i am not good myself. but why don i give it a try.
because u got a pretty nice combination n it looks fine. n Corsair RAM rarely got a problem.
bfr u replace your RAM, why dont u try to consider the simplest thing? such as :
- power supply. whether all of the power cable is properly plugin.
- 8-pin ATX 12V Power connector properly connected? because your system might lack of a additional power supply for OCing.
whether your RAM is compatible or not :
- in activating XMP, compatible Corsair RAM for your Ivy processor is 4 x ?GB DIMM (example: CMZ16GX3M4X1866C9R), n your red 2 x 2 x 4GB RAM is not in the compatible list, n sorry to say, but i'm afraid your another RAM on delivery also not in the compatible list from intel.
The Intel Ivybridge processors are only tested and guaranteed to work at speeds up to 1600Mhz at JEDEC standard voltages and timings. DRAM modules that operate above the tested frequency, at voltages outside of JEDEC specification or at timings outside of the JEDEC specification are not guaranteed to work.
From link provided by C12Friedman, your G.SKILL Ripjaws-X-Series-F3-14900CL9Q-16GBXL support ASUS P8Z68-V DELUXE, P8Z68-V PRO and P8Z68-V for Z68 chipset. but i think it is just they not yet updated the info for Z77 platform.
I think your G.SKILL might work well on XMP with your Z77 MOBO.
4 DIMM :
• 1 DIMM: Supports one module inserted in any slot as Single-channel memory configuration
We suggest that you install the module into A2 slot for better stability.
• 2 DIMM: Supports one pair of modules inserted into either the blue slots or the black slots as one pair of Dual-channel memory configuration
We suggest that you install the module into A2B2 slot for better stability.
• 4 DIMM: Supports 4 modules inserted into both the blue and black slots as two pairs of Dual-channel memory configuration
-When installing total memory of 4GB capacity or more, Windows 32-bit operation system may only recognize less than 3GB. Hence, a total installed memory of less than 3GB is recommended.
-It is recommended to install the memory modules from the slots for better overclocking capability." (personal note: I have no clue what this means)
"-The default DIMM frequency depends on its Serial Presence Detect (SPD), which is the standard way of accessing information from a memory module. Under the default state, some memory modules for overclocking may
operate at a lower frequency than the vendor-marked value."
So, it does seem that the QML is a little behind. Here's hoping all goes well