To add to that, you might be lucky and get higher speeds than this but 10Mhz of 800 can't go faster than 75Mbps and with overheads, signal fluctuations/quality your top end is going to be 65 with the wind behind you (just you on that particular cell doing something). 15 - 30 probably more normal.
EDIT: Oh and I believe they are doing aggregated 1800/800 (did someone say that at some point?).
So 5Mhz 1800 you can add another 15 -30 to the total.
Assuming only you on the cell, ratchet strapped 30 metres up to the antenna panel, on a mast with fast backhaul, then you might see 80 - 90Mbps, once every solar eclipse.