My system is r7 1700,asus prime b350plus,hyperx 2133mhz 2x8gb,psu 450W superflower gold,sapphire 290 dual-x ,ssd kingston 240gb+seagate 500gb.Right now i undervolt this cpu from vid stoc 1.187V at offset -0.16V and no crash in 15 min realbench,20-30min. in aida stress.
Prime95 i dont think its good for ryzen and i dont want hours and hours to stress,if i have a crash i up a little volts and use pc normal.Today i want to see if in gta v is stable,i think this game stress average cpu.
LE:For r7 1700 and stock cooler this thread explain verry good what vcore to use,i know that not all cpu are the same,but are really close:
https://hardforum.com/threads/ryzen-7-1700-b350-overclocking-tidbits.1926296/