Thank you guys, i'll pick the Ti tomorrow, i hope that this will be still available. Do you know a good mobo under 100 that i can use? I had find Asrock H81 Pro BTC R2.0 but unfortunately it is now sold out everywhere
For a single card? Pretty much any modern mobo will work. If you want to future proof, get one with 6-8 pcie slots minimum.
For my builds I went cheap: a GIGABYTE GA-H110-D3A and a BIOSTAR TB250-BTC+, both with cheap Celeron CPUs and single 4gb sticks of RAM. Does the damage just fine, at least using Ethos. Boot times are a little slow but once everything starts chugging away you can't tell the difference and the power consumption is good and low...
They are both out of stock and overpriced here in Italy..

Especially the BIOSTAR, that cost something like 230.. I have to find an alternative :/ On Ebay there are some Asrock H81 PRO BTC that comes from China at a very ridicolous price 45, But it's probably not safe to order from there (Becouse of time, orders from china always keep 30-45days to come here)