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idata
Community Manager
968 Views

Compatible memory for DX58OG / i7 990x config?

Hello,

I'm sorry for kind of doubling the question, but it seems like a better way to get an answer. I had this problem I posted here: /message/173255# 173255 http://communities.intel.com/message/173255# 173255 and Victor told me I gotta use RAM memory that works at 1066MHz at 1.5v cl9.

So I'm wondering, is there such a memory at all? I.e. is there a memory that is guaranteed to work with Intel DX58OG / i7 990x? Like an actual model, maybe anyone got actual expereience or there's some official note on that? And what would be proper BIOS Memory settings to run such a RAM?

Also, if it is told that Intel i7 990x is supporting only 1066MHz at 1.5v cl9 RAM, why are there much higher frequencies / voltage settings listed as compatible here?

http://www.intel.ru/content/dam/www/public/us/en/documents/datasheets/core-i7-extreme-memory-supplie... http://www.intel.ru/content/dam/www/public/us/en/documents/datasheets/core-i7-extreme-memory-supplie...

http://www.intel.com/content/dam/doc/datasheet/core-i7-extreme-memory-suppliers-1111-datasheet.pdf http://www.intel.com/content/dam/doc/datasheet/core-i7-extreme-memory-suppliers-1111-datasheet.pdf

I could rephrase my main question: is Intel DX58OG compatible to run with i7 990x at all?

Thank you very much in advance.

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3 Replies
ZAgha
New Contributor II
69 Views

You probably are having these problems cause you have loaded your memory controller to the MAX. However, the X-58 board you have is a stable board once you have it configured properly.

We need to take things from the start:

First I need you to run it using 3 DIMMS "tripple channel" using the XMP at 1.65v

Since this is supported by your board & your rams

If it works then load the default setup BIOS & add one DIMM at a time

Your board supports the i7 990 & it should run like a champ

start with this & keep us updated

To answer your question about the different frequencies.

Your memory controller reads the RAM speeds at 1066 but, it will also read them at 1600 through the XMP since you are not OCing your CPU. However, since you are using the highest RAMS supported by your board the controller is somehow being stressed.

To make a long story short start with what I suggested & we'll take it one step at a time

idata
Community Manager
69 Views

Thank you for answering, Ziad.

Yes, it is what I'm doing right now, running 3 DIMMs Triple Channel XMP-1600 @ 1.65v. And yes these are the best settings at the moment as I figured out, but it still fails memory test by freezing. By best I mean it does work longer with high-load apps, but eventually it freezes anyway.

Yes, I also tried loading BIOS defaults and running sticks one-by-one (also testing slots in a same fashion). So all 6 sticks I got failed it, the only difference was the time they took it to fail.

Thanks again for your help. Take care.

ZAgha
New Contributor II
69 Views

Then you might have to consider testing different RAMS

Also take into consideration:

Is your PSU a stable single rail PSU? The X-58 chipset works best on a good single rail PSU with at least 600W cause you have a six core CPU

So, is you rig well powered?? & is your CPU well cooled?

The X-58 is somehow an old system. So how long have you been having this issue??

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