Great thanks guys, i haven't received my computer yet however I've got 3 of the same screens which are 1080p. Thanks for reassuring me :) Ill definitely order the apple mini dp -> dvi active converter before my computer arrives.
This is only my own very personal opinion based on my own experience over the past few weeks trying to get a stable Eyefinity setup working. So, take it for what it is.
I tried the route of using the ACCELL Active DisplayPort -> DVI adapter and, although I could get Eyefinity working, it was not stable at all! The screen using that adapter would flicker, go completely off and...very rarely...come back on again. More often than not, I'd have to unplug the USB power source cable and plug it back in.
If you're set on using an active adapter, I would NOT connect it to the center...main screen. I would also not connect it to the left screen. If either of these goes out while you're using Eyefinity, you stand to lose access via the screen to the main Windows Menu or whatever you may have active directly in front of you.
I ended up taking that active adapter back and, a week later, I picked up the PASSIVE DP -> VGA Monster brand adapter. I've now had a stable Eyefinity setup for over a week. One other member here took my lead and did the same. We both are having excellent success with this setup.
With this, I have the adapter screen to the left using the DP->VGA adapter, and am using the DVI -> DVI connection on the other two.
So, although I wish you all the luck in the world, I believe you'll NEED all the luck in the world to get a good working stable setup with the active adapter to DVI. Save the cost and go with the passive adapter like I'm using. It's less than half the cost of the active adapters.
At any rate, good luck!!