Question How much watts do you need for the GTX 770?

A GTX770 will typically need both a 6 pin(75w) and an 8 pin(150w) power connector as well as some 75w for the pcie slot.
A highly overclocked version may need more.
Peak needs may be more than the nominal draw.
No matter, buy a psu sufficiently strong enough to handle what you have as well as a good sized jump in the future. Buy only a quality psu, one with at least a 7 year warranty.
 

Zerk2012

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Some websites are telling me that the GTX 770 takes up around 200 w and some are telling me 600 w so first does anyone know how much power it actually needs, and second how much wattage would my power supply need to work with it?

GTX 770 (no one who is selling it actually says how much power it needs only other websites do)
https://www.amazon.co.uk/GeForce-DirectCU-Graphics-Express-Display/dp/B00D3F7CFK
About 230 Watts.
https://www.techpowerup.com/gpu-specs/geforce-gtx-770.c1856