for graphics benchmarks
www.futuremark.com
download 3Dmark03 and 3Dmark05
you could dld 3dmark01 also..although it has ceased to be a good graphics benchmark nowadays and is more of a system wide benchmark.
system (cpu/memory/hdd) benchmarks:
pcmark04/05 again on futuremark's website.
sissoft sandra (
http://download.guru3d.com/sandra/ )
everest home edition (
http://www.lavalys.com/ )
some more stuff to do if u havent done so already:
i) enable cool n quiet
ii) download nvidia ntune ( allows u to play around with the clock speeds, doubles up as a benchmarking/tweaking/monitoring utility)
download rivatuner (
http://download.guru3d.com/rivatuner/ ) for monitoring/overclocking ur graphics card. i suggest u monitor all temperatures atleast initially even though u might not plan to overclock...
Something i shud add here is that all of them are synthetic benchmarks... u should obviously care more about real world performance + stability as compared to any benchmarking program!
bench at default settings for every program.
I dont think any additional settings are required.....Play around with the system a bit ...that should help u getting the most out of ur new hardware