Originally Posted by Alan Gouger
The current burners operate at 2x for BD. Will these be good enough for that. Thanks!!
2X BD speed USB would be fast enough. The write throughput of these things also depend on the USB on the host PC too. Sometimes, they go through a hub internal within the PC and that can slow it down further. Typically 100Mbps is easily reachable on USB<->IDE bridge, HDD can even run up to around 25Mbyte/s (which is a good 200Mbps), but that depends on your system.
It also depends on which chipset is used. A couple of years ago, the ALi chipset used for these things don't go anywhere near 200Mbps.
The 480Mbps USB theoretical speed is on paper only, various implementations cause the actual throughput to slow down when you actually measure it. I find that I can only reliably burn to 8X on 16X DVD drives using USB, but that's just my system.
Btw, I've burnt a lot of BD-RE, mostly filling up the SL disks, and I've found that the burn speed even via IDE is barely 1X on the RE (due to the rewriting nature) even though the target is 2X, I don't think the USB is going to pose a problem until this part of the performance is understood.
This performance is consistent across the BWU-100A and the panasonic using Roxio & Nero. It usually fluctuates between 0.91X and 1.0x
(I have yet to try a BD-R as I am deathly afraid of $10 coasters).