So I just bought the
GIGABYTE H81M-DS2
with the Intel Celeron G1840 processor from a shop close to home, I installed Debian, and I got a latency lower than 13 000, then I switched to Ubuntu 10 and test latency does not exceed the 9000, all that has done with 20 windows of glxgears for an hour.
Right now I proceed to do the installation of Linux Mint LMDE 2, later will test it on my router and tell you guys what were the results I obtained. Whatever happens I prefer this motherboard (it hasn't a DVI port) because IMHO is Linux friendly.
(sorry for my neanderthal english)