EVGA X79 Dark i7-4930k + 2400 mhz RAM

KosmicKat · Oct 13, 2013

Does anyone have any experience running an i7-4930k with 2400 mhz RAM? I tried this twice with two EVGA Dark motherboards and have had to RMA both of them.

Pinhedd · Oct 13, 2013

KosmicKat :

I'm running a 3960x with 8 DIMMs of DDR3-2133. Enabling XMP alone is not sufficient and is unstable on my machine. I have to boost the memory controller and system agent voltage. I believe that I have them set at 1.2 and 1.1 volts respectively. I have the PLL voltage set at 1.9 volts but that's more for the CPU overclock than anything.

KosmicKat · Oct 13, 2013

Pinhedd :

Thank you... According to Intel its only compatible up to 1866 mhz:
http://ark.intel.com/products/77780/

Is it possible the i7-4930k just can't work with 2400 mhz?

Pinhedd · Oct 13, 2013

KosmicKat :

It's only tested and guaranteed to work up to DDR3-1866. That does not mean that it will not work at higher speeds, just that it's not guaranteed.

As mentioned above I'm running a 3960x which is specified against DDR3-1600 yet I'm running 8 DIMMs at DDR3-2133.

The farther out of spec it gets the more work needs to be done to keep it stable. 8 DIMMs of DDR3-2133 requires more tweaking than 4 DIMMs of the same. DDR3-2400 is harder to stabilize than DDR3-2133.

It's certainly possible that your CPU simply isn't capable of running memory at those speeds, but I find it unlikely. You just need to play with it a bit more.

Tradesman1 · Oct 13, 2013

Might want to try at 2133, the 4930K can handle 2400, up to about 32GB or so anyway, what DRAM do you have (the model #) is it 16, 32, or 64GB?

KosmicKat · Oct 13, 2013

Tradesman1 :

I have the 64GB, maybe its too much for that chip.

Tradesman1 · Oct 13, 2013

More likely the mobo, the Rampage Extreme is the only X79 I've worked with that could reliably run 64GB of 2400, may need to take the VCCSA (system agent voltage) up to 1.2 possibly 1.25 for 64/2400

Pinhedd · Oct 13, 2013

Tradesman1 :

Seconding this. The Rampage IV series, specifically the RIVE, is the only truly reliable X79 board that has consistently held up in reviews. EVGA actually lagged far behind, specifically in DRAM speeds. Supposedly they were working on a firmware update to address it but I'm not sure what ever became of it.

Tradesman1 · Oct 13, 2013

It's possible could try and set them up totally manually - it's generally the advanced timings that get tricky and to be honest would be tough as EVGA doesn't even have a lot of mobos to get an idea of how they approach things

KosmicKat · Oct 13, 2013

I think I am just going to get some 1866 mhz memory for now and stay with the EVGA X79 Dark... Thanks all.

Tradesman1 · Oct 13, 2013

Try sticks at 2133 or even down to 1866, no need to buy new, what set do you have? can adjust the timings down which is fairly simple

KosmicKat · Oct 13, 2013

I was using G.SKILL Ripjaws Z Series 64GB (8 x 8GB) 240-Pin DDR3 SDRAM DDR3 2400 (PC3 19200) Desktop Memory Model F3-2400C11Q2-64GZ
with an i7-4930k and EVGA Dark X79.

This caused 2 RMA's when I tried to run at 2400 mhz.

So now I have ordered CORSAIR Dominator Platinum 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 Desktop Memory Model CMD16GX3M4A1866C9
and will try this with my i7-4930k and EVGA X79 Dark.

Tradesman1 · Oct 13, 2013

Give them a try at 1866, 9-10-10-30, 2T, 1.65 (initially), CM voltage 1.2 and VCCSA 1.25 if stable then we can work back on the voltage

KosmicKat · Oct 13, 2013

Well.. The Motherboard will not post anymore and is stuck on code "19" when I try to boot.
I cannot clear CMOS or boot in any way.

I have to send it back to EVGA for a new board.

So basically I'm just planning to leave the Corsair at 1866 mhz till EVGA gets the issues sorted out.

Tradesman1 · Oct 13, 2013

Well good luck to you, keep us updated

KosmicKat · Oct 13, 2013

Tradesman1 :

Thanks, I will.

From what I can tell the EVGA X79 Dark has some issues with running 2400 mhz memory... And it can cause the board to go into a permanent stall. I've already had to return two boards because of this.

Pinhedd · Oct 13, 2013

KosmicKat :

EVGA boards are universally poor and have been for a very long time. I have a number of dead NForce based EVGA motherboards including an EVGA motherboard which was incompatible with some EVGA graphics cards due to poor capacitor placement. They really need to stick to graphics cards because they cannot do anything else right.

I'd recommend returning it outright if possible and investing in an Asus motherboard.

Tradesman1 · Oct 13, 2013

Pinhedd :

_____________________________

+1

didn't really want to say it, was hoping to get some good info on the mobo, but he's right, EVGA is dow to only about 4 mobos out here for sale

Sam Gutierrez · Jan 11, 2014

KosmicKat :

Sam Gutierrez · Jan 11, 2014

I7 4930k watercooling..Using gskill 64gb 2400mhz at 2133. At 1.65 volts stable..I can get it to 2400 my but it will only recgonize 32gb of the 64..

Tradesman1 · Jan 11, 2014

Raise VCCSA to 1.25

EVGA X79 Dark i7-4930k + 2400 mhz RAM

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