SGI dominatinated the 3D graphics market until NVidia upended them. SGI sold whole integrated workstations while nVidia was an addon board coprocessor. A PC plus NVidia cost much less than a SGI workstation.
I would take a look at archive.org for gaming/hardware sites. Hardware sites used to be a huge thing back then, when every geek was drooling over the latest gear, whether it be CPUs, motherboards, network cards, sound cards (for real SB Live! Ftw!), gpus, etc.
Others you may want to look at:
AnandTech
arstechnica
tomshardware -really great coverage around intel's Rambus RDRAM debacle around 2000.
sharkyextreme
Aces Hardware- this site was really in depth for the time, but it updated infrequently before just stopping altogether around 2004. https://www.aceshardware.com/ Their stuff is still online.
Those were the main sites that I would check that I can remember...
It would be interesting to know how other computing technologies looked like 20 years ago. Is there any good place to find that online?