I recently did what you are doing, but on a slightly cheaper scale. My specs where simply it had to run Counter Strike Source well and more importantly, it had to be very quiet.
I went with the opteron 165 over the 3800+
http://www.newegg.com/Product/Product.asp?...N82E16819103588
I am very happy with how quiet the stock fan on this is
Sound being an issue, I only got 1 video card, plus half-life 2 runs well with just 1.
http://www.newegg.com/product/product.asp?...N82E16814130015
If you read the reviews, a few people talk about how they improved the fan and it is pretty quiet, they were not wrong. The fan only kicks into higher gear when I am playing, and I have my headphones on at that time, so it does not matter.
I too choose the higher end memory
http://www.newegg.com/Product/Product.asp?...N82E16820227225
As of right now, I would say this computer with stock fans is quieter than my older P4-2.8, which had a fanless Zalman heat pipe on the video card and a $50 Zalman quiet cpu fan (I think the power supply fan was needing to be replaced, then it would have been better).
This new system is by far the most stable windows system I ever remember.
I went with the opteron 165 over the 3800+
http://www.newegg.com/Product/Product.asp?...N82E16819103588
I am very happy with how quiet the stock fan on this is
Sound being an issue, I only got 1 video card, plus half-life 2 runs well with just 1.
http://www.newegg.com/product/product.asp?...N82E16814130015
If you read the reviews, a few people talk about how they improved the fan and it is pretty quiet, they were not wrong. The fan only kicks into higher gear when I am playing, and I have my headphones on at that time, so it does not matter.
I too choose the higher end memory
http://www.newegg.com/Product/Product.asp?...N82E16820227225
As of right now, I would say this computer with stock fans is quieter than my older P4-2.8, which had a fanless Zalman heat pipe on the video card and a $50 Zalman quiet cpu fan (I think the power supply fan was needing to be replaced, then it would have been better).
This new system is by far the most stable windows system I ever remember.