Sorry - not the same graphics - Ive used only a GT710 and that didnt need a bigger psu.
I did a write up for a Dell 7020 and the instructions are exactly the same except,
When installing;
Make sure you have the UEFI based driver for the NVMe on your boot USB (unibeast does)
When you format - you format both drives (using the same formatting instructions)
When you install OSX make sure you select the NVMe drive
When you install Clover make sure you select the SATA
It's not hard but you need to be able to understand and follow instructions and sometime that's not as easy as writing the instructions.
My intro to the way the files are laid out
This is a brief and incomplete guide to how most hackintosh builds are structured. It has been written by a novice to hackintoshing about some of the things he wish he knew before he started. It is important to note there are other ways of making a hackintosh where the following description...
www.tonymacx86.com
and this guide
A Complete Ten Step macOS Sierra Guide for the HP 6300 Pro/8300 Elite ___ 4 ___ z_ 8300 Elite Mini-Tower / 8300 Ultra Slim Desktop / 6300 and 8300 SFF / 6300 Pro Mini-Tower Installing macOS Mojave If you want to begin with a clean install of Mojave instead of Sierra or High Sierra you...
www.tonymacx86.com
Then only then take a look at snikis build for mojave. Which is what you should probably build from.
This type of card takes both types of drive, at the same time - NVMe and MSata - the NVMe works thru the the PCI connector as normal but the MSata drive only gets its power from the the PCI slot and is connected by normal sata cable to the motherboard, where it just looks like a sata drive that you can boot from(coz it is). This is close to my office setup, no spinning disks is nice. Not recommending these brands or sellers but the idea of what I might research if I was looking to do this now.
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Im not so new and may be almost half a step in front of craig.