NitroAV FireWire 800/1394b Express Card (34)

Question

After some foot dragging by FireWire direct, today I finally received the NitroAV FireWire 800/1394b Express Card ordered almost a month ago.
First Impressions: Unimpressive at best.
According to the FireWire direct rep, it is supposed to work using the Mac OS built in drivers and require no additional driver....
Upon first insertion, my MacBook Pro promptly went into a kernel panic.
NOT a good introductory performance!
Upon restart, I did get the thing to work, "sort of".
First, it requires AC power even with a 2.5" external drive meant for bus power. Bummer, but so be it. However, less acceptable: it is VERY fussy about sequence, reminding me of evil SCSI voodoo rituals from the past century. Seems it only likes to work once- if I remove the card, it requires a reboot to recognize anything attached to it subsequently.
Functionality is intermittent. Sometimes I can mount and unmount a drive several times in a row, sometimes just once before it fails to recognize the drive and requires another reboot. One drive it took a long time to recognize but eventually it did- only to freeze up rock solid soon thereafter requiring an uncomfortable long push on the power button to shut down- nothing else worked. That drive was a known to be working Lacie, the first a known to be working WiebeTech and both are totally reliable on my G5 and previously completely reliable on the MacBook Pro using the integrated FireWire 400 port.
Unscientific results so far show a modest speed increase transferring a few large files, nothing like double the FireWire 800 speed hoped for. In any case if it ain't reliable it ain't gettin' used. Hoping for a driver solution in 10.4.7? (Wishful thinking)
No one likes a fussy device, much less one doomed to corrupting directories with that kind of behavior. I'm disappointed with Apple for omitting the FireWire 800 port on the 15 inch model and leaving us with this cheesy "solution".
I am not a big fan of dongles, or things like Express cards which are just asking for trouble by introducing intermediary third party connectivity issues exactly like these...
Oh yeh, and the little metal door on the Express Card slot tends to hang open and not snap closed- just to add insult to the whole process.

Answer 1

Well, after two days of use I have a bit of data regarding the NitroAV (and Apple's implementation of ExpressCard/34).
First some general observations: like bigwheel, there are a few too many rough edges to be fully pleased. After inserting the card, a menu bar icon appears next to the Airport icon. On mouse over, the drop down shows "Unknown Vendor" and "Firewire Controller" are greyed out, while the 3rd "Power off Card" is selectable but does NOT power down the card. Looks like I have to shut down the MBP, then eject the Nitro card.
I also can confirm intermittent unmounting and remounting. My latest experiment is to leave the drive mounted and then have it wake up after sleep. So far it's worked once, but will post if it continues to find my FW 800 drive over time.
One major design flaw of the ExpressCard implementation - to engage the card you push in until it clicks, while to disengage the card you merely push in a second time. But how are you supposed to ATTACH FW800 cables?? I find I have to try to hold the ExpressCard firmly so it doesn't go in while fumbling with the FW800 connector. WAY too fussy...
OK, here's some actual test data, involving transfers of 1,000 MB of files (147 Canon RAW files, approx 7 MB each).
I used three hard drives for various transfers -
1. Internal stock 100 GB - 5400 rpm (TOSHIBA MK1032GSX)
2. FW 800 / 400 500 GB - 7200 rpm (Seagate 3500841A in OWC Mercury Elite case)
3. FW 800 / 400 250 GB - La Cie 7200 rpm drive
All test are transfer of 1 GB of files from HD to HD-
Test 1: Internal to FW 400 - 68 seconds
Test 2: Internal to FW 800 - 65 seconds
Test 3: MBP built in FW 400 daisy-chained - 54 seconds
Test 4: Nitro FW 800 daisy chained - 43 seconds
Test 5: Nitro FW 800 port A to Nitro FW 800 port B - 43 seconds
Test 6: MBP built in FW 400 to Nitro FW 800 - 35 seconds
So it looks like there is some speed increase, but I was surprised that mixing the FW 400 and FW 800 ports gave the fastest transfer speeds! The Nitro card is dependent on Apple's implementation of buses, and this seems to be the winning combo. Not that intuitive that shifting one of the FW 800 devices down to FW 400 will speed things up, but that's what my simple test seemed to imply.
I didn't test read times only, but it would seem that these should speed up (and hopefully speed up my primary application of Aperture).
MBP 2.0, 2GB   Mac OS X (10.4.6)