It's called google... http://www.pcw.co.uk/personal-comput...sh-clevo-m590k
gives it a 9881 in 3DMark05, which is pretty stinking high. The m1710 got lower at 8524 here http://www.notebookreview.com/defaul...Dell+XPS+M1710
Does that mean the Clevo is faster than the Dell? Maybe, maybe not. You can change benchmarks a lot by doing a little. Can you overclock dual 7800gtx cards as well as a 7900gtx? Probably not.
3DMark06 benchmarks might be more accurate, since the 512mb and the SLI both will function better in higher stress situations like HDR or AAx16 etc. Physics processing is probably better on the Dell with dual-core, but the Clevo review didn't do any test like that.