Higher CPU Frequency or Tighter RAM Timings?

[carman594]

I just got my 8gb of Mushkin RAM and cant seem to run it at 4-4-4-12-2T with my CPU overclocked only 20 MHz. I can overclock the processor if I set my ram to 5-5-5-18-2T. Which is better, tighter RAM timings or higher CPU overclock?

 

[daskrabbe]

CPU overclock. RAM timings have little to no real world effect.