Most of the times game just crashes. Other times the game launches and if you see something near to you, you see the image pixelated.

This is the issue with all Radeon cards across all brands. You should get GTX 760 instead. It is faster than HD 7950 and is slightly cheaper too.

 

[Eliasu]

I prefer AMD so im going to buy an radeon card but is there any xfx cards that can use crossfire?

 

[Eliasu]

I prefer AMD so im going to buy an radeon card but is there any xfx cards that can use crossfire?

 

[luckiest charm]

If you still want to go for AMD then get HD 7950 X 2 and Crossfire them.

Do not complain if you encounter the issues. My responsibility is to warn you about those and its your choice if you want to still buy it or not.
Micro Sluttering and Black Screens on start up are not fixable by any possible means right now.

 

[Eliasu]

I wont take any chance of that,but the thing is i cant find any really cool NVIDIA cards except Asus...
So i will buy 1 7970 XFX thanks

 

[luckiest charm]

This is a much much better choice in my opinion. HD 7970 can max out almost all games with 60 FPS constant.

Good luck.

 

[Eliasu]

Thanks,but im just wondering do you think XFX Radeon HD 7970 GHz 3GB GDDR5 can run bf4 3 monitors in full HD?
I know the game isnt released but im just wondering

 

[luckiest charm]

On three monitors that should run well provided you keep settings on High.
But that is just my estimation since game is not released yet.

By the release of the game HD 8000 / HD 9000 Series would be released as well so you should rather buy that if you can wait. They would bring the best of current graphics technology.