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Old March 10, 2011, 06:12 AM
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Just wait till nvidia comes out with its GTX595, if its 2x 580 on 1 card they will need to be able to compete, considering the 6970 2gb already go for ~320 while 580 is 480 pricematched cheapest. ATI might just end up cheaper even so...
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Old March 10, 2011, 09:45 AM
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Originally Posted by oppo4sale View Post
Just wait till nvidia comes out with its GTX595, if its 2x 580 on 1 card they will need to be able to compete, considering the 6970 2gb already go for ~320 while 580 is 480 pricematched cheapest. ATI might just end up cheaper even so...
I'm pretty sure that the 595 DOES NOT have 2x580 cores on it; the thermals and power output required is just too much for one card and keep it at an "affordable" price
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Old March 10, 2011, 10:33 AM
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I'm pretty sure that the 595 DOES NOT have 2x580 cores on it; the thermals and power output required is just too much for one card and keep it at an "affordable" price
More than likely they will do a repeat of what they did with the GTX 295 (= 2 GTX 275's sandwiched together), but with a modified GTX560 or crippled GTX570, ala GX565...

But in all seriousness, these HD6990 cards do nothing for me... as All dual GPU cards usually do.
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Old March 10, 2011, 01:04 PM
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I am still wondering why most if not all the newer video cards are 256bit. I thought that the higher the bit the better the card I have also thought that a card like the 6990 4Gb would be at least 512bit but should be half of the memory so in this case 2Gbits.



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Old March 10, 2011, 01:10 PM
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I am still wondering why most if not all the newer video cards are 256bit. I thought that the higher the bit the better the card I have also thought that a card like the 6990 4Gb would be at least 512bit but should be half of the memory so in this case 2Gbits.


Well, technically the 6990 is 2x256 bit bus.... but I think you are referring to past cards with a very wide bus:

Typically, back in the day, the only way to increase memory bandwidth was to increase the width of the bus (back in the ddr2, ddr3, gddr3 ram days). But nowadays, there is no need for a 512bit bus, since the advent of gddr5 memory modules (and, regrettably, gddr4 memory) which post faster speeds than gddr3 memory... thus increasing the memory bandwidth without increasing the size of the bus.

One of the reasons why the gtx 280 was so hot and loud and expensive is because it has a 512bit bus, which is extremely expensive to produce (in comparison to 256bit or 384bit), and it takes up a lot of space on the GPU die itself... leading to less GPU's manufactured PER wafer of silicon... add to that the yield rate on the silicon and you've got one large and expensive GPU.

Hope that clears things up for you..
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