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August 12th, 2003, 12:06 PM #1
- Join Date
- Mar 2002
Speedy Hard Drives - USB 2.0 vs. IDE Controlled
Does anyone know what the difference is in speed between an external USB 2.0 Hard Drive and a IDE Controlled Hard Drive? Basically, I'm debating if external would be too slow for large file transfers, video playback, etc.
Thanks in advance
August 12th, 2003, 12:20 PM #2
On paper USB 2.0 should be faster than ATA133. This is also considering that you have no slower USB devices. It will go as fast as the slowest device.My computer is bigger than yours!
August 12th, 2003, 12:22 PM #3
But using USB would take cycles from the CPU...whereas you have an IDE controller to handle hard drives...so you'd yield faster speeds - I would think.Asus A7N8X Deluxe | AMD AthlonXP 2600+ | 512mb Corsair XMS Extreme DDR
August 12th, 2003, 12:36 PM #4
- Join Date
- Oct 2001
- Augsburg, Germany
First of all, USB HDDs _are_ IDE HDDs - with a USB IDE controller in front of them.
Then, USB 2.0 has a theoretical bandwidth of 480 Mbit (!) per second, or 60 MByte/s. Remember that's raw interface bandwidth; in real life actual transfer rates don't get any higher than 20 MByte/s.
With the best IDE HDDs currently peaking at around 60~65 MByte/s, the question should be answered.
August 12th, 2003, 12:48 PM #5
Do you have any linkage to support that it will only use 1/3 of the bandwidth? Just curious.My computer is bigger than yours!
August 12th, 2003, 02:37 PM #6
Here's a USB 2.0 vs Firewire HDD comparison I found on Google: http://www.thetechzone.com/display.php?i=227&p=1
The gist of it is that sometmes USB 2.0 is faster and sometimes Firewire is faster, but you'll still want to stick with ATA133 (or SATA) if you're transferring large files and don't mind the inconvenience of hooking them up internally.
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