It depends on your motherboard, how close the CPU socket is situated to the edge of the motherboard, and how much clearance there is between the edge of the motherboard and that divider-panel on the V1000.
I thought somebody said they had to use a Dremel to get an XP120 to fit in this thing, but I cannot be absolutely sure. If that IS the situation, however, you have a choice in conjunction with this beautiful (new??) case -- "to Dremel or not to Dremel -- that is the question."
Or, you could choose an alternate heatpipe cooler model, such as the XP 90. But that is not going to allow you to easily use a 120mm fan for the CPU.