2020 27'' iMac: 8-core vs 10-core for Resolve?

If it was me then I would probably ask in their forums where you would get replied from people who all use the app in question

https://forum.blackmagicdesign.com/viewforum.php?f=21

here the % of users who knows the said program may be tiny compared to their forums

tycooko wrote:

Especially: would that difference justify 505 euros (596,64 dollars) more?

Seemed like that was "especially" what you were asking. I guess you meant for anyone. In which case, I would recommend you get the most tricked out iMac you can afford. Personally I would use my iMac Pro for Resolve.

I had the same question except I use FCPX as opposed to Davinci Resolve. The 10 core is not worth it in my opinion but it also depends on how you use Resolve. I did purchase both models (2020 5k imacs, one with 10 core one with 8core) both with the 5700xt configuration. Rendering times and different benchmark applications did not make a difference. I did notice that the 10 core seemed to handle playback of 4k projects with a lot of effects, but it wasn't quantifiable. As in, the amount was small enough to where it "felt" better with the 10 core. 4k Raw footage and pro codecs seemed slightly smoother on the 10 core. So if you use a lots and lots of of 4k/8k raw, codecs, heavy effects, 10 core may be, just maybe worth it.

From what I understand, in Resolve, the 10 core might even make less of a difference due to the Resolves reliance on the GPU vs FCPX

Good luck.

FWIW, all else being equal the 10-core i9 will be some small percentage faster. No one can decide if that small difference is worth $600 more to you.

Didn't mean to forget about you. If the core's frequency was the only factor, then my 4.0 GHz Quad-Core iMac should be faster than my 3.2 GHz 8-Core iMac Pro. It's not.