Anandtech benches Nehalem

[informal]

Do note that on the one single-threaded test Anand ran, a Nehalem alpha-silicon part running on a crippled mobo outperformed an identically clocked Penryn by 26%

I hope you checked by now the- now edited- scores in AT's article.Basically,by "some weird mistake" Penryn was shown in a lot worse light,with very low numbers(we know for a fact that Cine10 and Pov ray are skewed).All other tests can't be reproduced by Penryn users,but you can see the pattern here...
I don't blame Anand,mistakes can happen.But with this in mind,in single threaded scenarios it is basically 1.05x Penryn.In MT tho,it is scaling a lot better now that back end of the chip is widened and it features IMC and SMT(giving ~1.33x-1.5 Penryn in some MT scenarios,which will help a lot in server space)