It seems to be a big problem, playing Star Wars Battlefront II (patched
to official v1.10) means pain with ATI cards !
I recently changed my graphics card from a nVidia 9800GT to a Sapphire
HD5770 (Vapor-X). That was really disappointing, because I got only a
boost from 12000 to 14000 points at 3DMark 2006, compared to the old
9800GT. But I was really surprised when starting Battlefront II - now
it's slow, and I have a really high CPU load on *all* cores on my Intel
Q6700 (and that's really enough for that game at 1440x900 pixels).

It seems to be related with that piece of **** named Catalyst software,
but I'm not 100% sure. I can be related in general with ATI cards, too.
I read already some news entries that some guys recommended to set the
cpu affinity of the game to only one core, but then I got not 80% load,
I got 100% load and it's definitely not playable anymore.

At the moment I am sure the HD5770 is not worth the price, because also
all other games are not running faster than before.
The card itself is silent and keeps a low temperature.
No, I do not have any issue with my power supply.
I run the same system I have used before with my nVidia 9800GT card, and
it seems that this just points out the maturity of the card or the
drivers for that card.
Also, I have multi monitor issues, I got "flicker" if I change the gpu
clock with ATI overdrive to just 1 MHz above the (fixed) bios gpu clock
speed. I already checked that this is an issue with the power saving in
2D mode. If you manage to set the GPU speed with AMD GPU Clock Tool, it
works without "flicker", but there is no power saving in 2D anymore then.

If anybody has an explanation for this disaster, please let me know.

Peter