Computer randomly resets - yea, it's memorysan again

[eriku]

O.K., I tried setting everything to the settings shown in the link I posted above (I hadn't set the voltages or timing before) and it didn't change anything. I also tried setting the memory voltage to 1.65V and the timing to 8-8-8-24 with everything else set to default (even the speed of the memory with memory and uncore multipliers both at auto, default memory speed = 1067MHz) and it didn't help.

Any other ideas?...or should I just wait for Touge to come over and help me?

I was kinda hoping to have this fixed so he could help me with overclocking when he gets back.

ey MemorySan,

It looks that you've done some pretty cool research .... I will definitly take a look at the voltages again, still
nobody knows that MoBo better that Erik. I strongly suggest you wait till he hits your place and help you out ---

You don't want any chip damage, rite?!

eriku

[Patriot]

should I just wait for Touge to come over and help me?

lol pretty much

im out of ideas and dont have an i7 rig to play with right now...

[Memorysan]

O.K., I did a little research on overclocking i7s just to try to learn a thing or two and came across some voltage information for i7 920:

Processor core voltage: 1.2V nominal, 1.55V max (water cooling required to take it that high)
Uncore voltage: 1.2V default, 1.35V max without harm to processor
Memory voltage: 1.65V max (memory is rated for 1.65V according to the specs. on Newegg)
CPU PLL voltage: 1.80V nominal, 1.88V max without harm to processor

Here are some things I have tried (none of them stopped the resets):

Uncore voltage: +100mV (not really sure what this ends up being as far as actual voltage, but if it's 1.2V (default) +100mV wouldn't that be 1.3V? Don't really know how it works, but +100mV was recommended by the link above when I was setting things for memory)

Memory voltage: 1.65V (This is the max and since I was trying to make the memory stable earlier, it was recommended by the site I linked above, and the memory is rated for it...I tried it.)

CPU PLL voltage: 1.87V (The next interval was above 1.88 so I didn't want to risk it)

Processor Core Voltage: I haven't changed it yet. Default is .93750V (where it says "CPU Target Core Voltage").

I read that nominal voltage for an i7 920 Processor is 1.2V. If it's sitting at .93750V by default could this mean that the processor isn't getting enough voltage and that is causing the resets due to instability?

I looked at the drop down menu for changing it from default and it's all +XXmV (XX being the different choices +10mV increments with +1260mV max). I don't want to mess with this until I know what I'm doing, but it seems like .93750V is low when nominal is 1.2V. Could this be the problem? If so, what would I change the default to...+300mV? That would change it from .9V to 1.2V (maybe?) if that is how it works. I'm afraid of slamming the processor with too much voltage and frying it, so I am holding off for now.

The link I keep referring to shows the default at 1.26875V.

Have I found a possible culprit? Should I adjust the processor core voltage to +300mV bringing it up to 1.23750V (or maybe +400mV for more stability, would that take it to 1.33750V)?

[Touge180SX]

Memory, is it blue screening at all or just restarting?

[Memorysan]

Just restarting. It drops out of nowhere and starts back up. Sometimes it will restart several times in a matter of seconds, other times it will last a couple of minutes before it restarts. There have been a few times it lasted several minutes. I never see a blue screen, though, it just drops and restarts.

What do you think about the processor voltage? I'm eager to try changing it to +300mV or +400mV but waiting for someone to tell me I'm not going to fry the CPU by doing it.

[Touge180SX]

As long as you keep it below 1.3V or so you should be more than fine. Try it and keep an eye on the temps. I've had mine up to 1.55V with no problem on water.

[Ryan]

O.K., I did a little research on overclocking i7s just to try to learn a thing or two and came across some voltage information for i7 920:

Processor core voltage: 1.2V nominal, 1.55V max (water cooling required to take it that high)
Uncore voltage: 1.2V default, 1.35V max without harm to processor
Memory voltage: 1.65V max (memory is rated for 1.65V according to the specs. on Newegg)
CPU PLL voltage: 1.80V nominal, 1.88V max without harm to processor

Here are some things I have tried (none of them stopped the resets):

Uncore voltage: +100mV (not really sure what this ends up being as far as actual voltage, but if it's 1.2V (default) +100mV wouldn't that be 1.3V? Don't really know how it works, but +100mV was recommended by the link above when I was setting things for memory)

Memory voltage: 1.65V (This is the max and since I was trying to make the memory stable earlier, it was recommended by the site I linked above, and the memory is rated for it...I tried it.)

