I enjoyed my 030 @50mhz in my A2000, with the 50mhz fpu. But my 060 in my A1200 was a gem,definitely hot though especially when I use to render Lightwave animations. I had to take off the trap door and raise the A1200 up an inch or so and put a house fan right next to it.
By the way I have an old HP with a P4 1.5 socket 423 (A real slug!) that I want to upgrade as cheap as possible.The consenus seems to be the P4 was/is a bloated oven. I already have a Compaq with a Pentium D 820 cpu, and the mb supports Core 2 Duo up to the E6000 series. I seen few socket 478 P4 2.8 with Hyper Threading 1 meg L2 for as cheap as $15 on Ebay and Asus mb less than $20 also with HT support. I figure for the money it wouldn't be bad as long as I get a good heatsink and fan. And a good quality power supply. I have't used an AMD since the K6-2 400 so I am not very knowledgeable with newer AMD cpus. Any advice on this?