http://www.guypo.com/technical/not-as-spdy-as-you-thought/
SPDY was only 4.5% faster than HTTPS on average
SPDY was 3.4% slower than HTTP (without SSL) on average
The median SPDY acceleration over HTTPS was 1.9%
SPDY was faster than HTTPS in only 59% of the tests
SPDY is only 2.1% faster than HTTPS when comparing the average load time of each URL/scheme, across batches and network speeds

本気で誤差レベルな感じが

二年後に誕生するHTTP 2.0はGoogleのSPDYがベース
http://jp.techcrunch.com/archives/20120806http-20-spdy-and-friendly/

ASCII.jp：Winnyの金子氏が夢見る次世代高速ネットの世界
http://ascii.jp/elem/000/000/712/712158/
このレベルまでなったらいいんだけどね

高速化ネタ・・・win8だとOS自体も早いけどブラウザのベンチも上がってた気がする