Price is high and puts out a lot of heat but works well for its age.
6 September 2012
Summary: Bottom line: Pricey for what it is but works well for its age. Word of warning, this is a HOT running CPU. At 125 watts be ready with a water or large air cooling system. Overall its a good CPU for its age. Scores a 6.3 in WEI, and plays BF3 on med settings AA @ 4x @ 40FPS. (I have it mated to a 9800GT.) Its an old system but solid. The price is a little high for what it is but if all you want to do is upgrade your CPU than this is the best route to take.
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 of what I've done with the chip: -Play Deus Ex, Sacred Gold, Portals, Half-Life, Bioshock, and Minecraft w/o any noticeable lag. -Moved 750GB worth of video and pics over to a 2TB external HDD in just under 8hrs.
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: Causes stability issues, freezing about 5 times in a 2 day period and then works great for a month. cant figure that out, but other than that this thing rocks! improved frame rates by a consistant 300%. Everest says i run a cool 30-35C at all times. High airflow case helps that... I do not overclock.