and if opterons aren't benefitial in certain circumstances, why do they exist? I never said they weren't beneficial in certain circumstances. For thoroughput intensive tasks they are a near neccesity. I said this particuliar circumstance it probably wouldn't be worth it. Gamers really aren't going to see a huge difference between the 2 chips. Sure they can get a bigger E-penis with a few hundred more marks in a synthetic bench, but real world gaming won't take advantage of this margin. Geeks like you and I need to realize that the average person doesn't need the penis extension we do. When one goes to buy a fast car they find a corvetteZ06 to be satisfactory for the money. Sure they could spend a lot more money and get something a little better, but hardly worth it when bang for buck comes in. This is why I mentioned budget earlier.
Also, understand that socket 940 opterons DO require registered memory, whilst socket 939 opterons do not. You have me here. I was under the impression opteron was still tied to 940 pin. My old school dual opteron setup is a 940 and I never thought AMD would release it under a non-server segment architecture. So if they are running 1xx opterons on 939 did they ditch the FX? If not, it is kind of redundant.