Asus Z97 + Intel Core i7-4790K *** 5-Way Optimization Question ***

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mkanet

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I have an Asus Z97 Deluxe Motherboard + Intel Core i7-4790K CPU + 32GB's of 1666Mhz RAM. My understanding is that the CPU (and respective cores) should operate between 4.00Ghz - 4.4Ghz.

However, after I run the Asus 5-Way optimization tuning process (including RAM testing), it automatically configured my CPU cores to operate anywhere from 800Mhz... all the way up to 4.9GHz (4900Mhz)!! Bus = 100MHz (Multiplier 8 - 49). I didn't even know my CPU could have all it's cores simultaneous run at 4.9GHz (far beyond 4.4Ghz). Asus 5-way optimization seems to think so. In fact, I ran it again, both times, it chose the same settings.

Can I actually depend on Asus's 5 way automatic optimization to reduce CPU frequency automatically if it detects it's approaching an unsafe temperature?


 
Solution
JimF_35


No the Thermal Junction Max is the point were a CPU will start underclocking to protect its self. You would have to run the CPU at 100c...
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JimF_35

JimF_35

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The only way to know for sure is to stress test your system. Run Prime95 along with a temperature monitoring system and see what your temps are. If the temps look good leave the stress test running for like 2-4 hours to see if your system crashes.

You might have won the silicon lottery. Lucky dog.
 
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mkanet

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Thanks for the reply. I thought that's the whole point of Asus 5way dynamic auto tuning... which automaticaly adjusts individual core speed, voltages, etc... if temperature gets too hot.

Maybe, you meant I could run Prime95 just to confirm Asus Automatic tuning is working correctly?

What operating temperature should the CPU cores not exceed? Is anything below 80C considered safe? Or, 70C? I think Asus autotuning may have those limits already set.

Thanks in advance!!








 
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mkanet

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Man, I hope I didn't screw anything up!

I ran Prime95 default torture test. RealTemp reported my CPU reached 100c after just 4-5 seconds. The Prime95 torture test ran my CPU at 100c for about another 4-5 before I stopped the test.

Would this test (which lasted a total of 10 seconds) cause any kind of damage to my CPU (or reduce it's life expectancy)? I feel really bad that I even attempted this kind of test on my brand new expensive CPU.

After I did this, I quickly uninstalled the Asus 5way optimization software; so CPU will operate at default 4.00Ghz- 4.4Ghz (which doesn't go beyond 70c).
 
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JimF_35

JimF_35

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No the Thermal Junction Max is the point were a CPU will start underclocking to protect its self. You would have to run the CPU at 100c for a couple hours if not days before any real damage would happen so you are ok.

This is the whole point of testing your system even with automatic over clockers. I would run the overclocker then go into your BIOS and start turning the voltage down so that your temps are not so high. If the system becomes unstable then downclcok it a little.

A better way would just not use that software and overclock the system your self. There are plenty of guides out there on how to overclock your system. Youtube is your friend.

https://www.youtube.com/watch?v=QBfXruwe8w4

Hope this helps.
 
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Horrorview

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The Asus 5 Way Opt set my 5820k to 4.8ghz and it was really unstable. I reset to default and set the voltage limit to 1.3 and the overclock limit to 4.5ghz and it worked a treat. I also disabled speedstep and set my power settings to high performance in Windows so that my CPU would run at a constant 4.5ghz as the throttling was killing my performance in CPU-dependent games like Arma 3 and DayZ SA.

The Asus 5 Way Opt is TOO aggressive, imho. I'm content with 4.5 as that's what my 2600k was running at 24/7 on my previous build. The only problem I'm currently having is that my 3000mhz G-Skill DDR4 is currently running at 2366mhz, and I don't really know if I've the headroom to up it to the 3000mhz it's rated for. I may just bypass the 5 Way Opt and do it manually now that I know 4.5 at 1.25 volts is the sweet spot for this particular chip.
 
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