AB350 Pro 4 - Ram Voltage

datonyb wrote: have you tried selecting XMP and then turning just the 3000 down to 2666 and test to see if it boots? are your ram sticks in slots a2 and b2 ? have you tried increasing the SOC voltage to 1.1 volt ?

gabrimor wrote: But, there's something I can't understand. DRAM voltage, at auto, runs with 1.21v. When I try to set at the rated voltage, 1.35v, mobo won't post. Same thing happens with any voltage higher than 1.23v. When I use, one bank, instead of two banks, I can increase the voltage to 1.35v. Is it normal? For me, this low voltage is making my system crash, sometimes.....

have you tried as i suggested
click xmp
and then click 2666 manually

it should load the xmp settings for timing and volts but keep them when you select 2666

then test it to see if its stable

you also say with one stick it does 1.35


does it do this with both sticks tested alone ?
if one will and one wont then thats the problem a dodgy ram stick


Edited by datonyb - 07 Sep 2017 at 3:06am

Corsair RAM truly is horrible, often made with ICs that just barely scrap over the line for what they are rated for. So much as changing a memory timing from default down one notch can cause a no POST or BSODs, really awful stuff, which is why I will never recommend it to anyone or review it. Just a FYI for you in the future, basically buy any RAM that isn't Corsair.

Regards your specific problem, it is very unusual. If you haven't done so already;

1. Updated the UEFI to the latest version, power down, remove power cord and CMOS battery, press power button 2-3 times to discharge capacitors.

2. Test each DIMM module in each DIMM bank individually @ 1.35v

3. Swap DIMM banks, if they are in A2+B2, swap them to A1+B1. If I remember correctly thats the config needed on Asrock boards to run memory in dual channel mode. This will at least eliminate the possibility of your sticks being dual rank instead of single rank, although its highly unlikely that 8GB kit is anything but single rank.

4. Try setting the primary timings manually to 15-17-17-35

If that doesn't work and you are able to, send the memory kit back and get literally any other memory kit. It does seem like it is the memory kit that is the problem here I have never, ever, had a board refuse to POST because of the memory voltage I set although I have had memory kits on rare occasions refuse to work with voltage I set.