CMX6GX3M3A1333C9 kit, Asus P6X58D Premium - XMP does not set to 1333.

[lalittle]

I'm using a CMX6GX3M3A1333C9 kit with an Asus P6X58D Premium. I was under the impression that I would be able to set the system to X.M.P. mode in the BIOS, and that this would assign all the necessary settings in the BIOS to run the RAM at the correct speed -- i.e. 1333MHz. When I do this, however, it does not change anything -- the memory continues to run at 1066.

 

I updated the motherboard BIOS to the latest version, but it did not fix this.

 

Am I misunderstanding something here? Shouldn't the XMP profile set the memory to 1333?

 

I had a similar issue in the past, and a replacement set with a higher version number worked fine, requiring no manual changes to the BIOS to get the RAM to work at its rated speed. Could a more recent revision of this kit potentially solve this issue?

 

Note that I have two sets of the exact same RAM (for two different systems -- I only use three sticks for a system) that do the exact same thing. Also, when I look at the "1st information," etc. in the BIOS, the timings don't match the timings listed for this RAM. I'm not sure if this is because the timings at show up differently in the BIOS when the RAM is running at 1066, or if the RAM is perhaps giving the motherboard incorrect information.

 

Thanks,

 

Larry

 

PS. On a side note, I'm also getting the issue that a lot of others have reported where only 4GB of the RAM are detected on a cold boot, but all 6GB show up after a few reboots.

[lalittle]

I did more reading on this, and I found reports from people saying that when they enabled XMP in their BIOS, all the settings INCLUDING the speed were set properly -- i.e. that they didn't have to manually change any settings in order to get the RAM to work at the faster rated speed.

 

Does anyone know why this does not happen when I enable XMP in my BIOS? Mine just stays at 1066.

 

Thanks,

 

Larry

[rezmax]

Hey I am having the same exact problem with the same exact motherboard. Except I am using 24 GB OF CORSAIR XMS 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 2000 (PC3 16000) CMX8GX3M2A2000C9. Do you have any info on how to get my 2000MHz working right so I'm not sitting at 1066MHz? Thanks

[peanutz94]

I'm using a CMX6GX3M3A1333C9 kit with an Asus P6X58D Premium. I was under the impression that I would be able to set the system to X.M.P. mode in the BIOS, and that this would assign all the necessary settings in the BIOS to run the RAM at the correct speed -- i.e. 1333MHz. When I do this, however, it does not change anything -- the memory continues to run at 1066.

 

I updated the motherboard BIOS to the latest version, but it did not fix this.

 

Am I misunderstanding something here? Shouldn't the XMP profile set the memory to 1333?

 

I had a similar issue in the past, and a replacement set with a higher version number worked fine, requiring no manual changes to the BIOS to get the RAM to work at its rated speed. Could a more recent revision of this kit potentially solve this issue?

 

Note that I have two sets of the exact same RAM (for two different systems -- I only use three sticks for a system) that do the exact same thing. Also, when I look at the "1st information," etc. in the BIOS, the timings don't match the timings listed for this RAM. I'm not sure if this is because the timings at show up differently in the BIOS when the RAM is running at 1066, or if the RAM is perhaps giving the motherboard incorrect information.

 

Thanks,

 

Larry

 

PS. On a side note, I'm also getting the issue that a lot of others have reported where only 4GB of the RAM are detected on a cold boot, but all 6GB show up after a few reboots.

Larry, are you making sure to save your settings before exiting the BIOS and after you enable XMP? And can you post a screen shot of CPUz's memory tab after you have enabled XMP?

 

As far as memory detection goes , please check out this sticky found here.

http://forum.corsair.com/v3/showthread.php?t=82274.

 

I have gone through three of these MB's through RMA's for the same thing. So if you can't get it to detect correctly after following all the suggestions in that thread , then the board needs to be replaced.

Shouldn't the XMP profile set the memory to 1333?

No, because 1333mhz is not really an overclock , so there may not be an XMP profile for it. Usually it's 1600mhz and above .

 

@rezmax

Could you please start your own thread/ While you may be having similar issues , your using different memory and the outcome is going to be completely different.