If you have a 2.7ghz 5200, it is a Brisbane 65nm chip. If the board did not have the proper bios update for this, the reported temps would be way off. I'd look into your motherboard's manufacturer's webpage about a bios upgrade.
Again, If Adobe follows through on their promise, The next Adobe updates will included CUDA compatability, so, no matter what processor you choose, the graphics card would be a much faster way of accomplishing your task.
AMD systems do not require ATI graphics cards. The motherboard I listed is a nVidia chipset as well. This will cause any issues. The quad and tri-core Phenom 1 chips are alright, but each core runs significantly slower than the Phenom 1 based X2 I listed. If you're shopping for an AMD chip...
For your needs, these might not be the best parts, but they are great parts for your application and budget:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814187032
http://www.newegg.com/Product/Product.aspx?Item=N82E16813135085...
No one mentions Betrayal at Krondor? Master of Orion? Ultima Underworld? The Secret of Monkey Island, TES: Arena & Daggerfall, etc.
I guess I'm too old....
I'm all for some low-power (15-45 watt) dual core 45nm variants (and AMD desperately need better mobile variants), but beyond that, I don't see how AMD can justify processors much below (performance wise) their current offerings.
I really don't see the point of going to the 4870 from the 8800GTS at this stage in the game. Might as well wait for further price drops on everything with the product launches that are coming out next month (some next week).
Personally, I'm waiting for the AM3 nVidia boards to crop up...
I can't believe Nvidia didn't buy Via as soon as the AMD/ATI deal was finalized. Intel has a long history of screwing its partners, so no one should be surprised about this latest attempt of theirs.
Everyone seems to want to insist that the iphone is more powerful than the psp, yet, the psp has been running Wolfenstein 3d, Doom, Doom 2, Heretic, Hexen, and Quake for years without framerate issues.