Worth it to upgrade from Dual to Quad?

I am currently on a AMD dual core 6000+ stock, no overclocking.
Would it be worth it to change to quad core AMD for FSX?
I was thinking to buy this one:
AMD Phenom Quad-Core 9950 CPU - Socket AM2+
Thanking helpers in advance
Would it be worth it to change to quad core AMD for FSX?
I was thinking to buy this one:
AMD Phenom Quad-Core 9950 CPU - Socket AM2+
Thanking helpers in advance