I get fluctuation between about 40-60 fps.... Athlon 1.3GHz, 768 SDRAM, MSI GeForce 440MX (which I got for $90) 800x600 32bit color, with everything turned all the way up... SB Live! with hardware acc. turned on, at 44 khz. I don't know if this will help.... We do have the same speed processor... but mine is AMD, not Intel