Will a System with a CPU, not on CPU Manufacturer Support List, work?

Basicly if its not on the supported cpu list it wont work

as long as it's the same type and generation i have never had a problem running anything on anything. I never look at cpu or memory lists, i just check the specs if it matches i go. No probs in many years, but i have heard of people having probs.

imho i think a lot of the probs are operator error

your good to go bud, my T platform 8100 C2D can be upgraded to the P platform 9xxx series, although initiallly that series had not been listed as compatible... because it wasnt out yet. It is the same socket, and fsb... are compatible. many times these lists are not kept updated... memory lists are more than cpu lists, because of the CPU being more dynamic in production than memory

AMD Athlon 5600 Brisbane 2.9GHz - http://www.newegg.com/Product/Product.aspx?Item=N82E168...

65nm CPU with a TDP of 65W. If you do plan to run a CPU like the 4850e or the 5050e it might run on the motherboard but some of its feature might be crippled.

I'll probably go with the AMD AM2 CPU made with the Brisbane core since the list has them listed on earlier models.

The AMD Athlon 5600 Brisbane 2.9GHz sounds like the best.

Good luck with your upgrade, and hope it works