Intel Communities: Message List - Intel DH67CF 1.35v RAM Issue

Re: Intel DH67CF 1.35v RAM Issue

webadmin@intel.com — Thu, 08 Sep 2011 22:49:11 GMT

I have confirmation that the Corsair RAM has no issue running at 1.5v so I will mostly ignore this but I may call Intel support sometime when I am not so busy and see what happens.

Re: Intel DH67CF 1.35v RAM Issue

webadmin@intel.com — Wed, 07 Sep 2011 19:31:17 GMT

Spoke to support via Live chat a little, and from what I take away from that is that is BIOS option does nothing and thus is bit deceiving and just there to cause confusion it seems. Was told to try call local support to try escalate this issue, but not sure if it worth it.

Re: Intel DH67CF 1.35v RAM Issue

webadmin@intel.com — Wed, 07 Sep 2011 13:39:59 GMT

You're correct in what you say. But the only thing that would make sense is if the board detects that the memoy isn't compatible for the chosen voltage and tries the closest spd profile, the sensors are showing incorrectly or the bios firmware is messed up. You could try to measure power consumption while changing between 1.5 and 1.35 to see if it actually works.

Re: Intel DH67CF 1.35v RAM Issue

webadmin@intel.com — Wed, 07 Sep 2011 11:40:40 GMT

That makes no sense, SPD and XMP are just there to be used for automatic defaults, there is no forcing. On a motherboard that can adjust this properly, you can set whatever you want and it will take, its just a matter if the RAM itself will work with whats set.

Re: Intel DH67CF 1.35v RAM Issue

webadmin@intel.com — Wed, 07 Sep 2011 11:34:36 GMT

Your memory doesn't accept other voltages than the 1.5v (1066mhz & 1333mhz) and 1.35v (1600mhz). So your memory is restricting your motherboard from using other voltages. You cannot ie use 1.35v with any other speed than 1600mhz with those memory sticks.

Re: Intel DH67CF 1.35v RAM Issue

webadmin@intel.com — Wed, 07 Sep 2011 11:12:54 GMT

Yep, the SPD is set at 1.5v and XMP at 1.35, but this still doesnt explain why the board simply doesnt accept voltage change. The BIOS option is there for exactly this reason in my option, it just doesnt work. I can set it to 1066/1333 without issue and even the timmings between 7-7-7-21@1T or 9-9-9-24@2T without issue. With all the above settings, the voltage setting never works.

Re: Intel DH67CF 1.35v RAM Issue

webadmin@intel.com — Wed, 07 Sep 2011 07:29:06 GMT

From my understanding the motherboard supports a range of voltages just like others have mentioned BUT, and this is where people seem to be confused, only at specified speeds (1066Mhz & 1333Mhz). So in other words the board simply isn't compatible with 1600Mhz memory and therefor your memory runs at 1333mhz where it has a specification of using 1.5v and not 1.35v (which is for 1600Mhz only).

Here you can clearly see that the corsair memory only does 1.35v at 1600Mhz and 1.5v at all other speeds:
http://www.corsair.com/media/cms/Blog/650D_SilentPC/CPUZ.jpg
(from this page: http://www.corsair.com/blog/silent-or-close-to-it-a-650d-plus-2nd-generation-intel-core-processor-build-log/ )

Re: Intel DH67CF 1.35v RAM Issue

webadmin@intel.com — Wed, 07 Sep 2011 05:12:07 GMT

Nipo wrote:

DH67CF being ITX, probably lacks the circuitry to set different voltage.

That's what I initially thought but as mentioned earlier, the downloadable product brief for *this specific board* mentions it supports different DIMM voltages. Are you saying Intel are misadvertising this product???

We really need to hear the outcome of formal enquiries with Intel Tech Support.

Re: Intel DH67CF 1.35v RAM Issue

webadmin@intel.com — Wed, 07 Sep 2011 00:02:41 GMT

On DH61WW Memory 1.35V. Active shows 1.500. Monitor 1.36V.

1.500 set should be 1.51 in monitor, 1.4500 - 1.46V.

by default Automatic result as if 1.55 is set - 1.57V. if all these result 1.48V in monitor then it's clear.

DH67CF being ITX, probably lacks the circuitry to set different voltage.

Depending on the board revision there is a single 820mF capacitor added for stability with 2 dimm and IntGfx.

Re: Intel DH67CF 1.35v RAM Issue

webadmin@intel.com — Tue, 06 Sep 2011 23:13:08 GMT

Its quite clear in BIOS, I set the proposed to 1.35v, restart, then in BIOS, it shows 1.35v as proposed, but under active it shows 1.5v and in system monitor it shows 1.48v aprox.