I got out an old PC from broom closet.It has Gigabyte 965P mainboard,\nCore 2 2666 and DDR2 667 RAM.\nNow it is amazingly slow. I have a home-theatre PC also with 965\nchipset, but only an 1866 MHz CPU and\nthat goes about 10 times as fast.\nEverthing seems slow, from disk access to drawing graphics. Booting\nand shutting down takes aeons.\nIt has linux installed. I checked "top" command and there are no\nphantom processes using up all the CPU cycles.\nAnd there is free RAM, it is not using swap disk.\nI checked BIOS settings, and everything is optimum without\noverclocking. I know if you do something like\nturn off L2 cache, that is worth roughly 10% penalty not 10x.\nI ran memest program and it shows the bandwidth of the caches and RAM\nas being normal (compared to\nthe other 965 PC). But still it runs like a Trabant stuck in first\ngear.\nI have used about 100 PCs over the last 15 years, and have not seen a\nfault like this before.\nIt used to work OK a few years back, before taking a holiday in the\nbroom closet.\nSo I will scrap it, but I am really curious: what sort of fault can\nslow a PC like so?