AMD’s is utterly dominating the lower end, with the HD4650 nicely under $100, the HD4670 at about $100 and now the HD4830 at just a bit over $100, no matter how tight your budget you can get a card that supports HD playback and will give you impressive gaming performance for the price you pay.  Big Bruin posted a full review of the Sapphire Radeon HD4830 here, you can see just how good a bargain it is.
“I am not exactly sure how I expected the Sapphire Radeon HD4830 512MB graphics card to fare during testing, but it wound up looking more like an enthusiast grade card than an entry level offering. It should be able to handle just about any game without having to sacrifice too much in terms of frame rates or settings, making it a great option for the gamer on a budget.”

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