Check the power requirements for the card... and does that PS have the connector(s) to power the card?
Nvidia specs min power supply of 400W for the 550 and 450W for the 460 so I think I "should" be ok with 650W. On the connectors.... that's a really good point. I had assumed the Seasonic would have them but you are right that I should open it and check to be sure. Thanks.
I don't know the power needs of my GTX 285 (in a file somewhere) but I wasn't worried 'cause I have an 850 power supply
I do know that the card has 2 power connections... I presume one for the GPU and the other for the onboard fan
Before you think your PS will work... check your total requirments
Power supply calculator http://extreme.outervision.com/index.jsp (the PRO version)
If I were in your situation now, I would opt for the GTX-550. Lower power requirements (welcome with your PSU), less heat and cooler. It may not be as capable in number of cores as the 460, but that will have only a marginal impact in performance with the current state of affairs.
Thanks again. The NewEgg calculator recomends a 575W PS for my system with the GTX 460. They don't have the GTX 550 on the calculator but the nvidia site shows that it draws about 50W less at max so unless I need more headroom I'm ok.
Also checked the PS power connectors and it does have the duel connectors which the 460 requires. The 550 only requires 1.
Glad you brought up these points for me to double check which I had assumed but feel better knowing. My next build will have a larger PS for sure though.
Thanks very much. Your suggestion saves me a few bucks as well.
I've been an Adobe customer for more than 10 years but never discovered the wealth of info available in these forums.
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I meant to say: 'Less heat and QUIETER' instead of cooler.
My partner in crime, Bill Gehrke very recently tested the 550 in comparison to the 480/580 and our conclusion is that, performance wise, the major measureable impact is in MPEG2-DVD encoding where scaling is prominent, for the rest the impact is marginal and then talking BFTB (Bang for the Buck) the 550 is a very attractive deal.
Now I just have to pick one and there's not much feedback on them yet so I guess I'll just go with one of the main brands.... Evga, Asus, Gigabyte, MSI etc. Specs all looked pretty similar.
Thanks for the advice. Best, Jim
Just marking as answered. Thanks.