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From: explainingcomputers
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  • this creepy guy is a very good instructor

  • The guy os good, and im not sure what makes him that :D He kindove funny, but he takes this serious. Nice talking voice too, lol

  • @explainingcomputers adapting and wires USB 3.0 are still expensive but I think this is future, but when I see only difference is that in USB 3.0 we have 3 pairs of signals (on USB 2.0 was only 1). I said about all this specifications becouse many people total forgot about sending current exept data. Anyway u made great video about basics of USB 3.0 ;) You have expensive knowledge too:) Good Job!

  • @explainingcomputers OK about Voltage yes USB 3.0 is compatible with USB 2.0 that why should be this same Voltage and it is +5V +-0,5V. FW400 has 12V and FW800 has 24V and FW1600 30V as I remember... FW like many Apples products hasnt back compatible, this is good fast progress (now we can connect more devices and faster charge) but bad for users...

  • @apaczpl1 Sorry, yes, firewire can supply a wider range of voltages for devices that require them, whereas USB 2.0 and 3.0 only have a 5V line (which is what most devices like consumer HD units require). I'm still pretty sure though that it is the electronics in a HD that determine its physical speed (rotation & servo motions), not the voltage. Only WD Green drives are I think capable of reading data when not rotating at their single rated speed. Personally I never power an HD from a USB socket!

  • @explainingcomputers as I remember my old IPod was charged 3-4 times faster while i connect this to FW than from USB. and this isnt thrue abut this same V ...

    If Voltage will be below min then ur device going to turn down, if device has more than min then work fine but then use some % and after max is fine. HDD uses simple stepper motion, this can be slower or faster like optical device or any another device. Anyway if u connect to electric socet or u have compatible batery then is fine.

  • @TonyBroncos real transfer is summary of many factors, one of this is connect speed, next is speed of target and trasfered disk, next is operation power etc... external disk need also power, is u get him power from USB 2.0 5V and 0,5A, USB 3.0 then u will send about 10V and 1,5A and from firewire 30V and 1,5A. Do u think HDD can use full speed with that low energy? I dont think so, even 5400 rmps. connection on mainboard is importall too etc... This isnt that simple.

  • @apaczpl1 USB 2.0, 3.0 and firewire all supply the same voltage! If firewire chucked 30V into a hard disk it would not be so happy. The current (amps) supplied is different, but not the voltage. Also, if a peripheral like a hard disk does not receive enough power it simply will not work. I still think a practical demo (as in the video) is the best guide, and in practical situations USB 3.0 significantly outperforms USB 2.0 and firewire (and provides more power to run a wider range of devices.

  • thank you so much for this video very informative

  • strange they said USB 2.0 - 480 Mb/s that means about 60MB/s and USB 3.0 4800 Mb/s that means about 600MB/s. Now look at test:

    file size = 850 MB;

    USB 2.0 time = 32.5 s;

    USB 3.0 time = 13 s;

    that means average speed USB 2.0 is 26 MB/s (850/32.5) and USB 3.0 is 65 MB/s (850/13) in real thats ports looking at much slower than FireWire (compare FW 400 to USB 2.0 or FW 3200 to USB 3.0).

  • @apaczpl1 Good observation. Real world transfer speeds are what matter. Nobody ever gets the theoretical ones. However, note that this applies to Firewire too. You cannot compare real USB 2/3 transfer speeds to theoretical Firewire transfer speeds . . . ! :-)

  • @explainingcomputers anyway I don't say about compare real USB 2/3 transfer to theoretical FW transfer, but in test real to real. I know Firewire never get theoretical transfer too but if that port we have much better real transfer, probobly this is that becouse USB 2/3 get much less power, this is good between two devices but this solution while USB port is connet to computer get more CPU power than mean less power geting to transer.

  • @explainingcomputers Anyway for me USB 3.0 has really good system management of power that is much betten than what we have in USB 2.0.

