I'm seeing that the new 5450 cards are offered in a variety of combinations of 512 mb or 1 gb of either ddr2 or ddr3. My question is this, if all I use my media PC for is playback of blu ray and dvd video, with occasional other video types, .mkv, etc... is there any benefit to having either DDR3, or 1 gb. of ram? In other words, is there any benefit to having either more and/or faster memory for my purposes? I know my current Radeon 4350 with 512 mb. of DDR2 is just fine, but if/when I upgrade to a new card, whether it be a 5450 or a 5570, should I consider getting more and/or faster ram, or just save my money and get a card with 512 mb. DDR2?