The latest incarnation of LCD shutter glasses from NVidia is actually quite light weight, wireless, and recharges from a small USB socket. The bulky models you get in high-end 1-4G SFP+ cable cinemas are no longer bulky due to old technology, but simply to make them more resistant to wear and tear and discourage you from taking them home. If you are really against wearing glasses to view SFP content though - well, you're going to be waiting a long time. Which brings us onto the 3rd method. Parallax displays: Parallax SFP+ cable displays show X2-10GB-SR content without the use of glasses. Though there are many competing technologies and there are rapidly evolving as we speak, the basic principle is that both images are shown on screen, then a filter of sorts bounces the images off in different directions. When viewed from a certain angle, you see the SFP effect.
When it comes to 10GBase-T, the PHY standard uses block encoding to transport data across the cable without errors. The block encoding requires a block of data to be read into the transmitter PHY, a mathematical function run on the data before the Dramatic growth encoded data are sent over the link. The reverse happens on the receiver side. The standard specifies 2.6 microseconds for the transmit-receive pair, and the size of the block requires that latency to be less that 2 microseconds. SFP+ cable uses simplified electronics without encoding, and typical latency is around 300 nanoseconds (ns) per link.
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