    Wire of connections USB 3.0 has inside optical fiber this is very good idea for future technlogy.

  • On USB2 i never got 60MBps (480mbps). Max i could get with USB2 is 30MBps. So probably USB2-speed is split over 2 USB-connectors. (They are always in pair)

    I got an ExpressCard with USB3.0 card from Belkin, and tested it on my Asrock DeskExpres slot, witch is connected to PCIe 1x. The average speed i got was 65MBps. Maybe 65MBps is the stop speed of the drive (WesternDigital).

    With firewire and esata i get almost always the theoretical speed.

    Networkspeed at most is 75% of theoretical speed.

  • @apaczpl1 It is all about the read write speed of the device, currently a usb 3 flashdrive can write at a max of 100MB/s. while an external HDD 7,200rpm will be able to achieve close to 1000Mb/s and even higher for 10,000rpm. Firewire or USB the bottleneck is the devices, and its all about overhead on the port which is where USB 3.0 trumps all.

  • @apaczpl1 You are not taking into account of operation of writing the data on SATA drive. If there is a limitation of how fast it can write the data then the transfer rate after that point is moot since the bottle neck is not the network speed but the speed of writing data on the drive.

  • your speech sucks :D

  • Willy Wonka is that you?

  • Only kidding, it's actually a great video - very concise and explains it all well. I'm wondering what sort of computer you performed that test on... I take it a high performance computer with a better mobo and CPU would be able to take advantages of higher throughputs?

  • @Flamestar1989 Thanks for the feedback, and I'm glad that you are awake again! The PC used in the resting was a Core 2 Quad with Raptor drives and an SSD, though the USB 3.0 performance was limited (as I say in the video) to running the tests via a PCI express card. This said, I doubt that real-world performance improvements beyond what the video demonstrates could be obtained with most hardware configs (ie motherboard-based USB 3.0).

  • What happened? I feel asleep

  • one more question for you. i got a bran new 1.5 TB seagate pocket external HDD with usb 3.0. when i plug it in to the 3.0 port on my HP Evny 17 (hope brand helps you a little) i get 45/mbps. its the same as any other 2.0 flashdrive i have. something wrong maybe?

    i know its shouldnt be the HDD because i have a fire wire 800 adapter for my mac and it works great on that

  • @Pure2Trance Sounds like there could be something wrong -- perhaps the drivers on the HP Envy are not picking up the port as USB 3.0? You should get significant speed improvements between USB 2.0 adn USB 3.0. Try going into Device Manager and seeing if Windows can find an updated driver for your USB 3.0 ports.

  • @Pure2Trance It's a combination of poor drivers and not too brilliant controller chips. USB 3.0 has been butchered and really poorly implemented thus far. Very few of the chips that handle it are fully compliant with the spec, so there's large variations in performance from system to system depending on how they implement it. Hopefully we'll get a fully baked implementation of both drivers and the hardware when Intel release their new chipset later this year with USB 3.0 support built in.

  • Who has ever got 480Mbps from USB ;)

  • @just4comments DOT Indeed! :-) The numbers do not really matter -- it is the relative speeds that are important here.

  • Hi sir

    so you are saying that even usb 2.0 thumbdrive can be connected to the usb 3.0 port?

  • @ugi338 Yes, absolutely -- although it will only work at USB 2.0 speed. You can connect any USB 2.0 device to a USB 3.0 port and it will work.

  • I feel like he knows where I live just by watching this video

  • could you explain thunderbolt please :D

  • @Pure2Trance Thunderbolt is on my video "to do" list! :-)

  • he totally looks like a pc guy

  • i connected usb 3.0 memory stick, into the 3.0 on my laptop, speed ? 15 mb/s................ i dont think that's normal some help plz ?

  • PLEASE ANSWER: can you plug in an USB 3.0 in a 2.0 port? Does it work lower or just doesn't work?

