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

[AlexDivina404]

Hello,
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?

 

[alexoiu]

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.

 

[shishodia]

your processor please ?