I haven't started a thread on macrumors since 2010, but, well. This thread is simply to explain my experience with acquiring an MDD and using it as my main mac. I wanted to have a MDD for years. Even after acquiring a dual 1.6ghz 7447 upgrade for my QS 2001 G4 ( which already had a single 1.6ghz one ). But.. there aren't often MDD's for sale in my location. Until I bought one locally for $60 CAD. It was a SP 1.0ghz FW800. Was amazing the fact that I could put 2gb of DDR sdram in it. Also, my Flashed FireGL X3 WORKED (as opposed to my quicksilver) in it! Hey, even without a decent processor and with a 133mhz frontside bus, it was quite responsive. But.. I love pushing a machine to it's limits. Bought an Xserve DP 1.33 ghz daughtercard. Unsoldered the mainboard's r676 to get a 167 mhz FSB. I always find it scary but, what a performance increase! My machine was more responsive than my DP 1.6ghz Quicksilver Powermac when I put in the 1.33ghz Dual card. But I love pushing a machine to its limits more than that. I did the overclock of the DP 1.33 ghz board to 1.5ghz. Was also scary. But hey, It's the most responsive G4 I have seen in my whole life. So, i've managed to get a copper heatsink and bought some new fans to replace those that replaced the former ones. STILL a windtunnel, I must say. I haven't silenced it even a bit. But my CPU temp is very low. The screenshot of my sensor is from right now as i post this (nap enabled, of course). The temperature NEVER gets past 40 degrees celsius. The only way to do so is to run altivec fractal carbon as the only task for like 40 mins. Having a MDD powermac is even better than i thought. There must be not much of a difference between my machine and a dual 1.8ghz g5. If there is any question, it'd be a pleasure to answer them.