[gmx-users] Is Generalized Born implicit solvent model faster than explicit solvent model?

[Dd H]

Hi everyone,
I did two reMD simulations with GB implicit solvent and TIP3P solvent using
Gromacs4.5.5 respectively (1 cpu per replica for both of them). My results
show that implicit solvent model is not faster than explicit solvent
model. I'm confused why the implict solvent model is so slow? Or should I
use a newer version of Gromacs?
Thank you in advance!

Best Regards,
Dading Huang