Find a 2600+ (2400+ is second choice) tbred with a 266 FSB, and call it a day, the difference will be very noticeable. I just replaced my sisters 1600+ on that same board with a 2600+, and it flat out cooks. You will get even better results because of your VID card (she has a 9700NP). All that for less than 100 bucks.