Music computer upgrade

Sep 9, 2018
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Hello. I have a P6TSE motherboard, i7 920 @ 2.6gHz, 12GB of 1066 DDR3 RAM, 2 SSD 500gb drives. I run this system for studio music production.
I want to upgrade my motherboard to GIGABYTE Z370 HD3P (rev. 1.0) LGA 1151 (300 Series) Intel Z370, with an Intel Core i7-8700 Coffee Lake 6-Core 3.2 GHz (4.6 GHz Turbo) LGA 1151 (300 Series) 65W and 16gb of DDR4 3200 RAM. Besides the upgraded parts I listed, my SATA speeds will go from SATA I to SATA 3. Running Windows 7 Pro 64.
Long winded way to ask: what will my increase in performance be? As a percentage. 30%, 60%, 100%? I know you can't be exact and I won't hold anyone to the answers. Just a general idea before I shell out the money.
Thanks so much. I'm a musician, not a computer expert.