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What Am I Doing Wrong!?

Tags:
  • Overclocking
  • Intel
  • Motherboards
  • CPUs
  • Gigabyte
  • DDR4
  • Intel i7
  • Processors
Last response: in CPUs
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a b V Motherboard
a b à CPUs
October 8, 2014 7:47:11 PM

What the hell, guys!?

Gigabyte X99-UD4
i7-5820K
DDR4-2400

I pull up CPUZ and it shows my processor's multiplier from 12-34. Core clock keeps fluctuating back and forth between 1200MHz and 3400MHz.

I've turned off everything I can possibly find in the BIOS that would lower voltage or lower clock speed due to heat and blah blah.

The one thing that I cannot turn off is Spread Spectrum. It's either Auto or from .01% to .50% in increments of .01%. I don't know what's best for that, but I don't think that would affect the core clock.

What am I missing!?

More about : wrong

a b à CPUs
October 8, 2014 7:49:43 PM

Nothing's wrong, the cpu auto-throttles down to conserve power when its idle. If you wish to disable the downclock, go to Power Options, change plan settings, Processor power management and put the minimum processor state to 100%.
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a b à CPUs
October 8, 2014 7:51:01 PM

I would not recommend playing with the BIOS settings, since some are crucial to making the system stable. Such as spread spectrum, as when its disabled, it puts more stress on the VRMs.
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a b V Motherboard
a b à CPUs
October 8, 2014 7:53:47 PM

Noooooo, I've got High Performance Power Plan on with minimum processor state and everything. There's something quirky going on here...
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a b à CPUs
October 8, 2014 7:56:12 PM

When you stress your CPU, it still fluctuates?
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a b V Motherboard
a b à CPUs
October 8, 2014 7:57:12 PM

I haven't tried stressing it yet, because I looked at CPUZ first to see whether the numbers matched what I was setting in the BIOS and noticed that. It stopped me in my tracks.
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a b à CPUs
October 8, 2014 8:00:57 PM

Unless your CPU is dumb (such as the Pentium IV or Athlon), usually the CPU will always downclock itself when Idle...
Im pretty sure everything will be normal when stressing the CPU.
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a b V Motherboard
a b à CPUs
October 8, 2014 8:02:29 PM

I'm gonna stress it tonight, I'll update with the outcome.
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a b V Motherboard
a b à CPUs
October 8, 2014 8:27:51 PM

So, a curious thing happened...

I got the mobo/cpu/ram today at about 2:30pm EST.

I set it up and have been tweaking it since about 4:30pm.

Initially I started slow with a .2GHz increase, and moved up rapidly. Did a little research and found a few people with 1.3V @ 4.4GHz. I said, well, let's shoot for 1.29V @ 4GHz. Kept on getting "failed to boot." "Configuration may not be supported by hardware, etc. etc." and it would give me the option to load the defaults and boot, load the defaults and restart, or enter BIOS. I tried numerous configurations hovering around the 1.275-1.32V range and the 3.8-4.2GHz range and nothing would work.

Finally, I went back to the original .2GHz increase and opened CPUZ. That's when I opened this thread.

Well, I got a bit frustrated and rebooted into BIOS. Loaded the optimized defaults and rebooted into BIOS. There's an option on this mobo for "CPU Upgrade." It has options for 5820K @ 3.8, 4.0, 4.3GHz as well as 5960K and 5930K with the same speeds. I guess it's one of those auto clocking things. I paid no attention to it at first because I believe in manual overclocks.

Low and behold, after loading the defaults and going back into BIOS, I selected nothing other than the 5820K @ 4.3GHz "CPU Upgrade" option. Didn't change anything else.

I am writing to you on that setting right now. I don't know whether that little option does it all for you i.e. ups voltage, ups multiplier or bclk, or what it does. All I know is that it seems stable at the moment. CPUz still fluctuates down to 1200MHz and up to 4300MHz every second, but like you said bloc, it may not fluctuate during stressing. I'm still curious as to why that is happening, though. Hopefully someone can shine some light on that for me.

Will update with results of stressing.
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a b à CPUs
October 8, 2014 8:33:57 PM

The voltage shouldn't change the CPU's overclockability, it only renders it more stable at a certain working overclock. Maybe some of your motherboard settings don't match with the new i5 5xxxK?
You were tweaking with the multiplier, right?
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a b V Motherboard
a b à CPUs
October 8, 2014 8:35:59 PM

I was changing the multiplier and voltage. Overclocking has changed significantly since I first started. There are so many other options you have to worry about now.
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