Hello, I have a Apple Power Macintosh G5 "Quad Core" (2.5) Specs Identifiers: Late 2005 - M9592LL/A I acquired it from someone at work. They had replaced the two dual core processors 2.5 with a single 2.0 as the original ones had overheating issues. As a result, there are red leds on the motherboard that are lit, I guess due to there only being one processor connected. The machine seems to run perfectly fine. My question is if I can go on eBay and buy a second processor (G5 Dual core 2.0) to attach to the board? So have two of the same processor Please let me know. And would there be a noticable speed increase?