Unable to run my G SKill RAM at 1866Mhz

VarunB87 · Feb 22, 2015

Recently I bought my G Skill F3-149010S-8GBXL RAM. It was running fine till last night at 1866MHz speed. Basically I had copied the XMP Profile 2 timings, disabled Profile & manually fed all the timings. Today my computer did cold boot & reset back to 1333MHz. Now I am unable to run this at 1866MHz. Currently its running at XMP profile 1 which is 1600MHz. Has the RAM gone bad? It looks like that way but if anybody has any clue what might be the problem here..........

So far I have tried:

brispuss · Feb 22, 2015

Try clearing BIOS. Load BIOS defaults.

VarunB87 · Feb 22, 2015

I did clear CMOS & used failsafe defaults. The RAM just doesn't want to run at 1866Mhz with my CPU running at stock speeds or overclocked.

brispuss · Feb 22, 2015

Is the memory able to be tested in another computer (at 1866)?

If it works OK at 1866 in the other computer, then it suggests a motherboard/CPU issue. If the memory still doesn't work at 1866 in the other computer, then the memory may be failing.

VarunB87 · Feb 22, 2015

Unfortunately I don't have a spare computer or a friend nearby to check the RAM. I have ordered a replacement. Once I plug that in I will know what the trouble is.

Tradesman1 · Feb 22, 2015

You may need a slight OC of the CPU to run at 1866, no mobo or CPU listed so not positive

VarunB87 · Feb 23, 2015

Updated the signature finally. I couldn't find the Edit button on Chrome yesterday. My CPU is overclocked to 4.4GHz & motherboard is GA-Z68XP-UD4. Like I said it was working on 1866MHz for the past 10 days. Next morning when I turn on my PC it went into cold boot & reverted to 1333MHz. Now everytime it does that when I set the frequency manually to 1866MHz even when the CPU is overclocked or not. It runs absolutely fine on 1600MHz XMP Profile 1 without any sort of modification. I have tried everything I could think of in the Bios settings, searched on almost every similar thread on the internet & found no solution.

Tradesman1 · Feb 23, 2015

Could you post pics of CPU-Z from the memory and SPD tabs?

gskill support · Feb 23, 2015

Don't use XMP, manually input the DRAM Frequency, timings, and Voltage.

Also, you can check each module to see if it works at DDR3-1866.

VarunB87 · Feb 24, 2015

Tradesman1 :

Well I have unplugged the stick & am waiting for the replacement. The timings shown in CPU-Z are the same mentioned on the RAM's package: 10-11-10-30 & 2T.

gskill support :

I have been using manual timings since the day I plugged it in. I basically copied the XMP profile 2 timings, then disabled XMP profile & used the timings manually with 18.66 SPD multiplier set. It was running great till the 10th day. Now both manual as well as auto XMP profile timings don't work. Computer simply refuses to boot at 1866MHz. I even tried loosening the timings to 11-12-11-32, increasing the voltage to 1.6V then 1.65V, increased Vtt from 1.05 to 1.2V. Nothing works. The replacement would arrive in a day or two. I am disappointed with this GSKill RAM. Everybody told me to jump at this because the quality is great. My 4 year old Corsair RAMs rated at 1333MHz are still running smooth.

VarunB87 · Feb 25, 2015

Shit..I got the replacement & same thing happening. Damnit I have no idea where the problem is.

gskill support · Feb 25, 2015

So you only have one module, correct? If so, you can use XMP.

Do you have the latest BIOS?

Nothing else needs to be tweaked, the system should work fine with XMP enabled.

brispuss · Feb 25, 2015

Try re-flashing BIOS. Or, try updating BIOS if not already updated.

If the above doesn't resolve the issue, then the motherboard may be failing?

VarunB87 · Feb 26, 2015

Now its working. I have no idea what worked but I changed tRFC to 255 & rebooted. That worked. Slowly I brought it back to 244 default & its still running at 1866MHz.

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Unable to run my G SKill RAM at 1866Mhz

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