simonnance - While I do not know about the new DFI mobo, the Abit IN9 32X-MAX *680i chipset* with Tuniq Tower in an Eclipse is a VERY tight fit it you wish to orientate the Tuniq with the cpu fan pointing towards the rear of the case *longest side parallel with i/o shield*. This is the way you should install it in an Eclipse unless you have a psu with a 120mm fan. So I actually had to install the Tuniq on the mobo outside the case, attach the 12v aux lead exernally too, then install the mobo with tuniq and 12v cable attached into the case. I could not use the removable mobo tray. I also had to bend in the little metal catches under the psu bay *the ones used to attach the extra hd bay* as the Tuniq was literally rubbing off them and is now actually touching the underneath of the psu *luckily I have no 120mm fan on the psu* The reason for all this was because the cpu socket is placed very very high on the Abit 680i mobo so the Tuniq was actually overhanging the top edge of the board by a good few mills. Enough so the mobo tray would not slide back in with the mobo/tuniq moutned exernally without the tuniq hitting the psu bay. And installing it internally was difficult as the heatsink was rubbing against the bottom of the psu. If the same thing is true of the DFI mobo cpu socket placement, then you are better off with something like a Scythe Ninja Rev B which will fit no problem (assuming cap clearance around the cpu socket).
So what I am saying is, it all depends on cpu socket clearance on the top edge of the mobo. For reference the Intel Bad Axe 2 has the cpu placed slightly lower then the 680i and has no issues whatsoever with the tuniq/eclipse and does not come near the bottom of the psu bay. I had this setup. So grab a pic of the Bad Axe 2 and compare the cpu socket placement against a pic of the same size of the DFI.