  • @TheFigaro64 You can plug a USB 3.0 device into a USB 2.0 port using a USB 2.0 lead (not a USB 3.0 lead, as it will not physically fit). In the vast majority of cases it will work but as you say slower. The only possible issue is that USB 3.0 ports can supply more power than USB 2.0 ones, hence some higher-power USB 3.0 devices may not work properly connected to USB 2.0 ports.

    But in general you can connect a USB 3.0 device to a USB 2.0 port and it should work (if you have a USB 2.0 lead).

  • Very well done. I am glad i found this link. So now i look forward to watch his other informative video. Thanks.

  • Great video! I enjoyed watching it.

  • 2:13 USB 3.0 Type B connector, looks like a USB POS 12v/24v/48v connector.

  • oh godddd i cant stand this man

  • Surely the speed is first limited to the speed of the device its being copied to?

  • too many "however"

  • @hisgr8nessmadzak however, his british accent rocks!

  • Nice, he quotes my doctor. "I'd like to talk to you again.....very soon"

  • @4412ag I have a doctor like that too -- together with a surgeon who prefers that I go away for months just in case things magically get better!

  • @explainingcomputers Make more videos. People that are computer lackies use things like this. I had a person today tell me 3.0 was HORRIBLE compared to 2.0 i told him "3.0 has faster data transfer and won't hold up against your shitty motherbord, not my problem"

  • Nice explanation.

  • HOWEVER.. I love n hate his review.. :))

  • I love Chris ! He is amazingly kind of computer bad ass !

  • do this guy ever get laid

  • @xViiPERR1 macs have a faster version called thunderbolt, you can not use usb 3.0 in thundebolt slotsthough or to my knowlede

  • thanks dude...may be you can upgrade yourself to a USB 3.0 interface :)

  • @xViiPERR1 I am not a Mac user, but according to the spec on the Mac website, the iMac 27 had USB 2.0 ports, not USB 3.0. To get USB 3.0 on a Mac I think you currently have to add an expansion card, which you can only do on a tower model. USB 3.0 devices would, however, connect to an iMac 27 -- but would only run at USB 2.0 speeds. Hope this helps!

  • Comment removed

  • @Blinkwing Watchthe video (c.1:08) -- it isn't! FIrewire is only faster than USB2

  • @explainingcomputers I am sorry, I meant Thunderbolt. Will you make a video about that, too?

  • @Blinkwing Yes, Thunderbolt is indeed faster -- and even sounds so! I had not thought of doing a video, but it is a good idea. I will add it to my list! :)

  • @explainingcomputers that sounds great! I am looking forward to it

  • @explainingcomputers - Firewire is 400MBps.

  • @jwd0808 Firewire 400 is 400MBps, but Firewire 800 is, hardly surprisingly, 800MBps! :-) So it depends whether you are talking about the older or newer standard (though granted most firewire connections are 400).

  • Why only 2 ports though on a motherboard or card? I would think they'd be able to add a chip from a hub as well for more than two. Is it for price or power/energy limitations?

  • @sumdude4 I suspect this is a price or -- in many situations -- a physical space issue. The power issue could be dealt with by having only some ports as "high power". And we need more USB3! Both of the ports on my card are now full since Lexar launched their fantastic new USB3 SD and CF card reader (new video soon!).

  • @explainingcomputers

    Most likely price since they are backwards compatible. You'd think they would just replace all usb 2.0 with them instead of having just two usb3.0 and then six usb 3.0 right next to them. But it does give me an idea for an expandable usb 3.0 card.

  • err, i mean two usb 3.0 and six usb 2.0 on the same board

  • do you think i can replace one of 1 or 3 conections in my laptop vaio vpcee23el?

    not me exactly maybe a technician

  • @emmanuelin13 Laptop USB ports will be on the motherboard and hence cannot themselves be replaced. However, you can now purchase ExpressCard adapters with USB3 ports on them (eg search for, StarTech 2 Port Flush Mount ExpressCard). So, if you have a (spare) ExpressCard slot on this laptop you can add two USB3 ports that way -- and fit it yourself as it will be a simple slot-in job.

