I also have the Imagemate SDDR-92 and can verify that it reads Ultra II
CF cards at about 8.5 MB/sec when connected to my older 1.3 GHz AMD
machine. I haven't tried it on my newer fire breathing Dell with Core 2
Duo processor since it has its own reader which performs at pretty much
the same rate. I take the 8.5 MB/sec +/- a bit to be close to the limit
of the Ultra II.
Have you tried a hookup directly to each of the three USB ports on the
machine without the docking station involved? Have you ever tried your
reader on another machine? Have you ever tried your reader using the
cable from one of the devices that doesn't seem to suffer performance
problems? If you can't find anyone locally to test it for you send me
your SDDR-92 and I'll test it and send it back.
Chuck Norcutt
Daniel Sepke wrote:
> Indeed something is wrong Chuck, but I have not been able to figure out
> where. Perhaps a little more info may help?
>
> My setup is based around an IBM T60 ThinkPad (Core 2 Duo 2.2GHz, 4GB 566Mhz
> RAM, 100GB 7.2K HDD and the b*tchin' 15" IPS Flexview screen) but was
> previously based around an IBM R51. With both machines I get similar results
> from both of my card readers. The first reader was a SanDisk Ultra PC card
> adapter and the second was the SanDisk Imagemate USB 2.0 SDDR-92 (noted as
> USB 2.0 Hi Speed on the bottom). Both readers perform the similarly in
> either machines with extended download times. I purchased the Imagemate
> after getting sick and tired of the long times when emptying cards and was
> disappointed with the results being basically the same. The Imagemate was
> selected based on the charts at Rob Galbraith as giving the best balance of
> read times for my two card types (SanDisk Ultra II and Extreme III both in
> 1GB sizes). The Imagemate was/is connected to the Thinkpads via IBM docking
> units with USB 2.0 cables with other USB 2.0 devices, none of which suffer
> from slow speed transfer. I should be getting very different results from
> both readers but I don't seem to, it seems unlikely that both readers are
> bad but who knows? I will also note that all of the pieces came from B&H and
> thus I believe them to be the genuine article and not counterfeits.
>
> So there you have it. I can't figure out where the problem but the Epson is
> solving it without making me sad :) . If you or anyone else can offer a
> suggestion as to what may be happening please let me know.
>
> Dan S.
>
>
> -----Original Message-----
> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
> Of Chuck Norcutt
> Sent: Tuesday, August 14, 2007 9:50 PM
> To: olympus@xxxxxxxxxx
> Subject: [OM] Re: In Praise of the Epson P3000
>
> You have a serious performance problem somewhere. 2 minutes is about what
> you should expect for a 1GB SanDisk Ultra II connected to a decent USB 2.0
> reader... somewhere around 8-9 MB/sec. If something is taking
> 15 minutes it's not USB 2.0.
>
> My old machine had both USB 1.1 and USB 2.0 connections and once in a while
> I'd accidentally plug the reader or, heaven forbid, a backup drive
> into the wrong socket. Then a large backup might run the better part of a
> whole day and night instead of a few hours. I doubt seriously that the
> problem is the reader. It's what it's plugged into on your motherboard. If
> you still need the USB connection on that machine perhaps you should invest
> in a separate USB 2.0 PCI card.
>
> Chuck Norcutt
>
> Daniel Sepke wrote:
>
>> Now that the machine is here I am glad I got it as at the end my first
>> day of shooting I have backed up five cards worth of data to it with
>> no problems. What really surprised me was the speed for reading cards
>> as it is considerably faster at sucking a 1GB card dry than any other
>> card reader I have owned. I haven't put a stop watch on it but I am
>> guessing it is around
>> 2 minutes versus the up to 15 minutes that my SanDisk USB 2.0 and PC
>> card readers were taking.
>
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