said by BiggA:Also, the assumption of 30mbps is ridiculous. Currently, OnLive uses around 8mbps for 720p, so 12-15mbps for 1080p isn't unreasonable.
If 720p uses 8 Mbps then 1080p would need 18 Mbps. And of course you need overhead. If you need 18 and you only have 18 guess what you're not going to get 18. You should count on needing a connection at least 25% faster than whatever speed is needed. So for 18 that would be at least 22.5 Mbps.
For casual gaming, or as a supplement for traditional locally rendered games for a single user, it wouldn't blow a 250GB cap, but if you have multiple heavy users, you'd sail through the cap in a matter of a week or two.
At 8 Mbps 1 hour a day is 105 GB a month.