I have an original IBM XT sat in the loft gathering dust, and I had this thought of OVERCLOCKING it . I am not sure waht speed it is currently running at, or where I might be able to change the clock settings on it. So, any info appreciated. Firstly... this is an old machine, and while working (last time I checked) I don't care if I fry it by reaching 3.0GHz I have a spare heatsink from my new P4 3.066 Prescott (the Intel stock cooler as it happens, as I am using the Tt SubZero4G). I think that and/ore the spare fridge freezer I have downstairs will be more than enough to do anything with it. lastly, once I have managed to successfully OC it, what software can I use to benchmarki it? it only has a 5MB HDD and a 360K (might be 1.2MB, but I don't thinks so) 5 1/4 floppy. I am upgrading my dads machine soon, and he wants a 5 1/4 built in to it, so installing software should not be a problem. Any ideas guys? I have a soldering iron and I am not afraid to use it.