May 19, 2012

Is Everyone Wrong About Light Peak?

What is Light Peak? Images like this don't tell half the story of this next-generation interconnect!

Light Peak isn’t anything yet; it doesn’t exist. But I don’t think Light Peak will become the USB 3.0-killer that many folks suggest. Light Peak is a cabling spec only, not a new protocol that will eliminate everything that currently exists. In other words, Light Peak is a “middle connection” between a computer and peripherals that will retain compatibility with USB, HDMI/DVI, and Ethernet.

What If Light Peak Was Electrical Rather Than Optical?

Light Peak doesn't really need all that optical technology, so why use light at all?

As I considered the possibilities of the new Apple/Intel interconnect technology known as Light Peak, an odd parallel with 10 Gb Ethernet popped into my head. Much of the confusion around Light Peak revolves around connectors, power conduction, and backward-compatibility. Then, like the Grinch, I thought of something I hadn’t before: Why use optical at all? 10 GBASE-T does just fine over twisted pair, and short interconnect distances would reduce power draw to reasonable levels. What if Light Peak was electrical rather than optical?

Light Peak + USB 3.0 = Awesome!

Connectors like this USB 3.0 mini plug meet the tight tolerances of an optical interconnect

Yesterday I talked about Light Peak, the new optical interconnect being developed by Apple, Intel, and others. Today I’m continuing that theme, suggesting a possible productization that would really take Light Peak to the next level: Integrating it with USB 3.0.

Infographic: Real-World Port Throughput Relative To Light Peak

Port Throughput Relative to Light Peak

Just how fast is 10 gigabits per second anyway? To help out, I’ve prepared another napkin-tastic infographic!

Will Apple Call Light Peak “Thunderbolt”?

It looks like Apple will indeed re-brand Intel Light Peak as "Thunderbolt" and combine it with Mini DisplayPort!

Intel has been incredibly tight-lipped about Light Peak. Although I’ve been hounding my contacts inside the company for months, no one has spilled the beans about anything. All I know about Light Peak I learned on the Internet, as they say. Now comes another bombshell: Apple will introduce Light Peak-equipped MacBook Pros tomorrow (February 24) with “Thunderbolt”, a high-speed I/O port!