I have a 1900 amd athlon cpu and a motherboard that can only take up to a 1.5gz or amd 1500 or 1600 cpu. The motherboard is a VIA made by Futurepower that is no longer making thoes boards so I can't update the bios to accept a higer than 1.5gz processor. It now has a duron 900 mz with pc 133 ram. But it can take an athlon and ddr ram. Can I put in a amd 1900 and run it as a 1500? If so can I just set the motherboard's jumper to 133 and jumper the clock speed to x 11? I need a quick response. Thanks.