Vista - Overclocking 8500gt

guys my friend has 8500gt and its frequencies are clock 500mhz/667 mem /1ghz shader
and its avg temp is 50-55 c .when he overclocked it to 625 mhz/667mhz/1.2ghz
its temp is 62 c without any external cooler.is it ok to use it like that
will it damage the graphic card
he just want it for one year

No... that thing at a temp of 62c is ok.. whats the Load temps.. when he's been playing a demanding game for 2 hours +.. find that out.

The best cooler IMHO for the 8500GT is the Zalman VF700 It's cheap. like $19.99 and it's SILENT.. and it dropped my temps on my 8600GT by about 7c. so he'd be under 56c or so with that.. tell him to get it. His fan is probably going full speed at that clock.. so it's got to be loud. tell him this will be SILENT.

Here's a picture of mine with the Zalman VF700

thx dude
he just attached an external cabinet fan just below the gc now his ordinary temperature is 48 c and after overclocking its 55 c
thx for giving the idea
now he is using 635mhz /400mhz mem / 1.3ghz shader

since it is 55 c now will the gc work normally without any problems about an year
or
will there be n e problems because of overclocking

well it should be fine.. what is its default speed. ??

8500gt default speed is core 500mhz / 667 mhz memory /1024mhz shader

afert oc core 635 mhz/ 900 mhz memory /1.3ghz shader

that should be ok, as long as there is no freezing. or the games are struggling or having ghosting. if thats not happening then it's ok. He should be ok for a decent while. but overclocking is always a risk of things not lasting as long. So in the end it's up to the user.