In addition to Eden's statements above I have the follwoing to add (be aware that I own an R9600P so take that as you will). I'd put more links but I'm not at home (where most of my R9600P links are; however these are really the only ones that put it up against the FX5600U revision <b>2</b>;
Here's a good article comparing the R9600P to the FX5600Ultra Revision 2 (gainward overclocked version):
<A HREF="http://www.gamepc.com/labs/view_content.asp?id=gw56ufc&page=1" target="_new">http://www.gamepc.com/labs/view_content.asp?id=gw56ufc&page=1</A>
Xbit Labs puts the R9600P (Tyan version [poor memory, good other features]) up against the FX5600U-R1 , FX5600U-R2, and the R9500Pro and R9800Pro.
<A HREF="http://www.xbitlabs.com/articles/video/display/tyan-tachyon-g9600pro.html" target="_new">http://www.xbitlabs.com/articles/video/display/tyan-tachyon-g9600pro.html</A>
And then their recent review of the Siluro FX5600U-R.2 (unfortunately compared to the same underperforming TYAN R9600P, but it should still give you a good idea) Be sure to check the point in the conclusion about pixel shaders and that affecting future game play;
<A HREF="http://www.xbitlabs.com/articles/video/display/abit-siluro-fx5600ultra.html" target="_new">http://www.xbitlabs.com/articles/video/display/abit-siluro-fx5600ultra.html</A>
I most cases they are very close. The Pixel shader issue may come into play in future games, and may be a big issue. It hasn't been a big issue in this era of DX8/8.1 gaming.
If you can wait 'til sept. there will be the FX5700Ultra with a 256bit memory bus. It will likely outperform the current R9600P and FX5600U-R2 by a good margin. Once again check this Xbit article about the future FX5700U, also note the mention of the PS2.0;
<A HREF="http://www.xbitlabs.com/news/video/display/20030723054322.html" target="_new">http://www.xbitlabs.com/news/video/display/20030723054322.html</A>
In the end we won't know until they arrive. Best bet go with what's cheaper and save the diff. for potential future upgrade. In the end the R9700non-pro might be the best choice of all if you can get that for just a few bucks more.
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