Summary: This may be an old processor but for what I'm using it for it Frickin kicks@$&! I throw multiple streams of HD Video at it and it just keeps on humming along! Not sure how it works for gaming but it has overclocking settings that could really push the speed.
Summary: By the time I bought this chip 4 years ago it was already being replaced as the king on the block by quad and hex core chips. I got this for my msi k9a2 platinum and it runs pretty fast from what I can tell.
Summary: I built myself a video editing PC and originally used a Athlon 64 X2 5000+. I found myself wishing it was faster as I watched it render video. I found this processor online and replaced my 5000+ with this 6400+. It boosted through-put on the rendering process and made life bearable again.
Summary: WEll i been playing and using this baby for work...and its great ! i payed 150$ for it, in 2008 december, and its working like a charm ! with a zalman cooler :D on ASUS MSNLI Premium board...at the end im happy !
Summary: I can't believe how much faster my computer runs with this processor! I had an AMD Athlon 64X2 4200+ before, and this one blows that one away. This processor does require a really good aftermarket heatsink fan though because it runs really hot.
Athlon 64X2 6400+ Black Edition (Purchased on May112008)
Xiaochun Chen, Amazon
17 June 2008
Summary: The seller did great job for shipping on time, excellent service to follow up with customer when we had to return the product due to different requiremnt, also processed refund prompt. If there is opportunity I like to do business with them again. Thanks a lot !!!