Board overvolts dimm at normal (1.8v setting)

[velozzity]

I recently purchased a 4 gb set of OCZ Low Voltage 1066 memory (2gb x 2dimm) and had though I had found a good setting at stock voltage of 1100mhz, even have had it up to 1130 prime 95 blend stable overnight. I am running the memory in a gigabyte GA-MA 790X-UD4P motherboard with a phenom II processor. At these speeds I was running the mem at a voltage of what I thought was 1.8 volts stock considering I had left the Memory voltage on Normal and when I had placed it on +.1 I had verified it was 1.95 volts in both windows and the bios hardware monitor. I finally decided to see what voltages were at stock and to my surprise the vdimm read 2.05 at Normal, which should have been 1.85 if it was .1 less than the 1.95 I had read earlier (at the 1.9 vdimm setting) Anyway why exactly would this board (or any motherboard, give the memory 2.05 volts at normal and 1.95 volts at +.1 volts. I dont really understand this at all and are the normal voltages somehow read off of the spd?????? any insight would be appreciated.

[18 is # 1]

I've seen several instance of those being left on "auto" and the mobo defaulting to about 2.1-2.2v
Not sure if this is an SPD problem or what....

[velozzity]

18 is #1, I believe at extremesystems you had done some benching on the Low Volt 1066 OCZ memory, Do you feel in your opinion that I am going to eventually fry the memory even If I set it at the +.1 setting which gives me 1.95v???????????. I really dont want to invalidate the warranty either and It looks like this memory is just flat out incompatible (although should be by advertised specs and displayed bios adjustments per gigabyte), Would It be a better option for me to return this for this product http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4610262&CatId=2261, looks like this goes to 1150mhz stock, is lower priced than the memory that I have now, and has comparitable timings, only uses 2.2 volts which my old platinum rev2's 800mhz used, which is not a problem on this board

[18 is # 1]

How hot are they getting?
Is there any way to set it to zero or a negative number?
Do you have good airflow around the sticks? (My Antec front fans are partially blocked by HD and Floppy)

Also you might PM Acoma_Andy : http://www.overclock.net/intel-memory/511351-ocz-blade-lv-ddr2-1261mhz-5-a.html

[velozzity]

actually my hard drive is in the bottom of the case and I have a fan blowing across the ram at a 90degree angle with minimal obstruction. I have however after talking to ryderocz @ ocz forums and him verifying that he could not advocate me using anything more than 1.9v for long term, I decided to go with the 1500mhz ocz titanium's. They have same timings as the ocz blades, were a little cheaper, and needed 2.2volts with 2.25 volt evp warranty. Although it is screwy my motherboard does properly set voltages above 1.9 fine except for each have a +.05volt offset (1.9 bios is 1.95 actual). Dont know why normal setting in bios pushes 2.05 volts but +.1 (which you would assume to give 2.15) gives 1.95. Something seems wrong with bios on this board and as usual gigabyte gave me a generic check this check that answer the same as when I asked a few months back (you might recall the questions I had about Corsair dominators doing 1200mhz) why the 4gb kit which was supposedly supported would'nt pass any stress test above 900 mhz. I am kinda thinking this board got looked over in the memory support area plus why does'nt every board give you like .025 increment for settings instead of .1. Anyway if anyone still has any experience in these problems please feel free to post because I am wondering If I should be RMA'ing my motherboard because some type of voltage regulator is whack or what not.

[velozzity]

UPDATE:

Seems the finger pointing has begun, Motherboard manu. states that in effect the normal setting in my bios (even though I have changed voltages from auto to manual to allow tweaking of cpu and chipset voltages) is equivalent to auto and somehow either the spd is not being read correctly or is wrong (but cpu-z listed it at 1.8)

Memory manu. stated there is no way the memory can effect what it sets as default voltages even though in a trial and error test I saw that changing memory sticks resulted in 3 different "normal" voltages and the only one which would give 1.85v (within tolerances allow by motherboard manu. for memory voltage) was a mongrel set of ddr 533 that was 1 stick crucial and 1 stick pny rated for 1.8 volts.
Who to believe???????????????????????????????????????

UPDATE: QUESTION FOR THE MASSES: Is DDR2 memory autovoltage somehow set by the Jedec Profile, and if such do some motherboards not know how to properly read profiles (e.g. the low voltage memory had a jedec profile of 555 mhz and 1.8 volts, considering that is a non supported speed for my motherboard, could somehow the board not know where to autoset voltage hence the overvoltage)