Maybe at the bottom end. I was using SGI Onyx 2's in the post-production world all the way up to 2005. You couldn't run Inferno on a linux box running Mesa.
I’m not saying that SGI weren’t involved with DRI, but Inferno cost about £1,000,000 a seat, and the suite was booked out at £1000 per hour. There really isn’t any comparison between a PC running DRI graphics and an Onyx 2 with 128 CPUs and 256 GB (yes, GB, even then) of RAM, running (programmable GPU) InfiniteReality2 graphics.
https://dri.freedesktop.org/wiki/DriHistory/