Tried to experiment with OC on my old computer for old games with GeForce GT 220. I keep getting notifications about the test failed each time so I tried to see what can be done.
I moved the sliders a bit on the 2D clock part, I increased them a bit, mostly the memory clock, by default it's at 135, so I moved it to about 400 and got artifacts, then screen went mostly black, something beeped once in the computer so I powered it off and restarted it after a minute and put all the sliders back to default, so far everything seems normal, I just reinstalled the GPU nvidia driver just in case. I didn't try to increase the 3D clocks yet.
I don't know if those sliders increase the voltage or just the frequency. Do you think anything like the GPU could have been damaged, how can I verify it? Also, does anyone know what does the box "Link clocks" mean?