I've seen several people getting scores above 600 in stock specs, and around 660-680 with PBO (Power-On Overclock). I've tested several PBO configurations that I won't be able to list here; the best I got was 610 with PBO.
My computer was recently formatted, and the first thing I did was run CPU-Z on the 5700x, which gave me a score of 606, but after that it never came close to 600 again. Is my processor bad? I don't know what to do; I know something is wrong because, according to the standard, it should give more than 600 in single-core stock specs.
I won't show PBO results; I didn't see significant gains in single-core performance, as PBO only increased in multi-core (the best it reached was 6900). I haven't tried it with Ryzen Master yet, but I don't think it would be very healthy for the CPU.
I use an ASUS TUF b550m motherboard.