[Ahnt]

I usually go 1.125 or somewhere around there. But it really depends on the ram your using, clock speed and numerous other factors. Sometimes VCCIO can help tremendously or do nothing at all.

My current setup is at 1.128 (Daily Beater system) with a 4.8Ghz 2500K / 2133 ram @ 10-12-12-28 CR1 just for an example.

I would leave EIST enabled. It doesn't hurt anything, and you'll save power / heat as well. Check your windows power settings. That could be what's causing it to lock at full speed.

 

[kingklick92]

Quote:

Originally Posted by Ahnt

I usually go 1.125 or somewhere around there. But it really depends on the ram your using, clock speed and numerous other factors. Sometimes VCCIO can help tremendously or do nothing at all.

My current setup is at 1.128 (Daily Beater system) with a 4.8Ghz 2500K / 2133 ram @ 10-12-12-28 CR1 just for an example.

I would leave EIST enabled. It doesn't hurt anything, and you'll save power / heat as well. Check your windows power settings. That could be what's causing it to lock at full speed.

Thanks for the reply.

Windows power settings in Windows itself is what you are talking about?

You're saying you use 1.125 I/O voltage NOT Vcore right? (just to be sure) If so that's a lot less I/O voltage than I use and your overclock is pretty high @ 4.8Ghz with a 2500K. Interesting....

Also I'm running the XSM3 RAM at 1866Mhz @ 9-10-9-27, but with that being said XMP mode sets it 2000Mhz but I've never had luck getting it stable with 10-10-10-29 and this RAM is supposed to be able to hit 2000Mhz no problem tbh. Maybe the middle timings are too tight and more important than I'm realizing? maybe try loosening to 11-12-12-30?

 

[Ahnt]

Quote:

Originally Posted by kingklick92

Thanks for the reply.

Windows power settings in Windows itself is what you are talking about?

You're saying you use 1.125 I/O voltage NOT Vcore right? (just to be sure) If so that's a lot less I/O voltage than I use and your overclock is pretty high @ 4.8Ghz with a 2500K. Interesting....

Also I'm running the XSM3 RAM at 1866Mhz @ 9-10-9-27, but with that being said XMP mode sets it 2000Mhz but I've never had luck getting it stable with 10-10-10-29 and this RAM is supposed to be able to hit 2000Mhz no problem tbh. Maybe the middle timings are too tight and more important than I'm realizing? maybe try loosening to 11-12-12-30?

Yes, I/O voltage at 1.125v not CPU voltage. All CPU's will respond different to voltages tho. I pushed 1.2 ish voltage (I/O voltage) on my 3570K, but It was only to get over 2400mhz on the ram. I/O voltage didn't seem to make any difference with clock speed however.

Yeah, I would try loosening the timings a little, or add a little more RAM voltage.

 

[kingklick92]

Quote:

Originally Posted by Ahnt

Yes, I/O voltage at 1.125v not CPU voltage. All CPU's will respond different to voltages tho. I pushed 1.2 ish voltage (I/O voltage) on my 3570K, but It was only to get over 2400mhz on the ram. I/O voltage didn't seem to make any difference with clock speed however.

Yeah, I would try loosening the timings a little, or add a little more RAM voltage.

I've tried raising the DRAM voltage with no luck so I think it's a timings issue and I need to loosen them as we both said. Can too much I/O voltage cause instability as well I wonder?

 

[Ahnt]

Actually it can. To much voltage (PLL voltage would be a good example) can actually cause instability. If you're at 1.19v now, try going to down in a few steps (1.17v - 1.15 etc) and see if that helps with your ram stability.