The Pentium D main issue is that it doesn't support HT, most of it's execution pipelines idles most of the time, specially in games. In recent reviews, even a Pentium Dual Core E2160 at stock can bottleneck in many gaming scenarios a HD 4870, and is a CPU which is considerably faster than any Pentium D. If you can get it for less than 60 bucks, isn't a bad idea, but bear in mind that for a little more than $70 you can get a decent dual core CPU from Intel or AMD which is much faster. Pentium D is a joke back then, and is a joke today. My old single core Pentium M at 2.70GHz smoked alive a gaming setup using the same video card with a Pentium D at 3.20GHz in all games, multi threaded and not multi threaded.