![]() ![]() Hard drives, optical drives, video cards,Īnd RAM can be replaced inexpensively using third-party components. Logicboards are the most expensive component to repair,įollowed by the power supply. Model is the least reliable, while the second-fastest is the most In each generation, except for the final dual-core one, the fastest 2005), C- (18%, power supply, logicboard or 2003), F (27%, logicboard, optical drive) We also note the two components that failed most G5 models had only been on the market for 8 months. Reliability ratings are based on statistics compiledīy MacInTouch in June 2006, at which time the dual-core Power Mac Were far fewer reports of cooling system problems with the 2.5 GHz G5 Reliability, MacInTouch notes that 3-4% of these models hadĬooling-related repairs when the survey was taken in June 2006. Have problems with their cooling systems, particularly coolant leaks. Models, Apple adopted a liquid cooling system.Īll of the 2.5 GHz and 2.7 GHz Power Mac G5 models use liquidĬooling, and the June 2004 2.5 GHz and April 2005 2.7 GHz G5s sometimes For slower models, airĬooling was adequate, controlled by 9 cooling fans, but in faster "thermal zones" inside the G5's tower enclosure. The G5 CPU runs hot, and Apple addressed this problem with multiple Ran their CPUs anywhere from 3.5 to 8.5 times bus speed, which ranged Models ran memory at one-third of CPU speed (in contrast, G4 Power Macs G5 Power Macs ran their memory bus at half of CPU speed, although some Based on IBM's POWER architecture, the newer G5ĬPU cried out for a fast, wide system bus - and Apple provided it. Apple made a big shift when it moved from the G4 ![]()
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