Do i need new PSU to new GPU ?

[jaskowski]

Hey, im thinking about changing GPU to Gigabyte GeForce GTX 1080 WindForce OC 8GB or Zotac GeForce GTX 1080 8GB GDDR5.

So... setup will be exactly this:

Asrock Z170 4K + i5 6600K @4500;
GPU mentioned above;
Xonar DGX, 2 SSD drives, 16GB RAM.

My present PSU - XFX Core 550W, is that enough or i need to change power supply with the GPU?
Another thing is CPU will not bottleneck this graphic card?

 

[parani]

PSU is enough and i5 6600k wont bottleneck the gtx 1080 . you're good