CAMB, non-linear power spectrum and N-Body SIM

[ANAIS GONZALEZ IGLESIAS]

Hi!
I'm working with CAMB in order to reproduce the non-linear matter power spectrum from N-Body simulations. Specifically I'm using CAMB (halofit) to reproduce the nonlinear matter power spectrum, but I need to know how much are the usual differences between the fit and the N-Body results.

I have checked Smith et al (astro-ph/0207664) and even you can see littles differences between the fit and the nbody results, as the axis are logaritmic, it is very difficult have an idea of the real differences (%). Have anyone an idea of how much are these differences?

Thanks in advance for your attention, Anaïs