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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 116

post #1151 of 38704
Quote:
Originally Posted by Ken1649 View Post

5760x1200 is only 9,216,000 pixels not 20,480,000 pixels.


So if I were to extrapolate from your comments, there is a formula to derive how much VRAM is needed per pixel?

Quote:
Originally Posted by Ken1649 View Post

YES, WATERBLOCK WILL BE AVAILABLE FOR 7960 6GB. Nothing to worry


How do you know this?
post #1152 of 38704
Quote:
Originally Posted by rcfc89 View Post

This is why I'm doing a 7990/7970 crossfire. Run the monitors from the 6gb 7990. Real world performance close to trifire 7970's with 6gb of vram for 300 dollars less then trifire 7970's with 3gb.

You do know that a dual gpu card with 6GB will only have 3GB per chip. You dont get to use all the vram on the card/
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post #1153 of 38704
Quote:
Originally Posted by Kortwa View Post

You do know that a dual gpu card with 6GB will only have 3GB per chip. You dont get to use all the vram on the card/

Um no. Its 6gb. It doesn't have separate connectors for each individual card inside the 7990. Its wired as one meaning its outputs are pushing 6gb. If what your saying was true why call it a 7990 6gb if its actual output was only 3gb?
 
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post #1154 of 38704
Because it has a total of 6GB of Vram. It is split between the two cores though.

Unless I missed the memo where a 6GB 7990 card but I dont even know how they would fit 12GB of vram on a card without it being amazingly expensive.
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post #1155 of 38704
Quote:
Originally Posted by rcfc89 View Post

Um no. Its 6gb. It doesn't have separate connectors for each individual card inside the 7990. Its wired as one meaning its outputs are pushing 6gb. If what your saying was true why call it a 7990 6gb if its actual output was only 3gb?

doh.gif
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post #1156 of 38704
Kortwa is correct, the VRAM they 'advertise' is split between the gpu's
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post #1157 of 38704
Quote:
Originally Posted by Porter_ View Post

Kortwa is correct, the VRAM they 'advertise' is split between the gpu's

That doesn't make any sense since there are only one set of outputs. Before the 7970 the 6990 and 590 were the only single cards said to do really well in eyefinity because of there vram. What would be the advantage of running a 6990 in eyefinity if it has the same vram as a 6970? Lets see some evidence of this.
 
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post #1158 of 38704
Quote:
Originally Posted by rcfc89 View Post

Um no. Its 6gb. It doesn't have separate connectors for each individual card inside the 7990. Its wired as one meaning its outputs are pushing 6gb. If what your saying was true why call it a 7990 6gb if its actual output was only 3gb?

Sorry man, it doesn't work that way. Think of it as crossfire on one pci slot. The vram is still mirrored between the two gpu's. This is exactly the same as how they did it with the 6990, it was 4gb total ram it was 2gb mirrored. I was originally confused by this at first too.
    
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post #1159 of 38704
Quote:
Originally Posted by rcfc89 View Post

That doesn't make any sense since there are only one set of outputs. Before the 7970 the 6990 and 590 were the only single cards said to do really well in eyefinity because of there vram. What would be the advantage of running a 6990 in eyefinity if it has the same vram as a 6970? Lets see some evidence of this.

They are making an actual 6gb version of the 7970 but only in single gpu format. The 7990 is still, technically, 2x7970 on one slot therefore being 3gb mirrored.
    
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post #1160 of 38704
Quote:
Originally Posted by rcfc89 View Post

That doesn't make any sense since there are only one set of outputs. Before the 7970 the 6990 and 590 were the only single cards said to do really well in eyefinity because of there vram. What would be the advantage of running a 6990 in eyefinity if it has the same vram as a 6970? Lets see some evidence of this.

www.google.com
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