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Asus P7P55D Deluxe with CMD4GX3M2A1600C8


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hi everybody..

first: all my respects to corsair :biggrin:



my problem that my system recognize memory (CMD4GX3M2A1600C8) with (PC3-10700H (667 MHZ)) /1333Mhz instead of (PC3-12800 (800 MHz))/1600MHz)


it just give me the (1600MHz) when i choose the XMP profile, but the Max Bandwidth value still ( PC3-10700 (667 MHz))


my question: can i make my system normally read my memory with 1600MHz (PC3-12800 (800 MHz))


My CPUz test pics found in attach files





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The memory is manufactured at DDR3-1333 speeds per JDEC specifications. The higher frequencies is achieved via overclocking or XMP profile read by the motherboard. Corsair and other manufacturers will warranty their memory for the rated speeds and timings. CPU-Z is reading the SPD from the memory which stands for Serial Presence Detect. It has nothing to do with the capability of the memory product, just what is programmed into the ICs. Ignore this number. The important number is under the Memory tab. That is showing the actual frequency your memory is working at right now along with the associated timings. Your memory, via the BIOS on your motherboard is set to run DDR3-1336 speeds. Essentially DDR3-1333 but your motherboard might slightly bump the clock speed by default.


So what you have to do is enter your BIOS and either enable the XMP profile from your memory or manually change the memory ratio so that it is running at DDR3-1600 speeds.


If you enable the XMP profile and see 800Mhz in the "memory" tab of cpu-z NOT the SPD tab, then you are getting DDR3-1600 speeds.

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  • 2 weeks later...



I finally decided to change my old hardware made of P4 3.2C / P4C800 Dlx / TWINX512-3200XL Pro for that : Core I7 860 / Asus P7P55 Dlx / CMD4GX3M2A1600C8.


I haven't recevied this new hardware yet but I'am worried about the fact that I can't find my memory module in the Qualified Vendor List (QVL) for this motherboard.

Idem, I can't find my motherboard in the list of comptable memory : http://www.corsair.com/configurator/memory_results.aspx?id=1080805


Is it a "bad sign" (sorry for my poor english) ?

Should I change my memory module for one that I can find in this list ?




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