Originally Posted by QuickS
No offense but you don't sound too smart yourself.......
Please type in paragraph's, enough with the run on sentences. What I was trying to say is that the way that Nvidia is designing their GT200 card is the best way to go about it IMHO. A 512bit bus and fast GDDR3/4 would be much better than spending loads of money on new GDDR5 technology that hasnt even proven it's worth yet.
Also, who ever said anything about using a 512bit bus on their low end? That would be extremely foolish, they could always stick with the 256bit bus with their low end. Temperature's have never been a problem with the bigger 512 bit bus. The biggest contributer to high temperatures is the process that the core is built on and the heatsink/fan they choose to use. (duh!) Please do some reading before you go around flaming making yourself sound like an idiot.
I didn't claim to be anything, you seem to hold yourself in very high regard for going to college, something that is on the same level of achievement as tying your shoes in the morning. And I'm not going to start arguing about grammar and spelling (since those aren't what I was talking about in the first place), but yours is far the exceptional. And to quote the American Heritage dictionary, a paragraph is "A distinct division of written or printed matter that begins on a new, usually indented line, consists of one or more sentences, and typically deals with a single thought or topic or quotes one speaker's continuous words." Five sentences about a single topic certainly seems to qualify as a paragraph. I probably could have been more precise, but I doubt there is anything in there that is indicative of a run-on sentence.
So, in your humble opinion a 512-bit bus is better than faster RAM. Care to say why? Are there any actual advantages to it, assuming memory bandwidth being the same? You keep saying that GDDR5 is too expensive and shouldn't be researched, but why not? I'm sure both Nvidia and ATI have no problem researching how to make a 512-bit memory interface, there's no real advancement there. Getting a new type of VRAM is at least a technological step forward, not only from an engineering perspective, but from an R&D one as well. You say that GDDR5 hasn't been proven yet - neither has a 512-bit memory interface either, unless you consider the HD2900 series a resounding success.
And yes, of course they would stick to a 256-bit memory interface on the lower end, but how would that affect compatibility between the chips in Crossfire? I honestly have no idea if it would or not, but it seems to me that a large architectural difference like that could lead to problems, or at least keep costs higher on the lower-end, since the cards had to be designed for a 512-bit memory interface, then scaled back. Switching the kind of RAM used seems like a fairly easy and cheap way to instantly create a low-end card.
And why wouldn't a more complex PCB contribute to heat? Double the amount of traces, that's more electricity that has to go more places, which is going to add to the overall heat output of a card. Not as much as the GPU itself I'm sure, but certainly more than using a different type of VRAM.