Asus P5G41C-M LX w/ G.Skill F3-10666CL9D - 4GBXL Only getting 400Mhz DRAM Freque

I recently just bought some DDR3 RAM (RipJaws F3-10666CL9D) for my Mobo(Asus P5G41C-M LX) which, according to its box and manual, support 1333 speeds. When I installed the ram then booted up, I checked with CPU-Z and only got 400Mhz, next I fiddled with the Timing values, when I tried to use the Ram's intended Timings (9-9-9-24), the PC wont boot, even tweaking with the voltage isnt cutting it.

The puzzling thing for me, is when I put in my Kingston KVR1333 RAM, i get DRAM Freq of 800...

Am I doing something wrong here? Or am i just using/setting the wrong settings?
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More about asus p5g41c skill 10666cl9d 4gbxl 400mhz dram freque
  1. Hi, CPU-Z doesn't show the effective data rate (DDR = double data rate). So 400x2 = 800, that's the speed that the Ripjaws work, which is probably the default one.
  2. your processor please ? :)
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