Runnin 8 Dimms on LGA2011 (Help Needed!)

[Jeremy1998]

Running 8 Dimms on LGA2011 (Help Needed!)

Okay guys.. As I have newely discovered, you can't run 8 dimms of ram in an LGA2011 system without some work.

Here's my spec list:
Gigabyte X79S-UP5-WIFI
Intel 3930k Cooled by Corsair H100
Dual Sapphire 7950 OC 950MHz Edition GPU's
Corsair Dominator GT 2133MHz (32gb, 8 x 4gb) (click it for ram specs)
Corsair AX1200i
Corsair Neutron GTX 240gb SSD

So, I know I need to change voltages to have it stable... But what voltages need changed, and roughly how much?

(Also, I know Tom hates that motherboard... Sorry Tom...)

 

[SPS]

What happened to the R4E?

Running 8 dimms should be fine. But you're having trouble running the RAM at their rated spec?

 

[ruairi.C]

^this you're build in build log had R4E?

 

[Jeremy1998]

What happened to the R4E?

My computer build is completely over and done with. I'm just taking my time uploading the pictures. Later on down the road, I switched motherboards. I will be picking back up on the Big Red later on, with the R4E. For now, I'm focusing on my workstation build, with the Gigabyte board, and eventually 64gb of ram, and 2 Nvidia cards.

 

[SPS]

How much RAM is the OS/BIOS reporting? What edition of Win7 do you have?

 

[Jeremy1998]

How much RAM is the OS/BIOS reporting? What edition of Win7 do you have?

The OS shows all 32gb... But it's currently running at 1333MHz. If I use the XMP profile to take it to 2133, it is unstable. People have said to bump some of the CPU IMC voltages, but I don't know which oens.

I'm running Win 7 Ultimate 64 bit.

 

[SPS]

The OS shows all 32gb... But it's currently running at 1333MHz. If I use the XMP profile to take it to 2133, it is unstable. People have said to bump some of the CPU IMC voltages, but I don't know which oens.

I'm running Win 7 Ultimate 64 bit.

Up the LLC for IMC, that should reduce vdroop. But apart from that, I think you may need someone who has worked with X79 boards to offer some advice.

 

[seumasbeathan]

, I'm focusing on my workstation build, with the Gigabyte board, and eventually 64gb of ram, and 2 Nvidia cards.

I don't want to cause trouble or anything but 64gb?

 

[Jeremy1998]

Up the LLC for IMC, that should reduce vdroop. But apart from that, I think you may need someone who has worked with X79 boards to offer some advice.

Does anyone know the max safe voltage for that? Becuase I don't want to fry anything. Also, what is the max safe voltage for 1.5v memory? Because people have said that that needs to be overvolted to run these at 2133.

I don't want to cause trouble or anything but 64gb?

Rendering multiple videos at the same time, while running virtual machines, while this machine being a server in the background. Yeah, it's going to be a memory hog.

Edit: Oh yeah... And add gaming to that list of tasks.
Edit: And maybe a ramdisk... This list keeps growing!

 

[Vicey]

8 DIMM's works fine on LGA 2011 without any work. But only if you stick to 1866MHz or below and you are trying to get 2133MHz to run which is difficult on LGA 2011. 2133, 2400 and above isn't a sure thing and your memory controller may just not be up to it regardless of the voltages you throw at it. I'm not saying you shouldn't try of course but if it's not working already you're probably in for a headache.

 

[Jeremy1998]

8 DIMM's works fine on LGA 2011 without any work. But only if you stick to 1866MHz or below and you are trying to get 2133MHz to run which is difficult on LGA 2011. 2133, 2400 and above isn't a sure thing and your memory controller may just not be up to it regardless of the voltages you throw at it. I'm not saying you shouldn't try of course but if it's not working already you're probably in for a headache.

It isn't even stable at 1600MHz though... I need to see how high it will go, and then I can buy the corresponding ram, and sell this faster stuff if the chip won't do 2133.

