Dj-Chris, just to point out that the Memory bandwith advantage on going with dual channel is already accounted for. Why do you think a 3000+ 754 is 2.0 GHz while a 3000+ venice is 1.8? Not becuase of the 90nm process but because of dual channel. Yes you get a 50% boost in memory bandwith, but you only get 3-5% boost in real life performance. Also, the Newcastles can def overclock. On average people can at least get 200MHZ out of them. Most can get more, but lets stay on the low side of things. Finally, you blow the energy savings and heat dissipation out context. 130 nm processor do not require that much more energy than 90nm ones. You say ALOT more, but in reality it is only 10 or so more watts. That isn't alot more I would say. So to sum it up, what are the advantages of 939 over 754? Pci-express, which poses no advantage over AGP RIGHT NOW. Dual channel memory, which is already taken accounted for in the modeling numbers by AMD. And finally dual core. Those are the advantages comparing 754 to 939.
Finally DJ-Chris, he OP wanted credible links because it is his money. If you choose not to provide them, thats fine. Just that he'll beleive people who give links more than people who wont, because frankly websites are a little more credible than a poster in a forum.
Btw, here is a detailed look at the sempron. The model that was reviewed is based on the 130nm process, and the article goes into detail about 754 versus 939. Also, there is an overclock mixed in there too.
http://www.xbitlabs.com/articles/cpu/display/sempron-3100-oc.html
Finally DJ-Chris, he OP wanted credible links because it is his money. If you choose not to provide them, thats fine. Just that he'll beleive people who give links more than people who wont, because frankly websites are a little more credible than a poster in a forum.
Btw, here is a detailed look at the sempron. The model that was reviewed is based on the 130nm process, and the article goes into detail about 754 versus 939. Also, there is an overclock mixed in there too.
http://www.xbitlabs.com/articles/cpu/display/sempron-3100-oc.html