Overclocking AMD Athlon 64 X2 Dual Core 4400+ Processor Brisbane 65 nm - CPUs - Overclocking
I had the AMD X2 4200+, the same speed chip as the 4400+ but with a smaller L2 cache. Since these chips have a locked multiplier, you have to increase the front side bus speed to overclock the chip. I had poor luck with that due to my cheap memory sticks....