Yet another 1866MHz with FX 8350 & 990FXA UDR

Damian Ferrai · Jun 12, 2014

My specs:

AMD Vishera FX 8350
Gigabyte Ga-990fxa-ud3 rev 4.0
Ddr3 Gskill 2x8gb Kit 1866mhz Sniper 16gb (F3-1866C9D-16GSR)
650W psu

I've been trying to run those memories at full speed 1866MHz but I couldn't. I read most of the messages in this and other boards, and tried most of the solutions:

* Using XMP doesn't work (bios warns me it's not working and suggests me I change the settings)
* Using XMP + upping .1v or .2v to memory doesn't work either. I tried many different approaches but this always produces the same: the first time the bios doesn't even post, and I have to power the PC off manually. Then it posts (twice) and the default settings are used to start windows.

Here's the CPU-Z screenshot: http://tinypic.com/view.php?pic=2j280mg&s=8

Any help? Is it the FXs that don't support 1866? Or is it my PSU that maybe doesn't output the volts I'm asking?

Thanks in advance!

damric · Jun 12, 2014

What PSU model is it?

Damian Ferrai · Jun 12, 2014

The PSU is CoolerMaster RP650

damric · Jun 12, 2014

Sorry I should have already asked. How old is the PSU?

Tradesman1 · Jun 12, 2014

Don't think I'd worry too much about the PSU, try manually at 1866, 9-10-9-28, 1.55, verify the Command rate/timing is at 2N or 2T, and then raise the CPU/NB voltage to 1.24

damric · Jun 12, 2014

heh I know the PSU isn't making a difference but he opened up the can of worms when he mentioned it

Tradesman1 · Jun 12, 2014

Yep, but there's more than enough there, and the PSU seldom affects the DRAM if it were here, it wouldn't run at the lower freq either, I'm of course guessing from what little we have to work with, but am guessing that the 8350 Damien has has a weak MC (memory controller), comparatively speaking, have run into a few 8350s that really struggled to run 1866 and GB mobos don't always regulate voltages that well -

Another thought is to ensure you have the latest BIOS

damric · Jun 12, 2014

Tradesman1 :

Try this and if it still no luck, work your way up to 1.65v RAM voltage (1.7v is even within tolerance) and 1.4v CPU-NB.

spooky2th · Jun 12, 2014

CPUZ says the sticks are in single channel???

damric · Jun 12, 2014

CPU-Z also has some crazy low timings, lol.

Damian Ferrai · Jun 13, 2014

damric :

Hi! I tried DRAM 1.65v and NB 1.4v just like you said but it doesn't even boot. I got to access the bios and set it back to auto (1333Mhz) but it still doesn't boot.

I still have to try out resetting the bios, but will not get to do that until tomorrow.

spooky2th · Jun 13, 2014

Are your sticks in the right slots? There should be an empty slot between the sticks if using only two sticks.

Damian Ferrai · Jun 14, 2014

Thanks spooky2th! You saved my life, I'm embarrassed I misread the manual and forgot there should be an empty slot between the sticks.

I put one in DIMM_1 and the other on DIMM_2, enabled XMP, and now they're working fine at 1866 and dual channel.

spooky2th · Jun 14, 2014

Nice going...

spooky2th · Jun 14, 2014

What OS do you have? Ultimate or Pro or home premium?

Damian Ferrai · Jun 14, 2014

spooky2th :

Windows 8.1 Pro. Why?

spooky2th · Jun 14, 2014

Just wondering because there is a memory limit with home premium and lesser OS's.

Damian Ferrai · Jun 15, 2014

Hey it's now taking a looong time to post. Between 2-3 minutes. Is this normal?

Damian Ferrai · Jun 15, 2014

And sometimes it doesn't even post. No sound no nothing.

spooky2th · Jun 15, 2014

In BIOS, turn off quick boot and make sure your boot drive is selected as first. And if there is a floppy option, remove or disable it.

Damian Ferrai · Jun 15, 2014

Hey guys, now it won't even post

Did I burn the motherboard?

I tried removing the memories, and then it beeps. Tried removing the PCIe graphics card, and then it beeps. But whenever I have it all connected, it doesn't post and it doesn't make a sound. Sometimes the CPU fan won't start, but most of the times it will. I also tried clearing the CMOS. Any help? Thanks!

BTW: should I create a new thread?

Damian Ferrai · Jun 15, 2014

I tested the PSU following this guide: http://pcsupport.about.com/od/toolsofthetrade/ht/power-supply-test-multimeter.htm (tested the 24 pin connector, the 4 pin connector, and the 6 pin connectors)

Everything is in normal range. Still won't post/boot.

logang · Jun 15, 2014

Try clearing CMOS

Damian Ferrai · Jun 15, 2014

logang :

Hi logang! Thanks but I tried that already. Any other ideas? Is it possible that upping the voltage to DRAM 1.55V and NB 1.40V burned it? I don't see any leaking capacitor.

logang · Jun 15, 2014

That shouldn't have hurt anything. Did you remove the battery? Try removing the battery, putting the jumper in the clear cmos position and leaving it that way for a bit.

Yet another 1866MHz with FX 8350 & 990FXA UDR

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