Need urgent help regarding motherboard/processor compatibility

Hello all, I am in urgent need of purchasing a new processor, and I was going to go and buy one within the day.

My eye is on the "AMD Phenom II X4 940 Deneb 3.0GHz 4 x 512KB L2 Cache 6MB L3 Cache Socket AM2+ 125W Quad-Core Black Edition Processor " (http://www.newegg.com/Product/Product.aspx?Item=N82E16819103471) and my only concern is whether or not it will work on my current motherboard. My Dell is about 3 years old now, and I'm not sure if buying the processor will be a wast of money.

The motherboard is a Dell model 0M3918
intel i915P/915G chipset
it also has a PCI-express

I'm not sure where to find more data about the motherboard regarding any sockets it has sooo Theres not much more data I can include.

anyhelp would be extremely appreciated! thank you!

hmm alright, so then i would be looking for a higher end Intel processor...any suggestions? Im a fairly hardcore gamer

I'm pretty sure the intel 915G chipset wont support any of the quad core processors. I dont even think it will support a core 2 duo, although it "might" work with the e4500, e4600 allendale chips. you are limited to an 800MHz front side bus with that chip set. According to the Intel website, the only CPU's mentioned as associated with 915p/g are P4's

What speed ram do you have? And is it DDR2? Almost any of the dual core or better processors out there will be an upgrade from what you have

so are you saying even with my crappy motherboard its worth it to buy a processor thats compatible with my current board? Cause I was thinking i could buy a cheap intel board that will be compatible with a high end processor