Operating temperature: 50° to 95° F (10° to 35° C).Current: Maximum of 12A (low-voltage range) or 5A (high-voltage range).Line voltage: 100-120V AC or 200-240V AC (wide-range power supply input voltage).L pAm is the mean A-weighted sound pressure level measured at the operator position (rounded to the nearest dB).L WAd is the statistical upper-limit A-weighted sound power level (rounded to the nearest 0.1 B).
Option to install two ATI Radeon HD 5770 cards.ATI Radeon HD 5870 with 1GB of GDDR5 memory, PCI Express 2.0, two Mini DisplayPort outputs, and one dual-link DVI port.ATI Radeon HD 5770 with 1GB of GDDR5 memory, PCI Express 2.0, two Mini DisplayPort outputs, and one dual-link DVI port.Double-wide, 16-lane PCI Express 2.0 graphics slot with one of the following graphics cards installed:.Multichannel audio through Mini DisplayPort.Analog stereo line-level input and output minijacks.Optical digital audio input and output TOSLINK ports.Front-panel headphone minijack and internal speaker.Five USB 2.0 ports (two on front panel, three on back panel).Four FireWire 800 ports (two on front panel, two on back panel).Hyper-Threading technology for up to 8 virtual cores.Turbo Boost dynamic performance up to 3.06GHz.8MB of fully shared 元 cache per processor.One 2.8GHz Quad-Core Intel Xeon W3530 “Nehalem” processor.Hyper-Threading technology for up to 16 virtual cores.Turbo Boost dynamic performance up to 2.66GHz.12MB of fully shared 元 cache per processor.Two 2.4GHz Quad-Core Intel Xeon E5620 “Westmere” processors.