CPU PLL voltage: 1.87V (The next interval was above 1.88 so I didn't want to risk it)

Processor Core Voltage: I haven't changed it yet. Default is .93750V (where it says "CPU Target Core Voltage").

I read that nominal voltage for an i7 920 Processor is 1.2V. If it's sitting at .93750V by default could this mean that the processor isn't getting enough voltage and that is causing the resets due to instability?

I looked at the drop down menu for changing it from default and it's all +XXmV (XX being the different choices +10mV increments with +1260mV max). I don't want to mess with this until I know what I'm doing, but it seems like .93750V is low when nominal is 1.2V. Could this be the problem? If so, what would I change the default to...+300mV? That would change it from .9V to 1.2V (maybe?) if that is how it works. I'm afraid of slamming the processor with too much voltage and frying it, so I am holding off for now.

The link I keep referring to shows the default at 1.26875V.

Have I found a possible culprit? Should I adjust the processor core voltage to +300mV bringing it up to 1.23750V (or maybe +400mV for more stability, would that take it to 1.33750V)?

If you want the resets to stop try setting the Uncore/cpu vtt to 1.35 volts. The ratio has to be this if your memory voltage is set to 1.65 or 1.66. I had to figure this out myself along with loads of reading.

"QPI/DRAM Voltage - 1.35V: This is poorly worded by Asus - it should read uncore or QPI/memory controller voltage so not to confuse it with the actual memory voltage. Increasing this is also necessary as it helps overclock the base frequency as the uncore area overclocks increase in relation to the CPU core overclocks. This voltage is tied to actual DRAM voltage - the two are directly connected on the motherboard. You’ll need to increase this to keep the CPU safe. …. keep the CPU uncore voltage within 0.5V difference of the DRAM voltage and there’s no problem."

[Memorysan]

O.K., I tried setting the processor voltage to +300mV which brought the CPU voltage up to 1.23750V and the resets slowed down but didn't stop (don't know if I actually helped the situation or if it just decided to slow down in that point of randomness).

Since it slowed down, I tried upping the voltage a little more to +350mV bringing up the CPU voltage to 1.28750. I was still getting resets, and didn't want to go any higher because Togue said to keep it under 1.3V. The numbers are in red after +300mV which must be a warning that I'm setting it pretty high.

After that, I tried setting all the voltages up a little to the following:



Still no joy!

Ryan, I have a question. Your quote says "keep the CPU uncore voltage within 0.5V difference of the DRAM voltage and there’s no problem" Isn't 1.2 within 0.5 of 1.65? I have tried it at 1.3 and it didn't help either. I will try setting the uncore to 1.35 and the memory at 1.6 (default) and 1.65 to see if there is any change.

Of course, all of what I think I have the uncore voltage set to is a guess. I'm guessing it is defaulted to 1.2V and that +100mV is setting it to 1.3V. I set it at +100mV because that is what was shown on the web page I saw that said what to set the memory to for my memory vs. my motherboard. Of course that page had the CPU voltage defaulted at 1.26875V and mine defaults at .93750V. I could be WAY off on what I am setting the uncore voltage to and have no idea because this darn BIOS doesn't actually show what the uncore voltage is set to...it just shows the options to change it to which are "Auto" or +XXmV (XX being the increments I can change the voltage to in +something).

Touge, is there any way to see what the actual uncore voltage is set at in this BIOS instead of just auto or + something adjustments? This could make a big difference, and could possibly be my problem.

By the way, I set everything back to Optimized Defaults after I try each of these voltage setups so that I am sure not to leave something in place that didn't work or could be damaging.

Should I enable Vdroop Compensation? Would this have a chance to help me? How about CPU Clock Amplitude Control? I haven't read much on these yet.

[Patriot]

there should be a health monitor in there that will read the voltages as they were set last reboot...

O.K., I tried setting the processor voltage to +300mV which brought the CPU voltage up to 1.23750V and the resets slowed down but didn't stop (don't know if I actually helped the situation or if it just decided to slow down in that point of randomness).

