HipHardware just slapped up a review of the Abit KA7 Motherboard. Here a blurb:

The 6th PCI slot has been made at the cost of the AMR slot, which is the best decision I have seen so far with Athlon motherboards, the AMR slot not only takes space, it increases cost by a little margin, and so far I don´t even want to consider using anything in the AMR slot, it´s just there, taking space and annoying me. 4 DIMM slots, as the only Slot-A motherboard to support more than the usual 3 DIMM slots, and to add the last DIMM slot they also added 6 data buffer chips to ensure the stability of the last DIMM slot.

Check it out