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48XX Series Interface - Why?

post #1 of 9
Thread Starter 
Ok,

So there has been some debate that any card with more than 512MB of memory and a 256-bit interface won't be able to make use of all of that extra memory making it simply a cash grab for the manufacturers who play off of the bigger is better way of thinking.

After looking at the "leaked" specs I notice that all of the new cards due to come out have a 256-bit interface and some of them have that magical 1GB of memory.

Will this be a ligitimate performance boost? Has ATI found a way to use all of the available memory? Why not go with a 256-bit bi-directional ring-bus turning it into a 512-bit interface like (I think) the 2900XT did?

So far I have only seen 1 or 2 games that benefited from the extra memory so I'm curious to see what others think this will mean for gamers and benchmark junkies.
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post #2 of 9
This has been posted before but whatever. The new ATi cards use GDDR5 memory which can run at frequencies far faster than GDDR3. Hence the bandwidth which is equal to the frequency x bus width is the same or higher and at a cheaper price. A 256-bit buffer with fast memory is a lot cheaper than GDDR3 with 512-bit.
post #3 of 9
Thread Starter 
Faster card at a lower price works for me.

Thanks.
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post #4 of 9
GDDR5 doesn't need a high interface.... it's just fine on 256mb and it's a lot cheaper. And I'm glad about the cheaper part.
post #5 of 9
Plus I read somewhere that cards don't really benefit from anything higher than 256bit anyway. Not saying I agree, thats just what I read.
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post #6 of 9
Quote:
Originally Posted by Spitphire View Post
Plus I read somewhere that cards don't really benefit from anything higher than 256bit anyway. Not saying I agree, thats just what I read.
8800GT vs 8800GTX...
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post #7 of 9
Quote:
Originally Posted by Ecchi-BANZAII!!! View Post
8800GT vs 8800GTX...
Ahhhh
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post #8 of 9
@Spitphire, Ecchi-BANZAII!!!

The higher your screen resolution is and the higher your AA mode, the better is a 8800GTX (G80) over 8800GT.
Just because the old GTX got a higher Memory bandwidth because of the wider interface.


The upcoming ATI RV770 Chips will get the higher bandwidth using a faster Memory not a wider interface.
Same effect, different method ;o)
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post #9 of 9
the 8800GTX and the 8800GTS 512 are about the same in perfomance till you play at higher resolutions. then the GTX starts to kill the GTS.
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