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Vengeance LED CMU32GX4M4C3466C16 / Asus X99 Deluxe / XMP / Issues


Beauzinga

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Hi Community,

 

Two weeks ago I purchased two Corsair Vengeance LED CMU32GX4M4C3466C16 32GB (4x8GB), for the total of 64GB. I noticed I couldn't enable the XMP profile in BIOS or even using the switch on the motherboard. The troubleshooting steps I have taken so far are: clearing CMOS, re-seating the sticks, only installing one kit of sticks (32GB), only installing one stick at a time and did a MemTest with no errors. I did notice though using CPU-Z that one of the slots/sticks didn't show a XMP and another slot/stick that couldn't identify the manufacture (see attached photos). Because of this I requested a RMA and go both kits replaced.

 

I installed the new sticks by first installing just 32GB and noticed XMP was available in BIOS but as soon as I installed the next kit (64GB) XMP isn't available and now it won't allow me to enable XMP with any memory installed. Again using CPU-Z I having the same issue again, No XMP and no manufacture details on 2 sticks. I used the same troubleshooting steps that I did with the first set of kits and nothing. Now I'm here...for a solution...hopefully.

 

What could be the issue? Any suggestions would be appreciated.

 

 

 

 

Computer Specs:

 

Central Processing Unit

Intel Core i7 5930K @ 3.5GHz (LGA Socket 2011-v3)

 

Graphics Processing Unit

2x EVGA Nvidia GeForce GTX 1080 FTW Edition 8GB

 

Random-access Memory

Corsair Vengeance White LED 64GB DDR4 XMP 2.0 @ 2133MHz

 

Motherboard

ASUS X99-Deluxe

 

Power Supply Unit

Corsair AX 1200i Digital ATX

 

 

 

 

BIOS - No XMP

http://imgur.com/4BhpPon

 

Ai Overclock - No XMP

http://imgur.com/GNgJEQD

 

Memory Info - CPU-Z

http://imgur.com/UPjqlqa

 

Stick - No Manufacture Details - CPU-Z

http://imgur.com/eWOYOb8

 

Stick - No XMP Profile - CPU-Z

http://imgur.com/DY4O3vo

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Interesting. Both the Manufacturer name and XMP profiles come from bytes 256 -> 511 of the device SPD data, so I expect there is some sort of issue either with reading this or maybe it was not loaded correctly in the factory. Note that the SPD has to be read by doing two reads of 256 bytes.

 

I need to see what the raw SPD data looks like to comment further. Can you attach the CPUZ save file to a post? Better still get my SIV utility and attach a selective save of the [spd] section, see http://forum.corsair.com/forums/showthread.php?p=788225 for how to do this.

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Below you can see DIMM #1 and #2 are identical, but #3 is rather different so the RAW SPD data in DIMM #3 is wonky.

 

Ideally you would have attached the SIV information so I could confirm CPUZ and SIV both read the same raw data, but thus far you have not.

 

If you generate another CPUZ .TXT file is the raw SPD data identical?

 

Assuming SIV reports the same wonky data you will need to RMA the DIMMs.

 

You also seem to have 2 x 32GB kits rather than 1 x 64MB kit which is not ideal as the two kits may not be matched.

 

attachment.php?attachmentid=26343&stc=1&d=1472456526

53321666_RAWSPDdataiswonky.thumb.png.4b26d5340d0e7ba3baaab6eb2c2261fd.png

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You also seem to have 2 x 32GB kits rather than 1 x 64MB kit which is not ideal as the two kits may not be matched.

 

This might explain why when I took one 32GB kit out XMP worked. I'm going to take the other kit out put the kit I took out in and see if I get XMP if I do then I'll have to get just 1x 64GB and not 2x 32GB.

 

Thanks

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This might explain why when I took one 32GB kit out XMP worked.

 

No, the SPD being wonky is the issue. Once all the DIMMs report identical SPD then this may become an issue.

 

With just 4 DIMMs then only DIMM #3 is wonky, but as CPUZ fails to specify the SPD SMBus address it's impossible to know how this relates to when 8 DIMMs are installed. SIV does not have this issue so unless you post SIV dumps I can't help you any further.

 

attachment.php?attachmentid=26345&stc=1&d=1472458160

337869451_32GBDIMM3iswonky.thumb.png.f4c0c6bfc0aacebbe4bddb45d5c409a1.png

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I think I'll RMA both and just get 1x64GB and not 2x32GB...

 

I suspect this is the only sensible option as the SPD in both kits seems to be wonky.

 

Is ASUS AI Suite active? if so then this can cause issues reading the SPD data as it fails to interlock access to the SMBus. In general if you have AI Suite active you should not use any other hardware monitoring programs such as AIDA64, CPUZ, HWiNFO, SIV, etc..

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I suspect this is the only sensible option as the SPD in both kits seems to be wonky.

 

Is ASUS AI Suite active? if so then this can cause issues reading the SPD data as it fails to interlock access to the SMBus. In general if you have AI Suite active you should not use any other hardware monitoring programs such as AIDA64, CPUZ, HWiNFO, SIV, etc..

 

I don't have ASUS AI Suite installed.

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