Crossfire CPU or GPU eater?

Hey guys, I was just wondering is Crossfire a CPU lover or a GPU lover?

Since im getting a 20fps average on low setting (rubbish) on my new netbook compared to my old PC which gets 50fps+...

Netbook specs 11.6:
Intel Celeron 743 @ 1.3ghz
Intel 4500MHD 1372
- 128 Dedicated (Modded)
- 1244 Shared Memory
3GB DDR2 RAM
Window 7 HP 64bits

Im not gonna be playing modern games with this netbook since I already have a custom computer. But just wanted some old, not too intensive graphic games like Crossfire would run well.

So whats the problem?

(P.S Intel 4500MHD isn't THAT CRAP (for a netbook), it can run most upto date games with a better CPU)

Thanks Philo