Originally Posted by HAF_wit;12976576
+3% of 1.575 isn't less than 1.35v. Do you have an actual reference for this data? I've been going off of the intel spec sheets, and my interpretation of this is that max vccio is +3% of VDDR3.
Edit: I'm not saying that 1.05v isn't max, just that from everything I've read it's just typical
(meaning what oem manufacturers spec for at stock). I'm always looking for more information, so if I'm wrong, I'm happy either way.
What are you looking at? +3% of 1.575V doesn't make sense, one is for Vccio and the other is for Vddq.
Vddq or Vccio? You should be looking at Vccio AFAIK which is 1.05V default and +3% = 1,0815V.
Here we go:
VDDQ: more commonly known as Vdimm or Vdram, this is the voltage for your memory. Formally known as I/O voltage for DDR3, Intel states maximum at 1.575. YOU should run this at whatever it says on your RAM.
So when you say Vddq, we're actually talking about Vdimm or DRAM on our boards. This should be between 1.5V and 1.65V unless you have special low-voltage RAM, just like my OC guide says.
VCCIO: more commonly known at QPI/VTT voltage, this is the VTT voltage. Formally known as Processor Power for I/O it is the voltage for the integrated memory controller as well as the PCI-E controller. While Intel’s Maximum is 1.05 +/- 3% = 1.08v, you can go higher, much higher. I would recommend staying below 1.2v for 24/7 use, but depending on the quality of the IMC on your chip, I have seen 2133 MHz done on as little at 1.1v.
Vccio is, as it says in my OC guide, meant to be 1.05V. This guy claims you can go higher and I've heard the same from other sources, but I'd play it safe and stay under 1.15V. It won't need a bump unless you're doing extreme speeds.
I can't remember all these things, but I seem to have done my homework when I wrote my recommendations. Just pray to god that Intel didn't miscalculate something.Edited by B!0HaZard - 4/2/11 at 5:24pm