Xfinity 2gig. Gimmick or legit?

Just got 2gig service, modem is shipping (xb8), getting a 2.5 NIC Thursday and I already run cat 6...

Now... Currently on a gigabit switch, I'm getting 960mbps. When I get the NIC, I'm planning on running direct to the modem. Will I see faster than 1.5g? I fully understand that 2 solid is impossible, but I'm hoping to get as close to it as possible.

Anyone on the service and pulling proper speed?