Memory Timings

[jongeeone]

I have some geil pc6400cr ddr2 and a DS3 mobo etc. CPU Z is reporting mem timings of 5 5 5 18, i set them myself to 4 4 4 12 (which is the rates speed) and my pc reboots it self randomly, is it faulty?

 

[jongeeone]

No i left it stock :|

But i will try it later