Amd 9850 vs 9950 be

I have two M2N68-VM motherboards (ASUS),they are totaly bitchen. Loud like goodness through two SX-650 Pioneer 70 watt stereos with 55 watt guitar speakers (5 Eminence). No other motherboard gets the volume, so loud it distorts, I don't like fancy new expensive home theater things. I have had a AMD 7750 dual core in my first build, but as I think I used two stick of Promos 667Mhz DDR2 and one of TopRam 1066, to break it in. I just got the second M2N68-VM from Alivio and did this memory config and it is running real loud, I am not even running any graphics card, just cable modem Cable One ,Boise. This is reminiscent of "Class "A" burn in for guitar amps, that in their set up process to made Hot for guitarists. After all, all circuits are a diode. Do you think this is true? eckert.richard@yahoo.com