How do I increase my speed?

[Jordan102197]

(04-21-2012, 06:11 AM)Starscream Wrote: This game is very demanding, your CPU is not good enough. There is nothing you can do other than buying something better. Try some other games instead.

Do you know the specs required? I have a gaming PC that I haven't had any lag on other games. But I've never used dolphin.
Operating System: Windows 7
Processor/CPU: AMD Phenom II X4 970 Processor
Video Card/GPU: AMD Radeon HD 6700 Series
Memory/RAM: 8.00 GB
Dolphin Revision Currently Using: 3.0-592 64-Bit