unrealj :
so would this be a good one to use then http://www.newegg.com/Product/Product.aspx?Item=N82E16817182278
No it would not as it has absolutely no relationship to the Capstone series apart from also being sold by Rosewill.
The red 115 / 230 V switch next the power cord plug and on/off switch indicates that it is an older design that is not even 80% efficient (therefore it could not get an 80 PLUS certification).
You have not said what the rest of your system is, but it is extremely unlikely that you will need more than a good 450W PSU. And even if you did need more than a 450W unit a Rosewill Stallion '700W' is not the best way to do that.
g-unit1111 :
This list is a tad outdated but explains the PSU tier very well: http://www.eggxpert.com/forums/thread/323050.aspx
Good for guiding people away from bad PSUs, not as good for anything else IMO.