I will be purchasing 2 SGI Indy R5000 models from reputable.com, and was curious if these are 64 bit systems or 32 bit systems (for that matter, are all/any Indys 32 or 64 bit systems). My guess is 64 because I wiould think IRIX has been 64 for quite some time, but was curious. I use Linux on x86 but will probably use IRIX for a few weeks on the Indy's until I become familiar enough with the machines to try installing Linux. BTW, does gcc work on IRIX? Thanks for the info, Brandon Barker