OCIA.net takes a look at the OCZ Technology ProXStream 1000w Power Supply in their latest review
One of the good things about the ProXStream that sets it apart from other 1kw power supplies is its small footprint. We measured the unit to be 5 1/2" in length. Most other 1kw units (and even some not as powerful) are much longer, which will cause problems with optical drives and in cases that use a top-mounted exhaust fan. Slotted vents on the "inside" of the unit provide plenty of airflow for the 80mm fan inside to draw air in, across and out the rear.OCZ Technology ProXStream 1000w Power Supply Review