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usb2 throughput

post #1 of 3
Thread Starter 
Has anybody recently checked the throughput of a usb2 hard drive? I'm getting tired of the price differences between usb2 enclosures and those that offer firewire - been looking at some enclosures today at the local Fry's and it's killling me that some of the usb2 enclosures go for between $19 and $29. The cheapest enclosure with firewire 400 and sata internal I found on owc's website sells for $89 (Mercury on-the-go 800/400&usb2).
In particular, I'd love to hear from some of the guys here who snatched a hitachi external 200gb (2.5"). I'd love to hear what throughput you get - just when copying a few big files from an internal drive to the external while watchting Activity Monitor's Disk Activity pane.

Regards,
post #2 of 3
Quote:
Originally Posted by analogue900 View Post

In particular, I'd love to hear from some of the guys here who snatched a hitachi external 200gb (2.5"). I'd love to hear what throughput you get - just when copying a few big files from an internal drive to the external while watchting Activity Monitor's Disk Activity pane.

Ok. I just bought one of the 200GB Hitachi external USB2 2 1/2" drives. I cloned my internal drive to it the other day, so it has about 75GB of data in it. My internal drive is a 100GB Hitachi 7200 e7k100 drive. I'm using the first gen MacBook 1.83 w/2GB RAM, OS 10.4.11.

I copied a 6.53GB DMG (no comments, please ) from the internal to the external drive. It took 6 1/2 minutes to copy (1.0 GB/min). Transfers averaged about 17MB/s. It peaked a few times around 18.25 MB/sec.

Another data point: I copied a 2'22 1080p HD trailer I got from Apple over to the drive. Serenity. H.264, 8.13mb/s, 24fps, 1920x816. Playing from either the internal drive, or the external drive with Quicktime showed no problems, skipping or stuttering. ymmv.
post #3 of 3
Thread Starter 
Quote:
Originally Posted by wildrock View Post

Ok. I just bought one of the 200GB Hitachi external USB2 2 1/2" drives. ..... Transfers averaged about 17MB/s. It peaked a few times around 18.25 MB/sec.

Thanks so much wildrock! That's what I'm interested in. I'm getting up to 27MB/s (normally around 24MB/s) with firewire 400, so usb2 seems to be about 30% slower. Maybe I'll have to live with that - those usb2 enclosures are soo much cheaper than anything that includes firewire.

Best,
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