I've bought ASUS TUF GAMING Z490-PLUS(WIFI) with G.SKILL Trident Z RGB (32GBX2) DDR4-4000. I inserted both RAMs in DDR4_DIMM_A2 and DDR4_DIMM_B2 but it hanged my PC repetitively( in Bios I see DRAM bus was set to Auto and the motherboard set it 3600 in Auto mode).
Now, I've inserted both RAMs in DDR4_DIMM_A1 and DDR4_DIMM_B1 and everything works fine. However, In this mode DRAM frequency more than 2666Mhz makes my motherboard unstable(it shows me the instability in POST screen). when I set my DRAM frequency to 3600 or 4000 it shows me instability message and in bios mode I see it changed my DRAM to 2666Mhz to become stable.
I wonder why this mother board with this specification
4 x DIMM, Max. 128GB, DDR4 4800(O.C.)/4600(O.C)/4500(O.C)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3333(O.C.)/3200(O.C.)/3000(O.C.)/2933(O.C.)/2800(O.C.)/2666/2400/2133 MHz Non-ECC, Un-buffered Memory Dual Channel Memory Architecture
works in this manner.
I will be grateful if you could help me to increase my DRAM frequency and make my PC stable.