My new 3600 (2018 batch number) is stable on 4.5 1.275v. But I couldn't make it stable on 4.6, even on 1.35v. I guess I can make it stable but I am too lazy to bother with all the settings for just 100mhz. I am more than happy with this new cpu, my old 3600 barely reached 4175 on 1.45v lol.
ASUS Crosshair VII Hero WiFi | Ryzen 5 3600 | Arctic Liquid Freezer II 240 | 2x8Gb Corsair Vengeance RGB Pro @3800Mhz CL16 | MSI GTX 1070Ti Gaming | Seasonic Focus Gold 850W
ASRock Z77 Extreme4 | i7 2600k @4.5GHZ | CoolerMaster 412S | 4x4Gb Corsair Vengeance 1600Mhz | Sapphire RX580 Nitro+ 8GB | Seasonic Bronze 750W