Jawed
Legend
Bing translator says November:
http://www.microsofttranslator.com/...co.jp/docs/column/kaigai/20101101_403541.html
http://www.microsofttranslator.com/...co.jp/docs/column/kaigai/20101101_403541.html
AMD: R9xx Speculation
- Thread starter Lukfi
- Start date
caveman-jim
Regular
Jawed
Legend
I've just noticed that hoom has changed his signature. Tis the death of the foreskin capacitance 
http://forum.beyond3d.com/showpost.php?p=1267379&postcount=317
Staying on topic: If the chip is going to appear in an X2 card, then I think that means it's a sweet-spot strategy chip, not a return to a monolithic, enthusiast-class, chip strategy.
http://forum.beyond3d.com/showpost.php?p=1267379&postcount=317
Staying on topic: If the chip is going to appear in an X2 card, then I think that means it's a sweet-spot strategy chip, not a return to a monolithic, enthusiast-class, chip strategy.
What hint is that supposed to be?
If you combine it with an APU it turns off the discrete GPU in 2D mode or light load conditions (UVD) seamlessly like nv's Optimus?
Looking at TDP it's by no means a very cool GPU.
caveman-jim
Regular
What TDP?
1x6 1x8pin < 300W TDP?
<225W for HD6950 and < 300W for HD6970
I don't think that these numbers indicate, that Cayman is power hungry. Both models use 2GB of GDDR5 according to the leaked slide. The GPU is bigger than Cypress.
Notice, that Cypress with 2GB 4.8gbps GDDR5 consumes 228W. That's more, than Cayman-based HD6950 with 2GB GDDR5, which will be definitely faster...
I don't think that these numbers indicate, that Cayman is power hungry. Both models use 2GB of GDDR5 according to the leaked slide. The GPU is bigger than Cypress.
Notice, that Cypress with 2GB 4.8gbps GDDR5 consumes 228W. That's more, than Cayman-based HD6950 with 2GB GDDR5, which will be definitely faster...
Another important factor is that the Cypress Eyefinity PCB used 16 1Gbit GDDR5 chips, while the Cayman reference board uses only 8 2 Gbit chips. If we put one chip at 1,5 W then we already can take 12 W off the TDP.
caveman-jim
Regular
All that says is it's less than the specification maximum. 226W is less than 300W. 298W is less than 300W. 6870 was 2x 6pin for <225W TDP.... at 151W.
Indeed. Other factors might make you think it is, but that alone doesn't.
caveman-jim: 2GB model of HD5870 consumes 40W more than 1GB model. HD6900 will feature faster modules, more of them (as Triskaine mentioned), so 50-60W of the TDP seems to be related to the different memory configuration (when comparing HD6900 to HD5800). I think it indicates, that the Cayman's TDP and cooling system reflects more the changes of memory configuration, than power consumption of the GPU itself.
caveman-jim
Regular
Triskaine said less memory modules. If we say 8x2W mem chips, that's 16W for RAM. If AMD is ot using double-density '6gbps' mem chips then 16x2W is 32W. That comes with a power phase, so does 22W or 38W, plus fudge factor for inefficiences give you 25W or 42W. But these are made up numbers, no real bearing on anything.
caveman-jim
Regular
Gotcha, yes.
Also a TDP value of [noparse][/noparse]00W is meaningless, as it means only that it's under PCI-E specifications for 6+pin.
Also a TDP value of [noparse]
[/noparse]00W is meaningless, as it means only that it's under PCI-E specifications for 6+pin.
Gotcha, yes.
Also a TDP value of [noparse]
Just quote the example of the 6870 which was <225W before release and turned out just to be 151W.
I think 6970 will have a lower TDP than GTX580.
DarthShader
Regular
I am convinced, the TDP for HD6970 will be exactly 226W, not one W less. Maybe a bit higher, due to 2GB, but surely not more than 250W.
Maybe a bit higher, due to 2GB, but surely not more than 250W.
According to leaked pictures and the rumor mill that would put HD 6970 into a 226-243 watt bracket, wouldn't it?
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