Summary: I purchased this a couple months ago used and after trying it on two motherboards I started to worry it was dead, then after some research I found out that most often the problem will not be the processor but either the memory or the motherboard. So after reading on the Intel support that not all memory and processors work together(800mhz processor 1333mhz memory might not work) I purchased an 800mhz memory stick and another board(the third).
Summary: I remember I bought this chip 4 years ago when I built my first computer! Wow time flies. I'm way more advanced now than I ever have been. I still have this in the computer I'm using now. It's been an amazing processor!
Summary: This is a good little cpu for the price. i have it in my living room's htpc and it does the job. its basically the old core 2 duo 6300, both ran at 1.8 had the same cache and so forth. it you are looking to put a good but inexpensive computer together this is not a bad one to get.
Summary: I think Intel should warn Windows XP users that even with new drivers, the dual-core is lost. If they're lucky (without overclocking a lot) Windows XP will read the processor as a single 1.9Ghz.