I haven't had my old A1200 for a while now, but I ended up ditching 3.9 because of performance problems. It had a DKB '030 Cobra 33MHz IIRC with 32Mb of RAM. I ended up using 3.5 with better results after a very few tweaks.
That system worked very nicely. 4.3Gb Toshiba 2.5" hard drive, and a Squirrel SCSI w/Sony CD Writer (4/8/32). With a 1942 monitor.
