I actually have a Soyo MB, I meant an Intel P4 chip. My bad. But, I think I have a better understanding now. See if I have it correct:
I have a P4 2.0a which has a multiplier of 20 and a fsb of 100. Memory is PC2700 or DDR333. The CPU to DRAM ratios are actually 1:1, 3:4, and 3:5.
By the way, the PC2700 is called PC2700 because it has a max bandwidth of 2666 MB/s and has a frequency of 166 MHz times 2 (for dual data rate) or 333.
At 1:1 the CPU (or FSB) is equal to the dram frequency. The fsb setting of 100 times the multiplier of 20 equals 2000 or 2.00 gig. In theory, I should be able to increase the fsb to 165 which is a speed of 3.30 (165x20) and a frequency of 330 (the max for my memory)
At 3:4 the dram frequency is equal to 133% of the CPU speed. So, at 100 fsb, the CPU is still at 2.00, but the dram frequency is 267 (20x100x1.33) divided by 10 for frequency. Again, in theory, I should be able to set the fsb to 125 for a speed of 2.50 and at a freq of 333. Calculations: (125x20)=2.50 and (125x20x1.33)/10 = 333.
At 3:5 the dram freq is equal to 167% of the CPU. So, at 100 fsb, the CPU is again, still at 2.00, but the dram freq is 333. This would be my max setting.
I have an Excel spreadsheet that is set up for the different ratios that I could attach to a note, if anyone is interested. It will have to be after Thanksgiving holiday. As I said above, the max speeds are theoretical. In actual practice, I was only able to get up to 130 fsb at 1:1 which is 2.60 and DDR260. I guess there are other things that can have an effect, such as the processor not being able to go beyond a certain point. Comments?????