The PC Power and Cooling will handle the GTX285. From a budget perspective and since you already have a 8800GT i'd take a step to a GTX260 over the 9800GTX+ or a GTX280. If you can afford it the GTX285 is a fine option.......as long as you're using it for 1900 + resolution.
Price mostly, and maybe power usage and heat. Thats about it, the only possible advantege is you have a choice of getting the (1gb) version, sure 104mb wont make much difference, still the 260 will outperform it. I am thinking between 4850hd, or 9800gtx,+. Just the fing size of the 9800, kills the chance of getting it!
Go for GTX260 216 core.. that'll be steps ahead of 9800GTX+
I'm not sure if it bottlenecks your processor or not..
Let me suggest something... keep your 8800GT and go for a processor upgrade... Upgrade to Phenom2 940.
Before "wasting" money on a GPU, make sure the GPU is actually used by your rendering softwares. To my knowledge, it is much more CPU intensive than GPU intensive unless you have a workstation class GPU. I heard RivaTuner had a GPU load monitor (not sure), if not, you could always monitor the GPU temperature as a derivative measure.
If, as suspected, the GPU is not taxed that much, following meodowla's suggestion and getting a Phenom 2 will give you much better results for your money.
A processor upgrade is probably on hold until I can afford one of those new Intel chips, and hopefully Windows 7 is out sooner rather then later so i won't have to deal with Vista
Can anyone suggest to me a good Radeon card company? I haven't had a Radeon video card in about 5 years. And back then it was just ATI. Ive never had a problem with either Radeon or Nvidia's so if someone could help this noob (thats me!) what is the main differences between the GTX 260 and the Radeon 4870?
And I guess the questions I have after that are
a) am I even going to benifit from a upgrade (considering my MB)
b) can my power supply handle these cards? http://www.newegg.com/Product/Prod [...] 6817703005