Facing random crashes because of 4 ram slots corrupted with Gigabyte 990FXA-UD5 and AMD

[Bhuvnesh 1]

Below mentioned is the hardware as well as software configuration of the computer.
AMD Bulldozer FX-8120
Gigabyte GA-990FXA-UD5
Enermax maxrevo 1350W

4x4GB G.skill Ripjaws F3-14900CL9Q-16GBXL rated 1866 9-10-9-28 @1.5V
4x4GB Corsair Vengeance CMZ8GX3M2A1866C9 rated 1866 9-10-9-27 @1.5V

BIOS at latest release: F6
All clocks at stock/auto - 3.1GHz CPU, 2200 NB, 2600 HT, 200MHz base clock
Turbo/CPB disabled
Memory channels set to UNGANGED

The system of mine is running with 1600Mhz. as I have set the clock speed on 1866Mhz but the system did not seems to boot at all. Let me know if you are having any idea why the above mentioned issue is happening. Any help to fix the matter of mine will be highly appreciated. Thanks a lot in advance.

[Ramona19]

An interesting thing which I have noticed over here is that swapping between memory the DRAM config menu Auto column seems to be quite intelligent, detecting. When there are 2 DIMMS are installed and when changing the DRAM multiplier. Then i have noticed that DIMMS at 1333MHz if the timings are set to AUTO which is ending up with 9-9-9-24.
They are not supposed to boot if it is set to 1333 at the profile 1 timings or rated with 9-10-9. All the profile1 timings are supposed to higher than that of the AUTO when it is set to 1333 leaving TFRC.

[Munishi3]

Well looking at the situation I am suggesting following thing which you can try.

• First of all you should disable the turbo and save and after that the reboot.
• After that you should backup into setup.
• Now Enable profile 1 from EOCP settings.
• After that you have to link HT link and Northbridge to Auto.
• The EOCP profile jacks with HT setting and you are supposed to get mix results.

[Gimbya]

You should try to change the DRAM multiplier to 8.0 and simply check the timing when you are supposed to enable the profile1. Make sure that command rate is 2T.
You have to also see that if it is required 1.5V, 1.65V.

[Cain]

I wanted to tell you that the specific speed of the RAM is dependent on the hardware QVL lists. I have tested the situation with the 3 different kind of the kits across 2 brands and 3 kind of the model ranges. There could be fault of the CPU memory controller. I wanted to tell you that all the kits are generating same kind of the results.

[Quasim]

Make sure that you have installed the latest version of the BIOS on the motherboard of yours. if you are not able to make the thing working for you than I recommend that you should contact the technical support team and get further assistance on this particular matter. they will understand the problem which you are getting and let you know about the possible solution which you can try to resolve the issue.