17in MBP ExpressCard question

[yusukeaoki]

I tried googling this but couldnt seem to find the answer.

As many of you know FireWire has its own "CPU".
It doesnt have to share the CPU power unlike USB.
(So connecting a USB would slow the computer but FireWire wont cause that)

What about ExpressCard slots?
I got a USB3 card in right now and was wondering if this also shared CPU?
Or is it like FireWire where it doesnt put any burden?
Now I have 5 USB ports including the ExpressCard one and using 3 of USB2 uses a lot of CPU power.
But does it cause the same problem with ExpressCards?

Thanks in advance.

 

[yusukeaoki]

Ok, I just searched again and it seems like the ExpressCard slot has its own power.
Apparently it doesnt suck CPU power but Im not sure if this is correct...

 

[robvas]

It depends on the card that you put in there. If you put a USB card in there it will use some CPU power to do the work, if you use a Firewire card it will not.