- Nov 9, 2011
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I just got my i7 980X a few days ago and I am having some issues overclocking. I have read the overclocking review on Tom's and they show how you can go as high as 4.4GHz with as little as about 1.289Vcore
http://www.tomshardware.com/reviews/core-i7-980x-efficiency,2590-4.html
What they don't show is running any kind of stress test at that voltage. Other overclocking guides show voltages around the 1.35V range for 4.4GHz I had mine set to 4.2GHz and I can boot just fine with as little as 1.3V. When I try to run prime95, my system crashes until I hit the chip with a Vcore of 1.4. At that voltage, I immediately lose 2cores due to errors but the other 4 cores and 6 threads keep on running with no issues. I need to pump as much as 1.45V into it to be able to run prime95 but after 6 or 7 minutes I lose one of the cores due to an error. At 4.2GHz and 1.48V, I ran prime95 for about 45minutes with no errors and my coretemps ranged from 68 up to 74 degrees. I had my old i7 965X running at 4.0GHz with a Vcore of 1.4125 full time and it was rock solid but even that voltage seemed a bit too high. I currently have my 980X set to 4.0GHz with a Vcore of 1.425 in order to run prime95 stable. If I drop the Vcore to 1.4 I will lose one core after 2 or 3 minutes. After all the research I did before I bought the 980X, I thought I would be able to run higher clocks at a lower temperature with lower Vcore. So far, I can hit higher clocks at lower temperatures but I still need to pump up the Vcore in order to run prime95 with no errors. It's too bad none of the overclock guides that I have read used prime95 to test the stability. They all focused on benchmarking performance after overclocking.
What I am wondering is:
1. How high do you guys run your Vcores 24/7?
2. Should I really put all my faith in prime95? Afterall, it pushes a cpu well beyond what everyday use will do.
3. Is there a better stress test that I should be using?
4. Would be more realistic to use benchmarks as a test of my overclock?
http://www.tomshardware.com/reviews/core-i7-980x-efficiency,2590-4.html
What they don't show is running any kind of stress test at that voltage. Other overclocking guides show voltages around the 1.35V range for 4.4GHz I had mine set to 4.2GHz and I can boot just fine with as little as 1.3V. When I try to run prime95, my system crashes until I hit the chip with a Vcore of 1.4. At that voltage, I immediately lose 2cores due to errors but the other 4 cores and 6 threads keep on running with no issues. I need to pump as much as 1.45V into it to be able to run prime95 but after 6 or 7 minutes I lose one of the cores due to an error. At 4.2GHz and 1.48V, I ran prime95 for about 45minutes with no errors and my coretemps ranged from 68 up to 74 degrees. I had my old i7 965X running at 4.0GHz with a Vcore of 1.4125 full time and it was rock solid but even that voltage seemed a bit too high. I currently have my 980X set to 4.0GHz with a Vcore of 1.425 in order to run prime95 stable. If I drop the Vcore to 1.4 I will lose one core after 2 or 3 minutes. After all the research I did before I bought the 980X, I thought I would be able to run higher clocks at a lower temperature with lower Vcore. So far, I can hit higher clocks at lower temperatures but I still need to pump up the Vcore in order to run prime95 with no errors. It's too bad none of the overclock guides that I have read used prime95 to test the stability. They all focused on benchmarking performance after overclocking.
What I am wondering is:
1. How high do you guys run your Vcores 24/7?
2. Should I really put all my faith in prime95? Afterall, it pushes a cpu well beyond what everyday use will do.
3. Is there a better stress test that I should be using?
4. Would be more realistic to use benchmarks as a test of my overclock?
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