Given your situation of stability, I would stay stick with what you have for now. While you will see better performance on 760 based motherboards, some are better (and more stable) than others.
My basic reasoning behind recommending that you DON'T change is split 50/50 between loving the 760 chipset, but loving the 762 even more.
If performance is what you are after, I would say wait for the prices of the dual processor boards to come down this fall. The mindset being that the new systems will all have 4-DIMM slots as well as support for all version of DDR RAM including Unbuffered, Buffered, ECC, Registered and Registered-ECC. Quite frankly, we are not impressed with the 2% increase over PC133 that the KT266 is generally giving. Our opinion is that the drivers are just not mature enough to offer any kind of REAL, measurable performance increase.
Finally, in reference to the new 762 chipsets, the benefits of the new AMD CPU's (with the extra pin) will be revealed once more models are out the prices come down (presently the MP CPU's are pretty darn expensive). Our tests show much better system resource numbers and the Linux performance is incredible. The 4-DIMMs also mean alot in that you will be able to add more memory at a cheaper price.
If price/performance is what you are looking at, here's where you would stand.
1) Existing - $0.00 0% Increase
2) Upgrade to A7M266 - $150.00 5% Increase
3) Upgrade to K7Master - $160.00 9% Increase
4) Upgrade to DUAL CPU 762 Based - $250.00 + New CPUs 15+% Increase
(Note: While Tbirds will work in some of the 762's, MPs are recommended for stability and improved performance)
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