Right, mate dont worry about your temps honestly!
these guys like to keep their stuff cold but 47*C really isnt that bad!! you've got a good heatsink and good contact with the core of the cpu, but any higher and it will go unstable, so dont go playing unreal tounament deathmatches just yet!!
You will wanna get som arctic silver 3 for you chip tho!! it helps a lot with the temperatures!
Next if youre serious about overclocking you'll wanna get a better heatsink and a load of case fans, cause airs a good thing!
Once you've got that you'll wanna try overclocking again.
Cause then you can start to find out what it is that making your system crash! remember theres a lot of things that could make it crash!
I've only been playing with my computers for a few months, but its proving to be VERY fun! something for me to f*uk about with when im not stoned! oops! should i say that? oh nevermind!
Anyway, what i wanna say, dont start pumping voltages untill you've got everything ready! you wanna keep those temps bellow 45*C at all times to be comfortable (i dont run my cpu at 45 tho, more like 52load, but that cause i have a very quiet pc!, if i switch on some more fans it'll be a lot cooler, but a lot noisier!
So just trust me you dont wanna fry your cpu! broke 2!!!! since i got my system set up!!!!!!! one 1900xp, and one 1600xp!!!! mainly due to my stupidity but still...
Enjoy messing about with your computer!!!
Willem.