As a guy with 4 x 7970s and a pair of SSDs along with an x79 motherboard, let me offer a word of advice: don't do it.
There is an ongoing issue with 7xxx series boards running crossfire along with eyefinity on x79 boards, resulting in hard locks of the system within minutes of launching almost any game. There's a long thread about it here
, and some more details here
along with input from people in touch with AMD.
I received the following email just yesterday as a result of participating in the second thread linked above:
My name is Simon Ng and I come to you from the Graphics Product Group (formerly known as ATI), here at AMD. I am reaching out to you because your email address was provided to me by Juan Lorenzo from the ASUS ROG forums, regarding the Eyefinity bug on the ASUS Rampage IV motherboards. As you are undoubtedly aware, we’ve identified a hardware incompatibility between certain Intel X58/X79 chipsets and our AMD Radeon™ HD 7000 Series products when run in CrossFire™ and Eyefinity. I would like to personally apologize to you on behalf of AMD for the frustration and the inconveniences this has caused you. It’s 100% understandable and while I won’t pretend to know how you and the others feel, I’m an avid gamer myself, so I do sympathize.
Nevertheless, you have my personal word that we’re doing all that we can to address this issue and that your feedback has been instrumental. We will do whatever we can from our end to resolve this and we won’t rest until it’s done. As a sign of your continued support in helping fix this bug, I’d like to provide you with a free coupon to our recently announced NEVER SETTLE bundle. Included in the code below is a copy of Far Cry 3, Hitman Absolution, Sleeping Dogs and a 20% off coupon for Medal of Honor Digital Deluxe Edition. You will need to visit the redemption site at www.amd.com/neversettlepromo
where you be prompted to get your individual keys for each of those aforementioned games.
Your unique promotional code is: IDONT-THIN-KSOB-UDDY
Again, from one game to another, I apologize for the trouble and thank you once again for your continued patience. Stay tuned on the forums as we will provide any and all updates we get. If you have any questions please feel free to reach out to myself or Juan Lorenzo. Thanks again and we’ll be in touch.
AMD Graphics Product Group | firstname.lastname@example.org
Couple this with the fact that while Intel has now released TRIM support in RAID for their latest RST drivers, the one (and only one) modern chipset skipped over is... x79!
I've had this system
since January of this year and it's been nothing but a long string of various incompatibilities from nearly every vendor involved. Turns out buying the most expensive option from a company is a good way to make it to the bottom of the priorities list when it comes to problems, which I assume is simply because they don't sell as many of them.