I'm kind of noobie on this subject, what softwares can tell me the volts that the memory is set at?
CPU-z can tell you basic timing question but not volts. ITE Smart Guardian should be able to show you the voltage for your RAM. You can also view all this by going into the BIOS screen before boot up.
I need higher volts to set to better timings right?
In general, yes. There is a limit to the voltage you can apply to your memory without frying it and certain modules actually like less voltage. Only one way to find out, experiment (with in reason
).
Do I need to run Memtestx86 after I change the volts and timings.
After you change the timings you should run MemTest86 or Orthos, something needs to be done to ensure stability before you start working on the computer.
I think that the JEDEC defaults all the Intel chipsets at 1.8 volts and 5-5-5-15.
I am not sure I agree with you about JEDEC. The memory defaults to timings embedded on the SPD on each module (if the mobo can handle such timings). JEDEC sets the standards for speed only, as far as I know.