Which of these CPUs should I use for my PC build?

[BJSforVols]

OK, I'm taking the plunge into building a PC. Although I have replaced most everything inside a PC before, this will be the first one I've built from scratch.

I'm not sure if I'm starting at the right spot or not, but I've started by trying to determine which CPU I want first. After that, I thought I'd find the motherboard I want that will work with the selected CPU.

Anyway, I've been looking around at CPUs and figured out enough to be dangerous. LOL It seems like I can get an AMD much cheaper than an Intel, but yet the preformance of the Intels seem to get much better reveiws. (IE. An AMD 6 core seems to be more comparable to an Intel quad 4 or even dual core is what I'm believing from my research. Is this correct?)

Based on this; which of these CPUs would you recommend?

1) AMD Phenom II X4 965 Black Edition Deneb 3.4GHz 4 x 512KB L2 Cache 6MB L3 Cache Socket AM3 125W Quad-Core Processor HDZ965FBGMBOX
2) Intel Core i5-660 Clarkdale 3.33GHz 4MB L3 Cache LGA 1156 73W Dual-Core Desktop Processor BX80616I5660
3) Intel Core i5-661 Clarkdale 3.33GHz 4MB L3 Cache LGA 1156 87W Dual-Core Desktop Processor BX80616I5661

I want a fast PC which will be good for multitasking, AutoCad, possibly streaming video to a HD output, and general PC for the home.

[Deneb]

The AMD Phenom II X4 965 Black Edition Deneb 3.4GHz is a good strong CPU but generally get what you pay for. The Lynnfield core I have listed below is quite a bit more powerful. If you take the BX number from the Newegg listing and do a search on it over at Intel you can get to the link below or if you scroll down you’ll see that this CPU has hyperthreading disabled. That makes it above 5% slower than the $300 version which is the 860.



AMD Phenom II X4 965 Black Edition Deneb 3.4GHz $159.99

http://www.newegg.com/Product/Product.aspx?Item=N82E16819103727&Tpk=AMD%20Phenom%20II%20X4%20965%20Black%20Edition %20Deneb%203.4GHz


Intel Core i5-760 Lynnfield 2.8GHz 8MB L3 Cache LGA 1156 95W Quad-Core Desktop Processor BX80605I5760 $204.99

http://www.newegg.com/Product/Product.aspx?Item=N82E16819115067



BX80605I5760

http://ark.intel.com/Product.aspx?id=48496&code=I5-760