Yes it's safe.

0.01V will not kill anything.

As for a source, read any kind of memory forum: Corsair, OCZ, etc. If you read through the threads you'll quickly see it's a non-issue.

Your friend has no need to worry.

 

I have set it at 1.64. But it really doesn't make a difference between 1.64 and 1.66 IMO so you should be good.

 

1.66 is plenty fine.

 

dram voltage will not damage your CPU no matter what its set to. Dram voltage goes to your RAM so i dont see how it can harm an i7.

The stock voltage for ddr3 ram is 1.65 so setting it to 1.66 shouldnt harm it at all.

 

Make sure to keep your Uncore voltage within .5v or the chip will degrade.

 

Quote:

Originally Posted by melterx12 dram voltage will not damage your CPU no matter what its set to. Dram voltage goes to your RAM so i dont see how it can harm an i7. The stock voltage for ddr3 ram is 1.65 so setting it to 1.66 shouldnt harm it at all.

Not true. The i7s have an integrated memory controller. You can ruin a processor with too much dram voltage.

 

Whats the max DRAM vt you guys have ran?

 

Quote:

Originally Posted by DuckieHo Make sure to keep your Uncore voltage within .5v or the chip will degrade.

Yep.

And Intel states the safe QPI voltage is 1.35v, so theoretically 1.85v on the DRAM is even okay

I find it hilarious when people see a red value in the bios and then panic.

Quote:

Originally Posted by melterx12 dram voltage will not damage your CPU no matter what its set to. Dram voltage goes to your RAM so i dont see how it can harm an i7. The stock voltage for ddr3 ram is 1.65 so setting it to 1.66 shouldnt harm it at all.

wrong and wrong

JEDEC standard for DDR3 voltage is 1.5v and the CPU has an IMC.

 

Quote:

Originally Posted by DuckieHo Make sure to keep your Uncore voltage within .5v or the chip will degrade.

This

Quote:

Originally Posted by Dopamin3 Yep. And Intel states the safe QPI voltage is 1.35v, so theoretically 1.85v on the DRAM is even okay I find it hilarious when people see a red value in the bios and then panic.

but only if the QPI voltage is at 1.35v (I'm just being a nit-picky

).

 

Quote:

Originally Posted by Dopamin3 Yep. And Intel states the safe QPI voltage is 1.35v, so theoretically 1.85v on the DRAM is even okay

Yeah, but I personally wouldn't run at that for 24/7.

 

Quote:

Originally Posted by melterx12 dram voltage will not damage your CPU no matter what its set to. Dram voltage goes to your RAM so i dont see how it can harm an i7. The stock voltage for ddr3 ram is 1.65 so setting it to 1.66 shouldnt harm it at all.

 

DRAM voltage on i7s is relatively safe up to 1.85v as long as the VTT voltage is at least within .5 volts of vdimm voltage.

 

Quote:

Originally Posted by manolith DRAM voltage on i7s is relatively safe up to 1.85v as long as the VTT voltage is at least within .5 volts of vdimm voltage.

Uncore voltage you mean.

 

Quote:

Originally Posted by DataMatrix Uncore voltage you mean.

no.. i mean vtt qpi voltage.

 

Quote:

Originally Posted by manolith no.. i mean vtt qpi voltage.

I think we are talking about the same voltage setting. However the terminology uncore voltage is more correct. QPI describes connections to off-chip devices (I/O hub etc) not the IMC. QPI connects the devices in high speed but it does nothing more. Setting an uncore voltage doesn't necessarily change the QPI bus voltage.

Example:
DRAM voltage = voltage supplied to the memory sticks.
Uncore voltage = voltage applied to IMC (and other uncore controllers on-chip).

A voltage difference of more than 0.5 between the uncore and DRAM will damage the IMC.

Consider the uncore being the northbridge (hence it's frequency and voltage), IOH/ICH being two different southbridges and the QPI just being the FSB.
Also, you must remember that increasing the uncore frequency doesn't mean more throughput on the QPI bus (which could end up in a bottleneck if you REALLY push it). Increasing the frequency on FSB-style CPUs did this however.

Makes it easier to understand then.

 

Interesting...

My ram says it's default 1.65v so I assumed it was ok:
WP160UX4G9|2x2 GB|1600 Mhz|9-9-9-28|1.65V

And I believe my uncore voltage is default at 1.1v (not at home so can't check)

Does that mean I should be raising my uncore voltage to 1.2v or so to be safe?

Non-overclocked i5-750

 

Quote:

Originally Posted by mejobloggs Interesting... My ram says it's default 1.65v so I assumed it was ok: WP160UX4G9|2x2 GB|1600 Mhz|9-9-9-28|1.65V And I believe my uncore voltage is default at 1.1v (not at home so can't check) Does that mean I should be raising my uncore voltage to 1.2v or so to be safe? Non-overclocked i5-750

Up that uncore quickly! Set it to 1.25v and you should well within the threshold.

 

WOW really, everyone knows once you go over 1.65V on dram your computer explodes right after the i7 melts and creates a black hole.

/facepalm