INTEL PENTIUM D 945
PRICE PAID TODAY $1
This processor was released in 3rd quater of 2006.
This processor can be picked on ebay.com this days for about 10$ with shipping and all.
This processor being so old dont think you go pair it up with the latest processor this is a processor which can be treated as a backup PC or a time-being temporary Intel Processor rig.
It cannot be overclocked as generates a lot of heat and you may have fire all around.
To watch the actual gaming performance check out the below video: