ga-x79-up4 : only 1 vendor on the 64gb ram list

[dev-2013]

this is the 64gb kit; memtest86+ 4.20 is indicating that the mobo has issues with channels C&D (typically failure on 32 bit inversion test). ie, after rotating dimms a couple of times, ch A&B (slots 1,2,5,6) always pass, ch C&D (slots 3,4,7,8) always fail, regardless of which dimm is in those slots.

 

Nothing is overclocked (I'm a developer just looking for a stable system), tried relaxing to 10-10-10-24, lowering to 1333 and 1066, increasing voltage a bit, etc., but no luck.

 

Any ideas?

 

And if not, any suggestions for a mobo that's proven to be compatible with this kit?

[peanutz94]

Looks as if that board is bad. But your modules would be compatible with any of the latest Intel CPU's

[dev-2013]

approved ram list pdf from the mfg site:

 

http://download.gigabyte.us/FileList/Memory/mb_memory_ga-x79-up4.pdf

 

other interesting pieces of info in there; some dimms will only work in slot 3 (!), but nowhere else.

 

so you buy this 64g mobo, and the fine print basically says that only one mfg can produce 64g of plain jane 1600 ram that's good enough to work with this finicky board.

 

Might be nice for mobo mfg's and the retailers to put that info front and center on the sales page instead of buried in a pdf on the the mfg site.

[peanutz94]

o you buy this 64g mobo, and the fine print basically says that only one mfg can produce 64g of plain jane 1600 ram that's good enough to work with this finicky board.

 

 

The approved lists that the MB manufactures put out is just a list of memory that was tested at the time of pre-production and sadly they are never updated.

 

You could use just about ANY of Corsairs 64 gig kits or really any other manufacturers memory for that fact. So your not just limited to one kit.

 

other interesting pieces of info in there; some dimms will only work in slot 3 (!), but nowhere else.

Then you need to have the board RMA'd. There is obviously something wrong with that slot.

[dev-2013]

Just to clarify; the slot 3 issue is in their approved mfg list; for example, according to the pdf I linked to, their testing shows that patriot psd31g106681 only works in slot 3. nowhere else.

 

As far as any 64gb kit working, their pdf lists 7 different mfg's 8gb dimms. Only one of the 7 worked in all slots.

 

So it looks to me like 6 of the 7 failed to pass validation. And the 64gb corsair kit that I have shows errors in memtest, which shouldn't surprise me based on their data.

 

6 out of 7 failures doesn't appear to be good odds.

[peanutz94]

Your reading too much into that. How they test memory and in what slots is irrelevant. And the others are not failures, just that it hasn't been tested.

 

At the very top it also says

Memory modules listed below are for reference only. Due to massive memory models on the market, we c

an only verify some of them

When memory is certified it will be certified to work in ANY slot on that MB. The MB doesn't have the ability or memory for that fact to just run a certain memory in a certain slot. And just because a certain set does not appear on that list doesn't mean it's incompatible. There are just too many of them to test them all. Why Gigabyte lists them like that is beyond me. No other Mb vendors do.

As i stated earlier ANY of the Vengeance 64 gig kits would be compatible with your MB. Also the Dominator and Platinum lines would also work with your MB.If you would like Ramguy to confirm this it will probably be

sometime Monday because they are closed on the weekends.

 

Just keep in mind that even though your MB support memory up to 2133mhz , your CPU only supports memory up to 1600mhz. So to reach the higher speeds you would need to overclock the memory. And the actual amount your CPu will overclock will depend on your individual CPU. Some will run 2133mhz memory easily and some won't.

[RAM GUY]

When using 64GB of memory, you are putting an extremely high load on the IMC of the processor. Most people who try to do so on the 3930K, for example, don't have much luck going beyond 1333 most of the time regardless of which brand of memory they're using. To overclock 8GB DIMMs is hard enough, to do so with 8 sticks of them is monumental to the CPU's IMC. Results will vary depending on the headroom of your CPU(s).

[dev-2013]

well, I'm not oc'ing anything; I'm a developer, so I'm looking for stability, not speed. I've tried dropping the timing/clock/etc., to try and get that, but no dice.

I'm getting about 8 errors per pass in memtest, so considering it's 64gb, it's not horrible, but I'd prefer 0 errors if it can be achieved.

 

So I asked for mobo recs that are known to be rock solid with these dimms; assuming that any old x79 board would work is what got me to this point; from the sounds of it no one here is running 64gb on their board.

 

I just hate the idea of returning this stuff because of some minor issues, and they seem to be so few that I was hoping a couple of small tweaks would clear it up.

[dev-2013]

out of curiousity...

are there any std tweaks I can try to keep the IMC happier with 64gb?

like I said, I'm not oc'ing, just looking for a smooth ride.

slow and stable is fine with me.

[RAM GUY]

Test each module one at a time to ensure its not the memory because we guarantee 0 errors in Memtest. You would only need to test each module about 3 passes to get a thorough result. As for tweaking the IMC, there isn't much you can do that we would recommend, however you can raise the DRAM voltage slightly (max. 1.65V) to help with the load.

[peanutz94]

Originally posted by RamGuy:

Test each module one at a time to ensure its not the memory because we guarantee 0 errors in Memtest. You would only need to test each module about 3 passes to get a thorough result. As for tweaking the IMC, there isn't much you can do that we would recommend, however you can raise the DRAM voltage slightly (max. 1.65V) to help with the load.

RG , the OP has another thread going with other information. He's already tried raising voltages and also testing with memetest. The results are quoted below. But it just doesn't point towards any issues with the memory itself.

http://forum.corsair.com/v3/showthread.php?t=117028

 

 

So I asked for mobo recs that are known to be rock solid with these dimms; assuming that any old x79 board would work is what got me to this point; from the sounds of it no one here is running 64gb on their board.

 

I just hate the idea of returning this stuff because of some minor issues, and they seem to be so few that I was hoping a couple of small tweaks would clear it up.

 

From your other thread...

this is the 64gb kit; memtest86+ 4.20 is indicating that the mobo has issues with channels C&D (typically failure on 32 bit inversion test). ie, after rotating dimms a couple of times, ch A&B (slots 1,2,5,6) always pass, ch C&D (slots 3,4,7,8) always fail, regardless of which dimm is in those slots.

Nothing is overclocked (I'm a developer just looking for a stable system), tried relaxing to 10-10-10-24, lowering to 1333 and 1066, increasing voltage a bit, etc., but no luck.

I understand it's a pain to return things, but there is nothing in your descriptions or troubleshooting that would point towards bad memory. But everything that points towards a bad MB.

 

assuming that any old x79 board would work is what got me to this point; from the sounds of it no one here is running 64gb on their board.

The vengeance series is compatible with all of the latest Intel CPU's and as long as the MB will support 64gig's, regardless of the manufacturer, it shouldn't be an issue with your processor.