WHY DO I NEED A DECKLINK?

Hi everyone, can anyone tell me why I should buy a card?

I am a professional editor for a long time and a colorist for not too long.

The thing is, I need the card for full screen 3rd monitor, but what else?

What improvements will we get? real-time transcoding for better playback? Faster readings on files? seriously what is the real benefit to buying this card.

a friend of mine purchase one for live broadcast, but he does not want it anymore and he's willing to sell me for a good price, so if anyone helps me with this, I'll be REALLY greatfull

All what it does is full screen preview which is color accurate. Some may also let you have 2nd downscaled preview (or allow you to add 3D LUT). That's about it. Sounds not much, but in the same time it's a lot Almost all todays cards have no additional processing built in as this is done mainly in software now.

Andrew, tks for the help.

so the card, in my case, will just output a color accurete signal, it won't improve performance wise in any case, right?

my workflow i always do a proxy in cineform(no prores becouse i'm a windows user) for editing, then on c. grading i use the original footage, but it can get a little bit slopy.

i did hear that the card can improve realtime playback, becouse it have a processor for realtime transcoding, meaning, in some scenaries i don't need to proxy everything for editing/grading, but you know, i could be wrong.

Some of the cards can do some flavor of SD/HD/UHD scaling, but they don't accelerate playback.