Existing users, 
Upgraded the OS three times already, GigaDesigns just works perfectly! (There is no driver to update) I was going to buy PowerLogix first but their techsupport is terrible now. Also, searching through these comments convinced me.
PowerLogix CPU Director
change cache & cpu clock speed on PowerLogix cards
Version: 2.3b6
GLAD I BOUGHT GIGA DESIGNS!
Feedback Type: Commentary
Contributed by: Siskel & Ebert Tuesday, October 03 2006 @ 05:53 PM PDT
Product Platform: MacOSX
Used Product For: Less than a month
Recommend Product: NO
Comments
GLAD I BOUGHT GIGA DESIGNS! - jcw666
The Power Logix Cards are worthless without software... card only runs at 400 MHZ without software... with software 1.1 GHZ...Wednesday, October 04 2006 @ 09:55 PM PDT
GLAD I BOUGHT GIGA DESIGNS! - Marjansar
As PL says certain models can work and some cannot. Either way the SW on my comp helps with the speeds quite a bit. Reguardless of what PL says. My card is one that works without the SW and it was much more sluggish then W/O. Some cards could not run the newer OS's until this update. Reguardless, PL processor upgrages have been dropping the ball since their buyout. OWC never had this problem!Thursday, October 05 2006 @ 03:56 PM PDT
GLAD I BOUGHT GIGA DESIGNS! - Rufus J
My first upgrade card was a GigaDesigns. The L3 cache stopped working within a year. I have bought a Mercury and a PowerLogix card for different machines. They have been going well for 2 years +. You do NOT need to install or run CPU Director to use the PowerLogix cards. They run just fine using system defaults. All the comments implying the cards are useless without it are ridiculous.Reply to This
Wednesday, October 04 2006 @ 06:35 AM PDT