I just bought a gts 450 for my dell xps 410 and trying to decide if I want to keep it. Spent 200 bucks on it and was wondering if I could get a better card for around that price. My PSU is only 375 watts but a lot of people have told me its underrated. Best buy has a gtx 460 and a 5770. What should I get?
First of all forget bestbuy and go to newegg and tigerdirect. You can get a hd6870 there for 220 and a gtx 470 for about 210, both of which are far faster than the 450. Between ati and nvidia it really depends on whether you want physx and cuda vs eyefinity, since in terms of performance they are always pretty close. The 6870 is faster than a 470 by a small margin however. Just get rid of the 450. Also buy a 550w psu (or higher) when you can. The 6870 consumes less power than the 470
Yeah, Bestbuy.com is kind of weird. They seem to stick with the original MSRP, regardless of the big sales and general discounts found on other sites. The flipside of that is that the GTX580 has a MSRP of $499, so it's actually cheaper on Bestbuy.com than it is on Newegg.com.
A 5770 would be plenty at that resolution. Your gts 450 would be fine as well, but return it. You payed way to much. Unless you want a gpu for a future build, I would not recommend you buy something that will be held back by your cpu.
I recommend at most the HD 5750 which uses about 65w under typically gaming conditions.
The HD 5770 uses 20w watts more than the HD 5750, but I think it will stress the PSU enough that it will begin to shorten it's lifespan. Dell does under rate their PSU, but I would guess by a conservative 25w.