G.Skill Ripjaws 2x8GB 1866 RAM limited to 1600 on M5A99X Evo R2.0?

Wolfesscythe · Feb 27, 2014

I'm running an AMD FX 8350 on a M5A99X Evo R2.0, with 2x8GB G.Skill RIpjaws 1866 RAM. When Overclocking the ram to 1866, the PC will not boot, period. At 1600 and 1333, the system operates fine. I suppose the MOBO has a failsafe that after a failed boot or two, it removes the overclocking selections in the AI Tweaker? I'm very new to overclocking, and I've only recently messed around with it. I didn't know that I would have to overclock the RAM myself, even.

Is there a particular compatibility issue I'm not seeing?

ahnilated · Feb 27, 2014

Maybe your ram won't run at those speeds on that motherboard. The motherboard specs do say that it can run at 1866 MHz memory speeds. It will take some testing to find out what settings you need in the motherboard to get 1866 MHz stable.

expl0itfinder · Feb 27, 2014

Here is a brilliant thread regarding general overclocking settings for many FX CPUs:

http://www.overclock.net/t/1348623/amd-bulldozer-and-piledriver-overclocking-guide-asus-motherboard

It might help you out.

expl0itfinder · Feb 27, 2014

ahnilated :

I use the exact same RAM on the exact same motherboard, except it runs a 2133MHz. The speed shouldn't be an issue.

Tradesman1 · Feb 27, 2014

Your 8350 prob has a slightly weaker MC (memory controller) than the norm, try setting the sticks to spec timings manually, thenn set the DRAM voltage up + 0.05 from spec (i.e. if the sticks are 1.5 set DRAM voltage to 1.55) and raise the CPU/NB voltage to 1.22

gskill support · Feb 28, 2014

In addition to the basic memory settings, boost CPU-NB Voltage +0.1V and that will help the CPU stabilize DDR3-1866. Let us know how it goes.

Thank you
GSKILL SUPPORT

expl0itfinder · Feb 28, 2014

gskill support :

Awesome to see some actual representatives coming out to the forums. That sends a pretty good message.

Wolfesscythe · Feb 28, 2014

gskill support :

I did as you said, and it still failed to load.

Tradesman1 · Feb 28, 2014

What are DRAM and CPU/NB voltages currently at? Have seen some have to take the CPU/NB up to 1.4

Wolfesscythe · Feb 28, 2014

Tradesman1 :

Here's the default settings for what I've currently got set, which is ram at 1600, and CPU at 4.4Ghz, using the auto clock options.

Tradesman1 · Feb 28, 2014

What are the voltages at? Default doesn't tell me anything, your mobo may have the CPU/NB at 1.11 andother mobo may be at 1.18 depending on what all is with the rig

Wolfesscythe · Feb 28, 2014

Tradesman1 :

Apparently the picture I posted didn't go through.

http://s1128.photobucket.com/user/RajjWoW/media/140228205110.png.html?sort=3&o=0

Tradesman1 · Feb 28, 2014

Try DRAM voltage at 1.55 and NB voltage at 1.22

Wolfesscythe · Feb 28, 2014

Tradesman1 :

No cigar. Still failed to boot.

Tradesman1 · Feb 28, 2014

May want to bench it, have a guide that might help here:

http://www.tomshardware.com/faq/id-1753671/bench-troubleshooting.html

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G.Skill Ripjaws 2x8GB 1866 RAM limited to 1600 on M5A99X Evo R2.0?

Wolfesscythe

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gskill support

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Wolfesscythe

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Wolfesscythe

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Wolfesscythe

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Wolfesscythe

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