Yeah, I hate seeing my parts depreciate.
Your gts is still good. Wait until gf2 pros or ultras get cheaper($200).
I know 15 fans sounds crazy. I counted all the fans in my sys and I have 2 3fan HD coolers.
You need at least a lower faceplate inlet fan and make sure your ps fan is blowing out. DON'T oc w/out fans!!
Once you get your sys max'd it'll get hotter.
Here's my secret site where I found my MB combo.
http://www.athlonoc.com/ochowto9.htm
Read the article and you'll be an oc'n pro.
Link to oc shop and check out their memory.
Your mem is the same speed as mine. It's cas3 at 133mhz, it's cas2 only at 100. Is it a hi quality brand?(micron,infin,...)
The invalid disk means the settings I gave you were too hi. You need to reset approx 4x to be able to get back to cmos.
Did you set volts to 1.85? Is your 1.2 a 133 or 100fsb.
My 600 is 100 & will go to 112.
If your 1.2 is 100fsb try this: h+pci, 105/35, +5, x12.5.
This gives you dram=140, fsb=110, cpu=1375.
If it's 133 try this: dram clk=hclk, 140/35, +0, x10.
This gives you dram=140, fsb=140, cpu=1400.
These are lower #'s so you should be able to go higher if you mem is good, but you will see a bump in bench marks.
Your cpu fsb is already way above 66. It must be independant.
Study your Abit bible.