I am replacing my current card with a newly purchased RTX 3060, however my stock PSU is only rated at 460w. The requirements on-line say the 3060 requires a minimum of 550w. The main issues is I only have a 6 pin adapter and need an 8 for the new card. Obviously I need an upgraded PSU, the question is....which one?!
 
I was looking at the EVGA 550w and 600w units, is there one that will work better than the other? 
 
This system is not used for gaming, just video editing using Davinci, a lot of 4k and some 5.4k as well.
 
System is nothing 'incredible' but I am running RAID on it, not sure if that matters for available 'plugs' from the new PSU.
 
Any suggestions/directions would be greatly appreciated!

I have not tried as I do not have the card yet, still in shipment. That being said I read countless posts where people said the card would not even function running with the 6-pin, that it needed to 'sees the 8 before it would operate. I read they make 6 to 8 pin adapters but cautioned that could potentially cause damage to components should too much power be needed. I have replaced PSU's in prior computers along with processors etc so I am familiar with the working inside them. I just do not want damage the card or the rest of the system. 

Currently the system has:
Intel Core i7-8700 6 Core, 12MB Cache, 3.20GHz, 4.6Ghz Turbo 
Window 11
64 GB Ram
Raid 1 w SSD's

1.  make sure to buy the right FORM FACTOR PSU for specific computer(e.g.P5,GT, G5 and etc)
    (for example, "EVGA SuperNOVA 750 GA": GA is the FORM FACTOR model)
2.  might need to search on the web. or contact the rep.
3.  Either 550W or 600 can be available depending on the Form Factor.
     (might need to choose what is available for the model size)
4.  most likely, the most cable connectors are most likely included unless DIY modified type computer, 
     (the website should have the quantity and type of cables included: just click the "SPEC" button).
5.  if no problem with the startup, then other PSU works the same in the same work environment. 

UPDATE.....
My 3060 arrived today along with my new PSU (EVGA 100-GD-0600-V1)
 
I started to uninstall the old PSU when I realized the new PSU does not have a power supply end that I need. On the end of cable that links my SSD together is two wire cable that runs to my Raid controller. The new PSU also has 2 wire attachment at the end of the SSD cable, however that end is different and will not work with my set-up. What is the best way to handle this?
 
For now I tossed in the 6 to 8 pin adapter and it is working well. I do not game with the system, just use it for video editing was Davinci. What an amazing difference this 3060 is vs the 1060! I can play/edit 5.4k video without a single studder. With the 1060 on 4k if I tried any kind of noise reduction with playback it was all choppy. I can apply noise reduction plus other things with 5.4k video files and it is so smooth!
 
Now I just want to make sure I get the right PSU installed, any thoughts would be appreciated, thank you!
 
 

Yes, when I looked I can hook everything up without an issue except for the Raid controller as it is powered by a smaller version of the SATA connector, that the PSU does not have as an option. I will snap a photo later tonight to clarify. I'm not sure if they make an adapter for my needs as well.