All Memory Fails Memtest, Please Help - Page 4 - Overclock.net

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post #31 of 46 Old 08-04-2016, 04:20 AM
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@masterdev It is important to have a multi-meter and voltage terminals on your motherboard if you are going to try this out. My ram will idle at 1.676v from the multi meter reading but in bios it's set to 1.64v, under gaming load it drops to 1.674v. Now do you see why it's important to use a multi-meter to test your voltages? And the most important thing I mentioned was NOT to have the VTT and dimm volts > (greater than) .50v e.g. my CPU VTT is 1.250v (it defaults to 1.20 and I added +50mV = 1.250v) My ram needs 1.674v for stability. The difference is 0.424v which is < .50v. The other important thing I mentioned was NOT to go over 1.350v CPU VTT (mine is 1.250v)

EDIT: recent overclocking has pushed my CPU Vcore to 1.356v for 4.51GHz stability. It idles at 1.346v and under IBT load it pulls 1.363v, gaming ~ 1.349v



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post #32 of 46 Old 08-04-2016, 06:28 PM - Thread Starter
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@OCmember I know that this is the more accurate way of measuring the voltages, but I don't have a multimeter.

I tried your voltage suggestions, but nothing worked.

I tried building stable normal clock speed from the following settings and nothing!

Multi x28
BCLK 133
DRAM 1333MHz
UCLK 2666
QPI Link Data Rate 4800MT/s

DRAM Timing 9-9-9-24 1N

QPI/DRAM 1.3 - I started building from 1.2 in voltage increments by 0.025v.
IOH Voltage 1.16

Couldn't boot even once. confused.gif
I reset the BIOS to the defaults and nothing. Only BSODs or black boot screens.

The more I know, the more I don't know.
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post #33 of 46 Old 08-04-2016, 06:58 PM
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Awe man that sucks. Sounds like something isn't working frown.gif

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post #34 of 46 Old 08-04-2016, 07:05 PM - Thread Starter
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Quote:
Originally Posted by OCmember View Post

Awe man that sucks. Sounds like something isn't working frown.gif
Yeah. The CPU is doomed! biggrin.gif
That 24/7 system run... mad.gif

I will have to switch to the i7-920 guitar.gif

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post #35 of 46 Old 08-04-2016, 07:14 PM
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Quote:
Originally Posted by masterdev View Post

Yeah. The CPU is doomed! biggrin.gif
That 24/7 system run... mad.gif

I will have to switch to the i7-920 guitar.gif

Yeah, I think that 1.40v VTT probably killed it. Sorry man,

Good Luck! smile.gif

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post #36 of 46 Old 08-04-2016, 11:39 PM - Thread Starter
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Quote:
Originally Posted by OCmember View Post

Yeah, I think that 1.40v VTT probably killed it. Sorry man,

Good Luck! smile.gif

Thanks mate.
It's unfortunate. Now I will sniff for deals on eBay for X5680 and X5690. I must have one biggrin.gif

Meanwhile running my old i7-920 at 3.6G.

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post #37 of 46 Old 08-05-2016, 07:24 AM
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Just remember with those Xeons that the max stated Intel safe vcore is 1.350v, not 1.375v with the W series, AND they only have a max memory multiplier for 1333MHz

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post #38 of 46 Old 08-05-2016, 04:10 PM - Thread Starter
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Thanks. I'm planning on getting the X series. I'm done with W. biggrin.gif
I see that you're running an X5690, how's that one?

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post #39 of 46 Old 08-05-2016, 04:56 PM
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Bought it from a server. Never overclocked it. It's in pristine condition! biggrin.gif

The W3690 is fantastic for overclocking. I just wish my board would allow the multi to go above 26. I'm sure my Gigabyte UD7 Rev2 would allow it.

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post #40 of 46 Old 08-05-2016, 10:45 PM - Thread Starter
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Did you buy it from eBay. Is there other place to look at that you could recommend?

The W3690 runs extremely hot for me. It was very hard not to load it fully and cool down. The specs temperature threshold is very low compared to the "X".

I might go with either X5680 or X5690.
Compared i7-980x runs at 67.9°C, X5680 runs at 78.5°C, which is awesome and the Xeon supports higher bandwidth.

What clock are you running the memory at? I've heard that the "W" series can't run the memory stable at over 1333MHz, is it true? Is it the same with the "X"?
I'm planning to buy memory soon. Do you know, if the "X" series would support 16GB modules? I really would like to try 4 x 16GB. biggrin.gif

I know that the i7-980x runs 48GB memory on the x58 chipset.

EDIT: My motherboard is P6T7 WS SuperComputer with dual NForce 200. No problems so far. Rock solid.

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