$102 after mail in rebate. My question is what do I miss out on by not spending $250 more for the GTX 285? I have 8 gb ddr2 800 ram. 2.8ghz dual core processor.
graphics cards are all proprietary to the software that supports them and that which runs them, on top of the hardware upon which they are developed.
with graphics, i always suggest going with a combination of the most advanced versus the most professional you can afford, with a bias towards professional; at least with nVidia products.
Personally i find ATi products a MUCH better bang for the buck; instead of dual nVidia cards i can get tri-ATi/AMD cards (57XX) for the same prices, that equal or exceed nvidia performance, to a degree.
for my purposes, one machine is ALL AMD/ATi, the other is all Intel/nVidia, it all depends. what do YOU need the machine to do? all the GTS/GTX cards are consumer/gamer cards; its the quadra series that is semi-pro/pro, and higher end ATi cards (5xxx and up IMO)
depends on what you need, system specs, software, etc. Your specs are rather vague.
Mercury Playback Engine works with both the CPU and the GPU. In both respects, it will run significantly faster on any machine when compared with all previous versions of Premiere Pro. With the new GPU features, however, you MUST (read: MUST) have one of the approved cards listed on the Adobe website to get the CUDA acceleration. If an approved card is not installed, you won't get a scaled down CUDA experience, you will get none (as mentioned above).
Honestly in your case, the extra $250 should pay for itself within a project or two. When you are saving time, you are saving money.
So this discussion in regards to Premiere Pro CS5 is not about the vast world of different cards, it's as simple as two categories: cards that ARE approved will work with the Mercury Playback Engine, and cards that are NOT approved will not.
By extension, this means that any ATI video card will not work.
The short list of approved cards is going to be expanded soon to include a few other cards, but the GTX 285 will remain the bottom choice. The two POSSIBLE additions in the lower end will PROBABLY be the GTX 470 and 480 cards.
If you want guaranteed performance and you MUST purchase a new card today, I would highly advise you to stick solely to the cards currently listed as "approved" on the Adobe website. And for that, the GTX 285 is currently the cheapest option.