I forgot about the 4830HD your correct it is likely the $100 top performer. However I find the 9800GTX+ consistently out performs the 4850HD, about 14% faster in 1680x1050 resolutions and about 7% faster at 1920x1200. With a price difference around $10-$15 I guess you could say they are on par with each other. I'd still recommend the 9800GTX+ over the 4850HD however. I find HybridSLI power saving features to be nice and your get the "free" PhysX settings in any games that may support it. But there is enough debate about these two cards to keep a researcher busy for years.