In theory, it *should* be better. Having designed transcoders in the past, I can tell you that *any* active componentry can degrade a signal. Whether or not the degradation is within the visible real of your eye, display device, etc., is left for others to argue. A plain transcoder simply translates from RGB to YUV colorspace through some active differential amplification. And those op-amps can be very good. Assuming the Radeon's output drivers are good (at least as good or better than those in a trascoder you attach), you only stand to lose.
My comment above assumes that the ATI dongle does not really perform transcoding function, but is merely a specialized 'cable' which takes advantage of the Radeon chip's ability to output YUV natively.
The Radeon 8500 is capable of YPrPb output (as opposed to RGB output) with the addition of a dongle.
This is not a transcoder, so video like TV and DVD playback would follow a 10 -bit YUV path right to the DACs. Display graphics (Windows desktop) will be converted from RGB (the native format) to YUV just before hitting the DACs.
This should give the best possible DVD quality of any current graphics card.
Now the disclaimer. I cannot give you a release date for the adapter and SW that goes with it.
I'm wondering the same thing as Ryan. If the YPrPb is in the Radeon itself as opposed to the dongle, then we shouldn't need the dongle at all if we have a breakout cable. Unless they've crippled the VGA port so that the YPrPb can't be output from it.
Maybe YPrPb via VGA port won't be supported by the ATI software, but can be enable via PowerStrip?
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