Now we know why i840 is a workstation chipset! The i840-scores are up to 40% higher than the scores of BX, still up to 8% higher than i820. It's true, for a workstation user it may indeed be worth getting rid of his BX/GX-platform and investing in i840 and the expensive RDRAM.
These results remind us of the office application performance and the Sysmark98-scores. BX is as fast as, actually even a tad faster than i820. Why would anyone be interested in this chipset?