Found a GTS450 near a garbage bin, planning on overclocking.

Mario1 here with a new(ish) graphics card.
Somebody decided it's time for an upgrade and probably said to himself "hey, why don't I place my old graphics card near the recycle bin?".. gotta love rich people.. (rich by my low standards)
The card seems to be working fine, managed to pass a 2-hour FurMark stress test, played some LoL on it - everything works great.
It's a Palit GTS450 1GB(DDR3) - http://www.palit.biz/palit/vgapro.php?id=1657 .
So here's the question; how overclockable(?) is this thing? Has anyone here dealt with a GTS450 and can you give me some peak ref. clocks I should aim for?
Any help would be much appreciated!
Validation: http://www.techpowerup.com/gpuz/w3b34/

I wouldn't expect too much of a performance boost however to play around / learn some things try raising the core clock until your driver crashes, you get artifacts, pc freezes or you encounter a BSOD (In my experience that's the order of appearance, never got beyond a PC freeze though).
When you hit your max stable core clock. Start raising your memory clock until unstable. That should be your final settings.
You can also raise the voltage when getting unstable (if it is possible with the GTS450 though).
Use after burner or precision x. Watch your temps!

Good luck and have fun