I'm in the market for a new DTR laptop and spend a small but not insignificant time playing PC games--mainly somewhat older titles. (Civ 5 is the only PC game I've bought in 2010). I currently am using a Q6600@3ghz with a Radeon 4850 512mb, but with my kids getting older I don't have the luxury of space for a full tower desktop machine any longer. I'm looking at a new Sandy Bridge-based system from HP that looks about my price, and it has a 6570M 1gb discrete graphics card in it. From what I can tell, it's 400 SP, 650mhz core and can support either GDDR5 or DDR3 at 900mhz, but HP has gone with DDR3.
What kind of real-world difference can be expected from that drop in bandwidth by going with DDR3? AMD's spec sheet has the bandwidth at 57.6GB/sec for the GDDR5 and half that for DDR3. I'd read a few say that such a difference is much smaller than the theoretical numbers would suggest, but they didn't offer up any explanation why. I pretty much figure that such a card is still probably a step down from my 4850, but how much of one is it? I'd like to at least play all of my current games at moderate resolution
My apologies if this doesn't belong in this forum--just figured that it was probably more graphics-centered than a purely laptop question.
What kind of real-world difference can be expected from that drop in bandwidth by going with DDR3? AMD's spec sheet has the bandwidth at 57.6GB/sec for the GDDR5 and half that for DDR3. I'd read a few say that such a difference is much smaller than the theoretical numbers would suggest, but they didn't offer up any explanation why. I pretty much figure that such a card is still probably a step down from my 4850, but how much of one is it? I'd like to at least play all of my current games at moderate resolution
My apologies if this doesn't belong in this forum--just figured that it was probably more graphics-centered than a purely laptop question.
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