Wow - USB 3.0 @ 5000 Mbps !

I started looking at different external drive possibilities, and the USB 3.0 looks promising. From what I've been reading, USB 3.0 has theoretial 5000 Mbps output, with 4000 more reality, but that's 500 MBytes per second or 1GB in 2 seconds! HOLY COW!

Should be available starting next year. That's insanely fast. Wonder if it would make sense to use it for a home network (for machines close together at least).

 

Any idea when we can see USB 3.0 on motherboards for custom builds? I plan on building a desktop within 6 months or so.

 

looks like ASUS is startin already or very soon

http://tech-log.org/?p=8775

 

don't forget that your negotiation, protocol overhead, and error correction overhead all come out of that nominal design speed.

 

For those interested:

http://www.everythingusb.com/superspeed-usb.html
http://www.usb.org/developers/docs/

 

Another thread

http://forum.notebookreview.com/showthread.php?p=5127726#post5127726

 

hum.... would that mean that all the peripheral will work on usb 3.0 and that if we have usb 2.0 port we'll be scr*wed?

 

No. It would be useful to at least scan the materials others have so thoughtfully linked to, including in particular the links from kegobeer, which contain the following:

From Most Asked USB 3.0 Questions, No. 5.

 

Even the fastest SSD tranfers at <300MBps, they're getting ahead of themselves XD

 

No, they're future proofing! The next generation of eSATA is supposed to be over 6000 Mbps. But you're right, no existing commercial hard drive or SSD can support that throughput.

Time for RAMDisks my friends. With DDR3 becoming cheaper, and 64-bit OS's becoming commonplace, and triple channel RAM support, one would think 12GB wouldn't be too expensive (4GB x 3) in the future, and dedicated 6GB to a RAMdisk would be awesome. If only they find a way to utilize it to its potential.

 

actually, htwingnut, that's only around 500-600MB/s, and easily reachable right now with SSDs. obviously, all sata ssd's don't support it, as they are limited by sata. but pcie based ssds available right now can go up to 1GB/s.

still, usb is quite future proofing. sata just isn't.

 

I still think SSD will max out USB 3.0. We almost never reach the theoretical maximum speeds of USB. If we can even get half the speed of USB 3.0, I would be satisfied.

 

i hope for usb3 to deliver more real performance than sata2. they worked hard on eliminating those bottlenecks that never allowed us to max out usb2.

and still, usb is "just a tiny simple connector for everything". no one expects it to be the fastest connection. that's what we have special connectors for (sata3, pcie, the ram slot, the cpu slot ).

hm.. a 1TB disk (ssd, i'd say) could get filled/read in around 20 Minutes, compared to 14 Hours now.

Yep, USB 3 is a big step

 

you'll need a fast hdd though

 

no problem, ssd's will deliver that the moment they can (i'd say, at most 2 months after usb3.0 is available, some ocz vertex ultra speed or so pops up, and delivers

 

I dunno. SSD's still have a long way to come for cost per GB. A 512GB SSD costs $1500 compared with an HDD that is $50 (5% cost). Why the need for 5000 Mbps when you can fill the SSD in seconds to full capacity?

If SSD's can even be twice the cost of an equivalent size hard drive, then that'll be a worthwhile investment. I mean, USB for those speeds would typically be used for external storage. But if your external drive is only 256GB (or less) then there's really no need for those speeds.

 

I told you they're getting ahead of themselves.

Unless they develop SSDs with a 600MBps transfer rate that has over 1TB of storage but still be affordable to the consumer they are wasting their time.

They should be researching something more meaningful

 

Give it a year.

 

and usb 3 should last for, say, 5 - 10 years minimum. then, those 1500$ drives can be bought for 10 bucks at your local store.

you want the speed right now, if you know the standard will last.

that's why i hate sata3

 

But if no one buys them at the huge price the price will never go down.

 

True. That's what early adopters and corporations are good for

I used to be an early adopter, but I can't afford that any more. Usually my tech is 1-2 years behind the curve with everyone else now. It's not so bad, really it isn't!

 

It's not entirely true that if nobody buys the prices won't go down. Regardless of whether people buy, it is likely that the tech for manufacturing SSD drives will advance over the years to the point where it is much cheaper to manufacture the drive, and thus will result in cheaper drives for the consumer (or so one would hope). Of course, some of the profits made from early adopters and corporations goes into RnD that would most likely help drive such technology forward at a faster pace.

 

I'm an early adopter support me, I make your stuff affordable

hehe

with usb3, i could have all my disks connected over usb, dropping sata completely. for tiny home servers, that would be quite cool. thinking of the new tiny atom home server from hp. it only has usb ports. if those would be usb3, they could deliver same-designed external additional storage extensions (now that's a big name). and you could just plug them in over usb.


btw, to be on-topic again

does usb3 have ... moar powerrrrrrr!!!?!?!?!. means, can it power on devices that usb2 couldn't? best would be, 3.5" drives without external power supply, but that won't happen, i guess..

 

It's going to take a while for most to make the transition to USB 3.0. You do realize how many devices out there, use USB 2.0 !

 

I think it is backwards compatible.

 

Yes!

According to EverythingUSB and Wikipedia there is a 50-80% power added. They say 50% (150mA from 100mA) for "unconfigured" devices (whatever that means - I think for power only), and 80% (900mA from 500mA) for "configured" devices + 1000mA with the additional connector (dual height).

It is absolutely 100% backward compatible with USB 2.0. To achieve "SuperSpeed" (5000 Mbps) cable lengths can't exceed 3m. They haven't published what the drop in speed is over the length yet.


Photo courtesy of Maximum PC