Originally posted by tacoChang+May 31 2005, 09:41 PM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (tacoChang @ May 31 2005, 09:41 PM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-linczs2000@May 31 2005, 05:41 PM
這板子沒有ATX 12V 4PIN接頭
難道只要靠24PIN+FDD小4PIN就夠用了嗎 :??:
我也是很期待這片,因為有三條PCI,而且玩SLI不用在拔插JUMPER了
有迷有看到24 pin電源輸入CPU側
綠色電感旁邊的黑色8 pin接頭啊? mooon
不用拔插jp...但是ATI指定要買BBA X8y0 CrossFire Edition...
還是有點小麻煩 ;) [/b][/quote]
http://www.beyond3d.com/forum/viewtopic.ph...=asc&highlight=
I've come to the conclusion that the compositing engine is a performance optimisation. As I mentioned in our article, Super AA mode transfers the images via PCI Express, and some followup on that indicates that, right now (it is likely to change in the future, they just haven't had time yet) the composite engine is is more or less bypassed altogether for Super AA.
However, what this tells me is that the chips themselves are capable of the compositing (well, for Super AA they can certainly blend - I have seen two standard boards running before as well), but it would appear that to achieve this current boards need to get the input from the PCI Express bus (there is also the question of whether there is native hardware for this, or its actually running some kind of shader program), but this is not the optimal in terms of performance. The composite engine remove any reliance on the bus for the "performance" modes, also removes any necessity if the graphics core compositing has some overhead, and makes parallelisation a little easier.
We'll see how this changes once they have a seies of boards that were built with this in mind from the off.