After replacing that damned dell 24'' monitor with an Acer AHJ17 Crt,i noticed that SLI was disabled "is that normal?", i tried enabling it, it worked fine as it used to be, but suddenly the screen tinted to violet, after disabling SLI, the screen returned to normal, i went back to the nvidia CP, enabled SLI, the screen shook a little, but everything seemed alright, i started some benchmarks to both cards to make sure that everything is intact, all benchmarks went successful and not a single artifact was found, in one of the benchmarks i heard a weird boilingwater-ish sound, no weird odors, i'm pretty sure that my capacitors are fine, might be a coil whine "i've heard it once before, exactly 5 months ago", performance wasn't affected, i'm only concerned about my lovely gtx 780s, i think the soundcard "which is 3mm away from the 780's fan" directed the airflow in such a way to emit the whistle-ish boiling sound, not sure really, i tried many times to recreate the whole thing, but to no avail.
Googled about the purple tint issue, some forums hint to bad cables and/or pins.

Removed the SLI bridge, tried it with three different SLI bridges, benchmarked each 780 with EVGA OC Scanner and Unigine Valley, nothing popped up, i physically inspected each card and the motherboard, everything is intact.
Thank you BrittonT "i guess i'm able to refer to you by that" for the advice.

It's an SLI bridge issue. Reseat it or try another one. I have seen the exact same issue before.