Sun Ultra 20 R.I.P. =================== I have had the Sun Ultra 20 workstation. It's not too exciting because it's just the Tyan Tomcat motherboard with the original Opteron cased into nice metal box with the "Sun Microsystems" label. I bought is as new (it was said that it was the first Ultra 20 in the Czech Republic) and upgraded it few times (added a graphics board and replaced it twice, replaced the original 1.8GHz Opteron with the 2.2Ghz dual core one, expanded the RAM from 512MG to 4GB and replaced the original 80GB SATA HDD with a pair of 320GB ones) . It worked well and for a long time (I used it for computations and then my wife used it as her desktop). Before some years it started to have issues so I have put it in storage. Now I wanted top revive it but it seems that the motherboard is dead (it powers up but fans stay on full speed and there are not further signs of live - I of course tried to remove and to re-seat everything). So I should probably start search for a cheap Tyan Tomcat motherboard now... The case is mostly a standard ATX one so I probably can throw internals away and put a modern AMD Ryzen stuff here but I wish to keep this computer as close to original as possible.. The stock tomcat differs from the Sun version anyway - they removed some ports for use in the Ultra (all the PS/2 ones, one of Ethernet ports and even the serial port).