How good is Radeon R9 280X Crossfire?

[BloodyLion]

Hello
Am planing of getting two Radeon R9 280X but Also am thinking of getting Radeon HD 7990. So which of them would be a better choice? and how much of a difference between them?

Another thing is that 2 of the 280X will cost me about $70 less than the HD 7990.

So what should I buy`?

My PC runs on

Corsair XMS3 DDR3 1600MHz 6GB CL9,,, but this is not problem am getting 4GB more soon.
i7 950 not overclocked but I can get it easy at 3.8Ghz.
Asus P6X58D-E
1000W PSU
My current Graphic is GTX Gigabyte 560 Ti SOC @950 Mhz

 

[dkulprit]

I'm rocking 2 r9 280x toxics in crossfire and I am not having any issues and very high fps in games. I had some problems after initial release, but they were driver issues that have since been resolved. I have very smooth gameplay on ultra settings on any game I have played.

The 7990 is not very good. Lots of issues, mainly heat related. I would recommend the 2x 280x's.


Edit: what are the rest of your specs?

 

[BloodyLion]

I'm rocking 2 r9 280x toxics in crossfire and I am not having any issues and very high fps in games. I had some problems after initial release, but they were driver issues that have since been resolved. I have very smooth gameplay on ultra settings on any game I have played.

The 7990 is not very good. Lots of issues, mainly heat related. I would recommend the 2x 280x's.


Edit: what are the rest of your specs?

I've updated my specs what do you think?
Also I hear crossfire and SLI have problems but AMD made new drivers to make crossfire work good is that ture? is this why your cards working smoothly?

 

[dkulprit]

When the cards first came out I was having issues with stuttering, a few driver releases in and it has gone away. The 7990 is techinically a crossfire and will be shown that way too. So if any issues there are with crossfired cards will be there with the 7990. It's 2 chips on a single pcb. So it is a crossfire.

The only thing holding back my gaming right now is my internet connection!