Question Ryzen 7 1700x 4.1ghz

Feb 8, 2019
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Corsair h100i push pull
Corsair lpx 3000mhz Ram 16gb
Gigabyte X470 ultra gaming
I currently have my r7 1700x at 4.0ghz at 1.398v (sometimes jumps to 1.406-1.416) what voltage would give me 4.1ghz as a daily oc? Assuming I even need to up vcore anymore. ( yes I am aware of lottery just asking for ballpark suggestions and experiences from veteran OCers.)