Since it slowed down, I tried upping the voltage a little more to +350mV bringing up the CPU voltage to 1.28750. I was still getting resets, and didn't want to go any higher because Togue said to keep it under 1.3V. The numbers are in red after +300mV which must be a warning that I'm setting it pretty high.

After that, I tried setting all the voltages up a little to the following:



Still no joy!

Ryan, I have a question. Your quote says "keep the CPU uncore voltage within 0.5V difference of the DRAM voltage and there’s no problem" Isn't 1.2 within 0.5 of 1.65? I have tried it at 1.3 and it didn't help either. I will try setting the uncore to 1.35 and the memory at 1.6 (default) and 1.65 to see if there is any change.

Of course, all of what I think I have the uncore voltage set to is a guess. I'm guessing it is defaulted to 1.2V and that +100mV is setting it to 1.3V. I set it at +100mV because that is what was shown on the web page I saw that said what to set the memory to for my memory vs. my motherboard. Of course that page had the CPU voltage defaulted at 1.26875V and mine defaults at .93750V. I could be WAY off on what I am setting the uncore voltage to and have no idea because this darn BIOS doesn't actually show what the uncore voltage is set to...it just shows the options to change it to which are "Auto" or +XXmV (XX being the increments I can change the voltage to in +something).

Touge, is there any way to see what the actual uncore voltage is set at in this BIOS instead of just auto or + something adjustments? This could make a big difference, and could possibly be my problem.

By the way, I set everything back to Optimized Defaults after I try each of these voltage setups so that I am sure not to leave something in place that didn't work or could be damaging.

Should I enable Vdroop Compensation? Would this have a chance to help me? How about CPU Clock Amplitude Control? I haven't read much on these yet.

[Ryan]

O.K., I tried setting the processor voltage to +300mV which brought the CPU voltage up to 1.23750V and the resets slowed down but didn't stop (don't know if I actually helped the situation or if it just decided to slow down in that point of randomness).

Since it slowed down, I tried upping the voltage a little more to +350mV bringing up the CPU voltage to 1.28750. I was still getting resets, and didn't want to go any higher because Togue said to keep it under 1.3V. The numbers are in red after +300mV which must be a warning that I'm setting it pretty high.

After that, I tried setting all the voltages up a little to the following:



Still no joy!

Ryan, I have a question. Your quote says "keep the CPU uncore voltage within 0.5V difference of the DRAM voltage and there’s no problem" Isn't 1.2 within 0.5 of 1.65? I have tried it at 1.3 and it didn't help either. I will try setting the uncore to 1.35 and the memory at 1.6 (default) and 1.65 to see if there is any change.

Of course, all of what I think I have the uncore voltage set to is a guess. I'm guessing it is defaulted to 1.2V and that +100mV is setting it to 1.3V. I set it at +100mV because that is what was shown on the web page I saw that said what to set the memory to for my memory vs. my motherboard. Of course that page had the CPU voltage defaulted at 1.26875V and mine defaults at .93750V. I could be WAY off on what I am setting the uncore voltage to and have no idea because this darn BIOS doesn't actually show what the uncore voltage is set to...it just shows the options to change it to which are "Auto" or +XXmV (XX being the increments I can change the voltage to in +something).

Touge, is there any way to see what the actual uncore voltage is set at in this BIOS instead of just auto or + something adjustments? This could make a big difference, and could possibly be my problem.

By the way, I set everything back to Optimized Defaults after I try each of these voltage setups so that I am sure not to leave something in place that didn't work or could be damaging.

Should I enable Vdroop Compensation? Would this have a chance to help me? How about CPU Clock Amplitude Control? I haven't read much on these yet.

On the memory if we take say my board by default my memory voltage is 1.5 so the uncore being @ 1.2 would be right. But if i move the memory voltage up to 1.66, then i need to also up the cpu vtt / uncore to 1.35 or 1.4


You shouldnt have any problem getting the cpu to hit 4.0ghz with 1.30 volts. i have mine folding linux vm machime @ 3.95ghz on 7 out the 8 threads and 3 video cards hammering at it everyday. Givin im using water cooling i still got the cpu to do 4.3ghz @ 1.36 volts and benchmarked.