Does anyone know if the processor PowerPC G5 (2.2) is the most up to date (ie. the 970FX?) I've just bought a brand new Mac and thought the most up to date processor was the 970FX. When I go to About This Mac it brings up PowerPC G5 (2.2) as the processor name. I'm mentioning this because I have a steady whine from my power supply, a problem I though Apple had put right on the most up to date Macs. I'm wondering if I have been sold an 'older' version Mac. Any help greatly appreciated.