I am building a 990fx with a fx-8120.
I had hyper x memory that ran fine without oc.
I did the auto oc and got 3.8 1666.
Some cores would fail when running prime.
Now I am trying corsair vengence.
With no oc it runs fine.
The auto oc fails and hangs on VGA_LED.
Have tried 2 video cards both slots
the sabertooth and a 990x evo.
Manual oc works for a while but then
POST error on VGA_LED after reboot.
5 hours prime at 3.8 1666 no errors
but then it won't reboot. VGA_LED.
Working on 3.7-3.8 tring 1646 and 1628
but both have failed to reboot after running prime.
I am new to AMD and not sure what I am missing?
Is it a bios setting or is this memory bad?
Have oced 2 other asus with intel cpus and no trouble
and have oced evga x58 with no problems also.