Thread: Yay for USB 3.0

Pfft, where's my WUSB? I already have eSATA for externals.

Originally Posted by wanabedriver

Nothing short of a RAID will sustain 360 MB/s.

You'll never hit the max theoretical limit anyway. I haven't really kept up with the USB3 spec, but I know USB2 varied greatly due to the controller and having to offload to the CPU - real world speeds were only about ~25MB/s, often far less.

Originally Posted by wanabedriver

I haven't heard anything about WUSB. What speeds were people expecting?

From what I've read the intent is to provide USB 2 speeds wirelessly, which would be perfectly fine for most uses. Just think of using your thumb drive without taking it out of your pocket/wallet.

Just going off the numbers the article provided from their experiment of copying a 25GB file:
USB 1.0: 9.3 hours = 0.76 MB/s
USB 2.0: 13.9 minutes = 30.7 MB/s
USB 3.0: 70 seconds = 365 MB/s

IF the technology for 3.0 is similar to 2.0 , and 3.0 is still about 12 times faster than 2.0, I would think 'real' speeds would be 200+ MB/s. Not shabby me thinks.

Oh, I have no doubt that it will be faster than 2.0, I'm just questioning the real world throughput. USB has always done worse than Firewire due to lacking a dedicated controller. I'm just wondering if 3.0 can actually provide a real world throughput in the 200MB/s+ realm.

As an aside, I'm pretty sure PCMCIA lacks the bandwidth to support SATA speeds. I believe ExpressCard does, though.


Also, signed on Ethernet's ubiquity. It's an amazing transport technology that is really only now being realized on a large scale. Ethernet is > ATM in many ways. With 10GE and 100GE on the horizon, as well as MPLSoE, I don't really see it going anywhere any time soon.