I was referring to the workstation market, where Sun and SGI were stitching up that market. GX, LX, and Élan were arriving on the market when NeXT only had ND.
3dfx was, for obvious economic reasons, not a slice of the solid, high, or extreme IMPACT graphics that were available on the desktop at the time of its release. It was more competitive with the options for Ultra, but Sun had already conceded the high end graphics market to SGI.
NeXT was already out of the hardware business for three years when 3dfx introduced Voodoo in 1996, same year NeXT bought Apple for negative $400M.