Just out of interest: Do you own 1333-modules that have 7-7-7-x programmed as JEDEC values and not as additional XMP values into the SPD? I ask because the wikipedia article claims that JEDEC specified 1333 CL8 and 1333 CL7 modules. I don’t think JEDEC specified 1333 CL8/CL7 chips as well. But that one is just my personal guess. But if JEDEC at least specified 1333 CL8/CL7 modules, did they specify those to 1.5V operation?
I know that practically it’s the same when XMP sets the CL7 timings, but I just would like to know for having the background knowledge. If you indeed own JEDEC CL7 1333-modules, do you have any clue whether your chips are native CL8/CL7 ones and therefore the real thing I’m asking for with this posting? Theoretically it still could be CL9 chips with just the SPD programmed to CL8/CL7. Native 1333 CL7 chips would run cooler and would need less power as well I guess (yes, I know there’s the 1.35V lovo spec…). But since even Micron does not make such (I looked at their parts catalog) I guess there is no native CL8/CL7 1333-chip at all.