» Sun May 20, 2012 12:11 pm
It should be noted that beginning from nVIDIA's disastrous FX 5n00 generation of graphics cards, a temporary agreement came about when both ATI and nVIDIA used the same general graphics card performance numbering, in which the 600s and 700s were the Mainline, medium quality gaming cards, the 800s and 900s were the High End "enthusiast" cards, and anything numbered 599 or less was not considered a full power card for game playing.
During that period, the numbers were larger than the current Geforces have. The first digit had no meaning for performance, just the hundreds digit, and 000 through 299 were reserved for onboard chips, typically included as part of the mainboard's "Chipset". The 300 to 599 numbers were business graphics cards, not game cards. Beginning with the Geforce 8n00 generation, nVIDIA chose to continue increasing the complexity, power requirements, and physical size of their High End graphics chips, which caused them problems when they attempted to simplify the big chips for use at less expensive performance slots. They didn't get their GT200 generation developed fully in a reasonable time frame, so the 9n00 cards were mostly rehashes of the 8n00 cards.
ATI was endeavoring to keep the power envelope down to a more reasonable area, and from the HD 3nXX generation onward, could produce Low End and Mainline cards with lower costs than nVIDIA was able to match and still be competitive in performance. The 8500 GT was a continuation of the Geforce 7300 GT, a borderline card in between Low End and Mainline, although not architecturally related, and not particularly more powerful than the 7300 GT had been. It was inexpensive, and sold in fairly respectable numbers. The 8400 GS was more or less the same very low power that the 7300 GS had been, and so cheap to make that they have kept on making it until now. ATI brought back their X300 as the X1050 when their X1300 had been similarly too costly for its performance class.
The Geforce GT 1n0 cards were still more rehashes from the 8n00 / 9n00 generation, and except for the GT 240, the "GT" prefix became a Low End name, while the "GTS" moved down from the borderline between Mainline and High End, to be a Mainline name. The numbers after that could mean almost anything, and jumped up and down haphazardly for Geforces. The GTX 550 Ti, anyway, is today's Geforce Mainline offering, but there still is an equivalent to the 8500 GT, just named as the GT 540 now.