firewire through cardbus slot?

T4x series specific matters only
Post Reply
Message
Author
jjlists123
Posts: 32
Joined: Wed Jun 01, 2005 11:10 am

firewire through cardbus slot?

#1 Post by jjlists123 » Sat Aug 27, 2005 10:05 am

Is firewire through the cardbus slot very fast?

I am using a usb2 external drive and find it to be quite slow. The external drive also has a firewire connection so I was hoping it would speed up access to the external drive.

Also, I find accessing a compact flash card via a cardbus adapter to be very slow (and take 100% of the CPU!). Anyone using a firewire adapter? Does it peg your CPU at 100%?

ariadgr
Posts: 36
Joined: Tue Aug 23, 2005 11:31 am

#2 Post by ariadgr » Sat Aug 27, 2005 10:47 am

I use a PCMCIA to firewire adapter and have no problems. I would recommend an Adaptec card. No drivers needed.

RonS
Moderator Emeritus
Moderator Emeritus
Posts: 1374
Joined: Thu Dec 09, 2004 4:48 pm
Location: Portland, Oregon

#3 Post by RonS » Sat Aug 27, 2005 11:00 am

I use the LaCie card (www.LaCie.com) and get 64MB/sec, bursting to 77MB/sec.
Apathy is on the rise, but nobody seems to care.

Ground Loop
Sophomore Member
Posts: 174
Joined: Sun Jul 10, 2005 2:19 am

Re: firewire through cardbus slot?

#4 Post by Ground Loop » Sat Aug 27, 2005 4:20 pm

jjlists123 wrote:Also, I find accessing a compact flash card via a cardbus adapter to be very slow (and take 100% of the CPU!).
I suspect you're not actually using a CardBus->CompactFlash adapter, but a passive PCMCIA adapter instead.

Was your adapter less than $15?
Is it lightweight/hollow?
Did it not require special drivers?
Does every different CF card detect as a "new device"?
Does it not have a gold ground strip above the connector?
Is it not made by Delkin? :)

It's probably PCMCIA, which is just passive (wires) connecting the CompactFlash to your 16-bit PCMCIA slot. It's very very slow -- 16-bit at 8MHz ISA.

A true CompactFlash adapter presens itself as a SCSI controller, and contains "smarts" to use the 32-bit CompactFlash interface to talk to the PC, while using a faster CompactFlash IDE interface on the other side. They cost about $40, and can run at the full speed of the flash.

jjlists123
Posts: 32
Joined: Wed Jun 01, 2005 11:10 am

Re: firewire through cardbus slot?

#5 Post by jjlists123 » Mon Aug 29, 2005 1:15 am

Ground Loop wrote:
jjlists123 wrote:Also, I find accessing a compact flash card via a cardbus adapter to be very slow (and take 100% of the CPU!).
I suspect you're not actually using a CardBus->CompactFlash adapter, but a passive PCMCIA adapter instead.
I'm using this adapter. Not the microdrive, the CF/Cardbus adapter. (the one pictured here)
http://store.yahoo.com/upgradenation/ibm1gbmic10c.html


So you're saying, if I buy a *real* fireware cardbus adapter, it should run a lot faster?

Ground Loop
Sophomore Member
Posts: 174
Joined: Sun Jul 10, 2005 2:19 am

Re: firewire through cardbus slot?

#6 Post by Ground Loop » Mon Aug 29, 2005 1:33 am

jjlists123 wrote:
Ground Loop wrote: I suspect you're not actually using a CardBus->CompactFlash adapter, but a passive PCMCIA adapter instead.
I'm using this adapter. Not the microdrive, the CF/Cardbus adapter. (the one pictured here)
http://store.yahoo.com/upgradenation/ibm1gbmic10c.html


So you're saying, if I buy a *real* fireware cardbus adapter, it should run a lot faster?
The adapter you are using is a PCMCIA adapter. If you open it, you would find nothing but wire and the two connectors. Zip.

You need a real CardBus adapter. Nobody said anything about Firewire, which would require a CardBus-Firewire card, and then an external firewire reader. Works fine, but probably more hassle.

Here's the full details:
http://www.dpreview.com/news/0310/03102 ... ustest.asp

jjlists123
Posts: 32
Joined: Wed Jun 01, 2005 11:10 am

#7 Post by jjlists123 » Mon Aug 29, 2005 10:53 pm

Ah, I get it. I wasn't aware there was a difference.

Thanks for the info.

l3stat
Posts: 7
Joined: Tue Aug 30, 2005 5:50 am

#8 Post by l3stat » Wed Aug 31, 2005 11:28 am

I'm using a Cardbus Firewire card too, connection's really fast. Sustained 400Mbps vs 480Mbps burst rate. Naw really my T20 is too old to come with USB2.0, can't really comment on that. :roll:

Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “ThinkPad T4x Series”

Who is online

Users browsing this forum: No registered users and 6 guests