Silicon Graphics on Monday introduced a new high-end visualization machine that marks a major change for the company: reliance on mainstream video technology from ATI Technologies. The new Onyx4 UltimateVision system uses ATI workstation video cards instead of the SGI-designed graphics systems the company has relied on for years, said Shawn Underwood, marketing director for SGI's visual systems. The systems start at less than $45,000. But in high-end configurations with 64 of SGI's MIPS 16000A processors, they cost well over $300,000. Read more: CNet News.