Trying to decide which UPS to get... The following would be connected to the UPS: 2008 Mac Pro (3 hard drives @ 7200RPM, 1 Samsung 850 EVO SSD, and an ATI Radeon HD 5770 graphics card) 20" Apple Cinema Display aluminum external hard drive Netgear 5 port network switch Some smaller peripherals (USB/FireWire hub, card reader, etc.) I believe the Mac Pros have a 980 watt power supply and the 20" Apple Cinema Display is 65 watts...? I was looking at these two UPSs from APC and CyberPower APC Power-Saving Back-UPS Pro 1500 CyberPower CP1500PFCLCD PFC Sinewave UPS System Is a pure sine wave necessary for a 2008 Mac Pro? I've always used APC personally, but the CyberPower model does intrigue me especially since it has a pure sine wave at about $40 more, while the APC model does not. But the APC model is compatible an external battery pack which effectively increases the battery capacity and thus the run time. Any opinions? Thank you.