Up through their Geforce 9n00 cards, the only digit in the name with any serious meaning was the second one, so that a 6200, 7200, 8200, and 9200 are all basically crap (same for the laptop HD 4200, or course), while the 6800, 7800, 8800, and 9800 were the ones that nVIDIA put the most power into. A year and a half ago, they waved Bye-Bye to that naming system, and haven't made up their collective minds just yet what any numbers mean any more.
We can agree that the GT240 is a good, solid, Medium power Mainline Game card, and the 220 / 230 are nowhere near as good, being far closer to the bottom of medium. The GTS250 is on the borderline going up to High End, and the GTX260 is just above the 250. The GTX 275, 280, 285, and 295 were various high-ranked cards a year and a half ago, but ATI responded to those and had equivalent HD 4n00 cards to match them. A week from now, the largest graphics chip ever designed will be available for sale (nVIDIA Fermi), and for a time will be ahead of the Radeons, other than the HD 5970, until ATI answers that with their own tweaked-faster hardware.
Previously, we could rate a "500" card as being below the Medium, Mainline performance level, but near the top of the Low End Business quality graphics, and most "600" cards were within the Mainline Level, fully capable of gaming. The "700" card would be near the border of Mainline (like the Geforce 250 is). ATI still uses the older system with a slight alteration of dropping the numerous suffix letters that previously were used.
What counts, and is represented by the naming convention, is Core Speed, Memory Speed, Memory Bandwidth, and Shader Unit numbers. The physical amount of RAM is practically inconsequential compared to those four criteria.
All of the above coverage of Mainline and High End Game cards is really academic unless / until the system you want to upgrade is ready to accept the upgrade. A single core CPU is already going to be struggling, and the power supply will need an upgrade as well. AMD has made a a couple of socket upgrades since the A64 3500 came out, and you probably need a new mainboard to take advantage of the Phenom processors.
Gorath
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Modifié par Gorath Alpha, 06 avril 2010 - 06:30 .