 

[kilobravo]

You need to up VCCSA and VCCIO(cpu vtt).Personnally i wouldnt go above 1.3v on both.If you have a chip with a bad imc controller you wont get anywhere with it,no matter how much you tweak it.Vcore also need some attension and need to be raised.Dont think you should try to oc at all for starters.

 

[Jeremy1998]

You need to up VCCSA and VCCIO(cpu vtt).Personnally i wouldnt go above 1.3v on both.If you have a chip with a bad imc controller you wont get anywhere with it,no matter how much you tweak it.Vcore also need some attension and need to be raised.Dont think you should try to oc at all for starters.

Uhgg. Every time I've played the silicon lottery, I go home broke... So with my luck, I won't be able to run 2133, and probably even 1866.

BTW, someone else I talked to said that I need to raise the timings. Is that true?

 

[Vicey]

If you want higher MHz you may need to increase your timings to lower the stress on the memory controller. It would appear based on your earlier posts in this thread that your CPU isn't very good.

Personally I seem to always get lucky, my 3930K does 32GB (8x4GB) @ 1866MHz 1.5v with 9-9-9-27 timings. I am using a RIVE but I'm not sure how much the board plays in this kind of thing with the memory controller now in the processor.

 

[Jeremy1998]

If you want higher MHz you may need to increase your timings to lower the stress on the memory controller. It would appear based on your earlier posts in this thread that your CPU isn't very good.

Personally I seem to always get lucky, my 3930K does 32GB (8x4GB) @ 1866MHz 1.5v with 9-9-9-27 timings. I am using a RIVE but I'm not sure how much the board plays in this kind of thing with the memory controller now in the processor.

Great... And my AMD FX-8150 can not overclock at all on stock voltage... [sarcasm]I always seem to get the best of the best chips! [/sarcasm]

 

[airdeano]

are those quad channel RAM kits or two dual channel kits? although they may
have the same specs, the "match" may not be perfect. try four sticks and see
if they clock as spec'd. another would be new or used?

the giggies have a power phase issue and seem to flop and phail on power
delivery. and this could be one of those issues. if you cant clock simple
1600/1833 there is an issue and prolly not in the IMC.

try 2 sticks, four sticks swap the other four and verify at least 1833. yes the
IMC is a lottery player, but not for simple 1600/1833 operation.
another operation would be a memtest starting @ 1333 and progessively
increasing to 2133 (if rated).

if it is two dual channel kits, drop the 2nd set and use the matched dual kit. and
seek a quad channel kit. the testing would be best at a stock to moderate clock.

airdeano

 

[Jeremy1998]

are those quad channel RAM kits or two dual channel kits? although they may
have the same specs, the "match" may not be perfect. try four sticks and see
if they clock as spec'd. another would be new or used?

They're quad channel kits, and they're brand new.

the giggies have a power phase issue and seem to flop and phail on power
delivery. and this could be one of those issues. if you cant clock simple
1600/1833 there is an issue and prolly not in the IMC.

When running all 8 dimms, I can not set them to 1600 and be stable at stock voltages. And this was tested on an R4E, so it's not a mobo problem at all. It is the CPU, pretty much guaranteed.

 

[tinytomlogan]

Right, the mobo is fine. The CPU is normal. YOU have to set it up right to run correctly with that much ram. You just need to put the time in and realise you have bought a high end product that to get high end results from you need a higher than normal level of knowledge.

IE: stop moaning and get tweaking. 8x 1600 is easy just get in the bios and sort it son!

 

[Jeremy1998]

Right, the mobo is fine. The CPU is normal. YOU have to set it up right to run correctly with that much ram. You just need to put the time in and realise you have bought a high end product that to get high end results from you need a higher than normal level of knowledge.

IE: stop moaning and get tweaking. 8x 1600 is easy just get in the bios and sort it son!

Yepp. I knew it wasn't going to be easy, I just didn't know where to start. But it seems to be stable at 1866 right now. Gonna see if I can hit 2133.