  • @explainingcomputers meh I want thunderbolt technology! It owns usb 3.0!

  • Comment removed

  • Should have gone to specsavers!! Lol

  • i found the yello wire in an xbox controler wire!

  • You have the most annoying voice and style of enunciation.

  • @airsoftreviewers09

    NO, however........there may be an adapter you can use, however.......I have no idea if it exists.

  • I've just stumbled upon your channel and I must say it's full of quality. Will be using your vids as a refresher for my upcoming Comptia Bridge exam.

  • your voice is so droll and complacent it makes me wanna put my ear next to a screaming baby......

    my problem not yours lol

    good info and straight to the point

  • tayeb ....

  • @airsoftreviewers09 PCI Express cards can't be used in PCI slots or the other way around

  • are you using windows 2k? catch up mate!

  • @ottermanuk The OS shown in the screenshots in this video is Windows XP SP3. However, my current Windows 7 config looks just the same: I don't like OS configs that get in the way, slow things down, or waste processor overhead. :-)

  • @airsoftreviewers09

    It does, havent try it though, read it on a review on pc mag

  • How ever.. hahaha

    

  • 4.8 gps?!?

    :O

  • Perfect video!

  • Thanks, Your Videos Are Great

    Carefully Explained

    Particularly this one

  • wow that is a great increase in speed.. the problems with alot of computers are not the speed of the system but rather the speeds of our peripherals and backup media.

  • @mysticchip usb 2.0 devices connected to a usb 3.0 port will run at usb 2.0 speeds I'm afraid -- there is no increase in tranfer speed except with usb 3.0 devices.

  • awesome nerd face... great video!

  • Thank you, very well explained

  • Highly informative. 

  • @Molotov723 and highly entertaining :P

  • so we're already using usb 3.0??? i thought it didn't exist yet.??

  • @DaBossk IT definately exists -- I am using it! :-) But what I'm really waiting for is a USB 3.0 memory card reader . . .

  • @explainingcomputers There are USB 3.0 USB sticks/thumb drivers, as well as 2.5" and 3.5" external enclosures. The problem is that not many devices can take advantage of it yet. I suppose somewhere in mid 2011 when Intel release native support for USB 3.0 and SATA 3, 6Gb then things will change. Have fun ;)

  • how many mother boards would you say work with usb 3.0

  • @mrkoolaid27 Any motherboard with a PCI Express slot -- ie just about any modern motherboard -- should work fine with a USB 3.0 PCI Express card as shown in the video. However at present very few motherboard have USB 3.0 as standard, though this will change over the next few years.

  • @explainingcomputers As an update to the above, many motherboards now come with at least some (usually two) USB 3.0 ports as standard.

  • @mrkoolaid27 all high end ones do, but due to the nature of Intel not supporting it natively with their chips, the motherboard companies use 3rd party controllers. What that means for the end user ( like us) is that most of not all new motherboards that support USB 3.0 have only 2 ports. I'm not sure if there are any exceptions...

  • wikipedia says usb were released 1995

  • @0GYROHULLU0 It depends on what you mean by "introduced". Even if we use Wikipedia as a source of definitive info (a dubious proposition at best!), it makes clear that the "first silicon" was made available in 1995, but that the USB 1.0 specification was introduced in January 1996. So we are both right, though it think it more useful to list when products were first on the market, rather than in development labs.

  • Its killed off firewire in multimedia devices, its the Microsoft of the connectivity world.

  • @javonoUTube Indeed, firewire only really survives now on DV and HDV camcorders, and they won't last forever.

  • Super C00L!

  • he's also a really great lecturer at uni...i'm still watching his videos after completing his modules

  • Awesome

  • this guy is a cool nerd.

  • @vatossan more nerd than cool :)

  • You're such a nerd, but that's why I like you (:

  • Thank you :)

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