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Hello everyone, I recently bought an i7 4790k and an ASUS VII Hero Z97. I am new to monitoring software and downloaded CPU-Z and CPUID HWMonitoring. Problem is when I open CPU-Z my CPU Core speed varies from 800 MHz to 4000 MHz and is rarely at what it should be which is a base clock of 4000 MHz. Does this mean my system is unstable and something is wrong? If so how can I fix it

 

Should my CPU be running at 4000 MHz for "Core Speed" on CPU-Z constantly and never vary? 

 

Does this something is wrong with my system if it isn't running at 4000 MHz at a constant rate?

 

In the BIOS it shows that it's running at 4000 MHz so I'm just confused.

 

I also have 32 GB of Corsair Dominator @ 2400 MHz stock, and in the Memory Tab of CPU-Z it shows my DRAM Frequency at 1199.8 MHz. These are dual channel kits by the way. 

 

Sorry I'm a noob when it comes to this kind of thing, thanks for any help you can give me  :)

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Hello everyone, I recently bought an i7 4790k and an ASUS VII Hero Z97. I am new to monitoring software and downloaded CPU-Z and CPUID HWMonitoring. Problem is when I open CPU-Z my CPU Core speed varies from 800 MHz to 4000 MHz and is rarely at what it should be which is a base clock of 4000 MHz. Does this mean my system is unstable and something is wrong? If so how can I fix it

 

Should my CPU be running at 4000 MHz for "Core Speed" on CPU-Z constantly and never vary? 

 

Does this something is wrong with my system if it isn't running at 4000 MHz at a constant rate?

 

In the BIOS it shows that it's running at 4000 MHz so I'm just confused.

 

I also have 32 GB of Corsair Dominator @ 2400 MHz stock, and in the Memory Tab of CPU-Z it shows my DRAM Frequency at 1199.8 MHz. These are dual channel kits by the way. 

 

Sorry I'm a noob when it comes to this kind of thing, thanks for any help you can give me  :)

Cpuz only shows half the ddr ram, ie if you have 2400mhz it will show 1200mhz or 1199.8mhz, double what cpuz shows and that is the speed your ram is running. Just the way cpuz works. And your processor adjusts the speed based on usage, you barely use it it lowers the speed. When it needs more power it ramps it, does this to save power. You can disable it in the bios by turning off turbo boost or setting a manual overclock of 4ghz. It doesn't reach the 4ghz speed because you aren't doing anything so intensive it needs to be that fast...

 

@H4X3R beat me by a hair :P

My Rig :  Case: Cooler Master HAF X ,Motherboard: Gigabyte Z87X-UD3H,PSU: Seasonic SS-750KM3,Processor: Core I7 4770k (overclocked 4.7ghz),Cooler: Corsair H100i, GPU: EVGA GTX 780 with acx cooler, RAM: G.Skill Ripjaws 16gb DDR3 1600 (overclocked to 2000mhz), HDDS  Samsung 840 EVO 250 gb SSD , Western digital  2tb 7200 rpm 64mb cache, Old 1tb laptop drive I had , 320gb for os backup daily, 80gb external for weekly backups,Drives 2x Lg Blu Ray burner WH16MS40,MISC: Tp-Link dual band wireless card, Logitech g510s, Razer Deathadder 2013, Acer G236HLBbd 23" monitor, Old tv I had 23" for secondary monitor, old 32" samsung tv third monitor

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-snip-

 

CPU speed varies when you're not doing anything, this is a power saving feature which can be disabled in BIOS if you so desire.

 

As for the dram speed, its dual channel. 1200x2=2400. It's all good.

 

 

 

double_facepalm.jpg

 

He's not the one with the most expensive ROG 990fx board and no overclock what-so-ever.

Silly person.

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double_facepalm.jpg

 

It changes frequewncy automatically to save power. If you want to put it off, enter the BIOS and then put off intel turbo boost (and other settings) or manually override it by "overclocking" it to 4.0 ghz in manual mode.

Thanks man appreciate the help, what would you recommend? Is it worth it to turn it off and get the performance of 4000 MHz all the time? 

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Thanks man appreciate the help, what would you recommend? Is it worth it to turn it off and get the performance of 4000 MHz all the time? 

No. Leave it on. When playing games or doing other stressful tasks it will automatically boost to 4000 mhz. It helps you save power and doesn't affect performance (as it ramps up anyway if needed).

Spoiler

Samung Tab S 8.4

 

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Thanks man appreciate the help, what would you recommend? Is it worth it to turn it off and get the performance of 4000 MHz all the time? 

If you leave it at 4000mhz all the time, it's just going to run hotter at indle and waste power. There is no need to set it to 4ghz 24/7. When it needs the power, it will boost up the clock to handle the task, there is nothing wrong with it changing it's speeds.

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