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Overclocking 980x

post #1 of 52
Thread Starter 
I tried overclocking my 980x the other day (my first CPU overclock ever). I am currently running my CPU on water. I was trying to reach something stable that will last me many years but will also get me the best performance. My stats were as follows:

4.4GHz @ 1.35v - 100% Stable
22x Multiplier
200BCLK

Temperatures are quite cool, and I was excited about that. I was happy until I saw this:



Take a look at the NB frequency. Please also note that my QPI Link was at 3.6GHz. Every voltage except for my CPU was set to auto, so I am not sure what it was at. As a first time overclocker, I had no idea if this frequency was too high or too low, for both the NB and QPI. I believe that the stock NB is 2800MHz, though I could be wrong. No clue on the QPI. I do not have any cooling on my motherboard so I was very nervous about this being so high, especially with voltage set to automatic.

I reset my BIOS back to stock and now I'm back to running at 3.33GHz again. Can anyone offer up any help for me to get my CPU back to 4.4GHz without possibly endangering my NB/QPI? I'm not sure on voltages or frequencies.

Any suggestions?
post #2 of 52
3400Mhz QPI isn't that much, the default for the 980X is 3200. If it is stable then you're alright...Can you post what voltages is it using to get to 4.4 and temps on load?
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post #3 of 52
Thread Starter 
Quote:
Originally Posted by matroska View Post
3400Mhz QPI isn't that much, the default for the 980X is 3200. If it is stable then you're alright...Can you post what voltages is it using to get to 4.4 and temps on load?
Thanks for replying. I've been trying real hard to work on this but I don't have the knowledge to start doing it without your help so I really appreciate it.

My temperatures were always cool on water. They ran no higher than 55C on maximum load. Idling anywhere from 15-25C. My QPI was 3.6GHz, the NB was 3.4GHz. I did all the testing before a recent reformat so I don't have the voltages. They were all set to automatic with the exception of the CPU that was at 1.35v. What else should I be looking for?
Edited by xyeLz - 2/22/11 at 5:29pm
post #4 of 52
Other voltages you should look at are VTT/QPI, Dram voltage, IOH.. These volts should not be left on auto because your system might be giving them too much voltage to meet the CPU voltage of 1.35.
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post #5 of 52
Quote:
Originally Posted by Rakhasa View Post
Other voltages you should look at are VTT/QPI, Dram voltage, IOH.. These volts should not be left on auto because your system might be giving them too much voltage to meet the CPU voltage of 1.35.
Rakhasa said it ealrier than me

there is a great guide on 920's and 930's that will also work with your 980X, you just need to change a few settings there to meet your own, like ignoring the multiplier.

To reach 4.4GHz you might use your previous settings of 200*22 @ 1.35V or 1.375V as you said it was stable like this. Just be sure to monitor the voltages on VTT/QPI to stay between 1.2-1.35V, IOH and ICH at 1.3V, RAM voltage @1.65V (don't forget to monitor the RAM speed ratio/multiplier also so they won't exceed by much their "natural" speed when increasing the base clock), and temps on load below 70ºC...

Just for a test you may se it to the old settings @ 4.4GHz and monitor how are the voltages on auto. If they aren't much higher you may leave them as they are.

Here's the guide: http://www.overclock.net/intel-cpus/...920-930-a.html

it is not for your specific CPU, but will cover up some other settings that you may not be very familiar with.
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post #6 of 52
Thread Starter 
What about my QPI and NB speeds? I know they will automatically raise if I increase the bus speed but is 3.4GHz NB normal? Is there a way to lower it?
post #7 of 52
Quote:
Originally Posted by xyeLz View Post
What about my QPI and NB speeds? I know they will automatically raise if I increase the bus speed but is 3.4GHz NB normal? Is there a way to lower it?
Yes, you can lower it, both of them, there ratios/multipliers to that effect. If you won't go past the 200MHz base clock you might no need to adjust the QPI and NB speeds, as they shouldn't rise enough to cause your system to hang, 3.4Ghz seems to work for many people here withou any trouble..
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post #8 of 52
Thread Starter 
Okay what if I decided to increase the bus speed to 220MHz with a 20x multiplier? Is that pushing it? What would I have to do to bring down the NB/QPI frequencies and where should I aim to keep them at?
post #9 of 52
This thread is good also..Good luck and have fun with that 980x!!
http://www.overclock.net/intel-cpus/...i5-i7-3-a.html
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post #10 of 52
personally, i wouldn't go too far from the 200MHz base clock, i would start from the default base clock and aiming to max multiplier with stock voltage. After that, more voltage on the CPU and either more multi or base clock. The more you increase base clock, the more you will have to monitor QPI/NB and lower it. I would say that between 3.0 and 3.2Ghz is a safe bet with 1.35V.
4.4GHz is a nice OC on this chip. Further than that may force you to disable HyperThreading to maintain temps reasonable.

See those 2 CPU-z validations:

http://valid.canardpc.com/show_oc.php?id=1568406

http://valid.canardpc.com/show_oc.php?id=1496016

They are using setting s little different from yours, less base clock, more multi, and QPI/NB is lower than stock. you need to try a few diferent settings to achive max OC, or at least a satisfiable one

try no to go very much higher than 3.2GHz QPI/NB, whatever your base clock is, and you should be safe. if system hangs, lower it a little, or lower base clock. Hope this helps buddy keep us posted!
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