The Dual Core AMD Athlon 64 X2 4400+ Socket 939 processor enables dual core desktop computing and features two processor cores each operating at 2.2GHz with a 1MB (2MB in total) L2 Cache. It can perform calculations on two streams of data to increase efficiency and speed while running multiple programs and the new generation of multi-threaded software. What this means to you is simple: more programs running faster, all at the same time! Whether gaming or video, or in a server application, this stable and powerful processor provides a new level of efficiency and response.
This talented processor is integrated with a high-bandwidth, low-latency memory controller enabling support for up to DDR400 memory; the processors on the chip are able to communicate directly via the system request bus, preventing bottlenecks and slowdowns. Other features, including support for 3DNow! Professional technology and SSE3 accelerate multimedia applications and enable stellar performance when working with audio, video and photography software. This is a solid performer ready to accelerate your computer to new heights!
AMD64 Dual-core TechnologyAMD64 is designed to enable simultaneous 32- and 64-bit computing with no degradation in performance. With dual-core technology there are two complete processor cores in one physical package running at the same frequency to deliver TRUE multi-tasking power, allowing users to switch from one program to another without pausing for the computer to catch up and reducing annoying processing pauses.
HyperTransport TechnologyHyperTransport Technology (HT or HTT) is a high-speed, low latency, point-to-point link designed to increase communication speeds between integrated circuits in computers, servers, embedded systems, and networking and telecommunications equipment. The Athlon 64 X2 4400+ Socket 939 processor is equipped with HT technology to enable a system bus speed of up to 2000MHz, delivering a maximum of 8GB/s I/O bandwidth and 14.4GB/s processor-to-system bandwidth.
CNQ: Cool'n'Quiet TechnologyAMD's Cool'n'Quiet technology is an innovative solution available on AMD Athlon 64 processor-based systems that can effectively lower the power consumption and enable a quieter-running system while delivering performance-on-demand.
Enhanced Virus ProtectionAll AMD processors equipped with AMD64 technology are Enhanced Virus Protection-enabled. Enhanced virus protection acts as a preventative measure causing the virus to be localized, short-lived, and non-contagious, eventually being flushed from system memory.
Pros: This Processor can and will take anything you throw at it. If you're someone who likes to multitask and do several things at once, buy this processor! I've been able to defrag 2 hard drives(not recommended while doing other things), burn a dvd, encode an MP3 and play Quake 4 at the same time without any kind of slow down.
Cons: Price, although I think it's the best bang for your buck.
Overall Review: You may see issues with older applications not behaving correctly. I encountered a problem within Half Life 1 and its mods(Counterstrike, DOD) where every few seconds I would stutter and the more USB devices I had plugged in, the worse it go. After 3 days of pulling my hair out, I come to find out that the application couldn't handle the dual core. You can define the amount of use with a given application by going into Task Manager(CTRL-ALT-DEL) > Processes Tab > Right Click Executable for Process > Choose set Affinity and then you can choose which processor to use. If this is an application you use frequently, I'd recommend downloading Powerstrip 3.61. You can setup a profile in there so that everytime a certain application is launched, it only runs it on the first CPU. Hope this little bit of info helps some poor soul from the agony I went through.