According to this
LIST a 560 does 114k PPD and a 580 does 344k PPD so some where in between. That is not great numbers but it will put you in the daily top 20 list.
For Windows you need to leave a core/thread free. The FAHClient is not polite as WCG - it muscles in and take resources. I leave two threads on my Windows machines free so I'm sure that nobody staves. I run folding and WCG on one 2700x/Linux and that fuck up WCG. I lose 3-4 hours of the 16 but until now the long time point average of the non-folding identical rig and the folding one are similar, just less run-time.
GT1030 forget about that one. I'm not even sure it will run.