Second hard drive w/PSCS and notebook

CliffordS wrote:

Using a notebook (Thinkpad) running XP with Photoshop CS; would adding a second hard drive, (external via the USB port) for the scratch disk speed up Photoshop CS?

Probably not noticeably.

In most cases, using a separate drive for Photoshop’s scratch file will speed things up considerably; however, a USB connection would be so slow that it probably wouldn’t have any positive impact. I can’t say for certain, but putting the scratch file on a USB device might even slow performance down depending on the speed of your existing internal drive.
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Tom

Unsolicited advertisements cheerfully ignored.

Via USB, I doubt it will be faster, but FireWire may do the job. I have an external FireWire/USB[2] drive (Maxtor). Performance for USB 1.1 sucks, performance for USB 2 is around 25 MB/sec throughput. FireWire results in nearly 40 MB/sec, something your laptop drive won’t achief at all…

Theoretically USB 2 should be faster, but for external harddrives this is not the case.

Waldo

"CliffordS" wrote in message

Using a notebook (Thinkpad) running XP with Photoshop CS; would adding a second hard drive, (external via the USB port) for the scratch disk speed up Photoshop CS?
Clifford

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CliffordS
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Waldo wrote:

[B]Via USB, I doubt it will be faster, but FireWire may do the job. have an
external FireWire/USB[2] drive (Maxtor). Performance for USB 1. sucks,
performance for USB 2 is around 25 MB/sec throughput. FireWir results in
nearly 40 MB/sec, something your laptop drive won’t achief at all…
Theoretically USB 2 should be faster, but for external harddrive this is
not the case.

Waldo

Waldo, if i connect , for example, a 120GB, 7200rpm, 2MB buffe external FIREWIRE hard drive to the notebook would i see enoug difference in working speed to justify the purchase?
Cliffor

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Clifford
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"CliffordS" wrote in message

Waldo, if i connect , for example, a 120GB, 7200rpm, 2MB buffer external FIREWIRE hard drive to the notebook would i see enough difference in working speed to justify the purchase?
Clifford

I just check www.maxtor.com and took a look at the specs on their One Touch external drives. They show the Firewire to have 41MB/sec max sustained data transfer on a 400Mb/sec bus rate. The USB 2.0 shows 34MB/sec sustained on a 480Mb/sec bus rate. I understand Fireware does utilize DMA, while USB does not. The Maxtor external drives were both using 7200 rpm ATA133 drives, but I believe the firewire version uses a 8MB buffer vs a 2MB buffer for the USB version. They have a combo version that allows the use of either interface.

At the data transfer rates they provided a ATA 66 internal drive would still provide better performance than either of these interfaces. Perhaps the latest 1394b firewire which has 800Mb/sec bus rate, will show more promise. I found it interesting that Maxtor is marketing these drives for backup and auxiliary purposes.

Thanks for the help. I guess an external drive won’t cut it. Clifford

Jimmy wrote:

*"CliffordS" wrote i
message
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I just check www.maxtor.com and took a look at the specs on their On Touch
external drives. They show the Firewire to have 41MB/sec ma sustained data
transfer on a 400Mb/sec bus rate. The USB 2.0 shows 34MB/se sustained on a
480Mb/sec bus rate. I understand Fireware does utilize DMA, whil USB does
not. The Maxtor external drives were both using 7200 rpm ATA13 drives, but
I believe the firewire version uses a 8MB buffer vs a 2MB buffer fo the USB
version. They have a combo version that allows the use of eithe interface.

At the data transfer rates they provided a ATA 66 internal driv would still
provide better performance than either of these interfaces. Perhap the
latest 1394b firewire which has 800Mb/sec bus rate, will show mor promise.
I found it interesting that Maxtor is marketing these drives fo backup and
auxiliary purposes.

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Clifford
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On Fri, 5 Mar 2004 11:31:06 -0600, "Jimmy"
wrote:

"CliffordS" wrote in message

Waldo, if i connect , for example, a 120GB, 7200rpm, 2MB buffer external FIREWIRE hard drive to the notebook would i see enough difference in working speed to justify the purchase?
Clifford

I just check www.maxtor.com and took a look at the specs on their One Touch external drives. They show the Firewire to have 41MB/sec max sustained data transfer on a 400Mb/sec bus rate. The USB 2.0 shows 34MB/sec sustained on a 480Mb/sec bus rate. I understand Fireware does utilize DMA, while USB does not. The Maxtor external drives were both using 7200 rpm ATA133 drives, but I believe the firewire version uses a 8MB buffer vs a 2MB buffer for the USB version. They have a combo version that allows the use of either interface.
At the data transfer rates they provided a ATA 66 internal drive would still provide better performance than either of these interfaces. Perhaps the latest 1394b firewire which has 800Mb/sec bus rate, will show more promise. I found it interesting that Maxtor is marketing these drives for backup and auxiliary purposes.

For which they are excellent. I use one and am already considering purchasing another. I currently have the 200Mb drive.

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Hecate

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