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i7 7700k OC'ed to 5GHz but is maxing at 4.8GHz, RAM maxing at 1600MHz when set to 3200MHz

I'm not sure which parts are important to list so I'll just put everything I can think of..

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Motherboard : https://www.newegg.com/Product/Product.aspx?Item=N82E16813128968&ignorebbr=1&nm_mc=KNC-GoogleAdwords-PC&cm_mmc=KNC-GoogleAdwords-PC-_-pla-_-Motherboards+-+Intel-_-N82E16813128968&gclid=EAIaIQobChMIq-PcjY_B1QIVSB6GCh31UwStEAkYASABEgKb7_D_BwE&gclsrc=aw.ds

RAM: https://www.amazon.com/gp/product/B0143UM4TC/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 (3200 MHz version)

CPU : i7 7700k

GPU: GIGABYTE 1080 Ti EVGA

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As said, I went into the BIOS and adjusted the advanced frequency settings for the CPU and memory. There was a prelisted dropdown menu in the "Uprade CPU" option for my BIOS, which listed 5GHz for the i7 7700k which I selected after turning on XMP 1. I also turned on XMP 1 for the RAM which automatically adjusted the frequency to 3200MHz. I also turned off turbo boost as another suggested.

My question is, when I run a stress test, my CPU-Z peaks out at 4.8GHz flat, and for the ram 1600MHz flat. Is there an obvious issue here?

I've read through my motherboard manual several times to no avail.

Also, after making changing in the BIOS when I run some games my PC will crash. It most recently happened when I turned off turbo, so I'll turn that back on and see if it is fixed.
Reply to mbferguson
5 answers Last reply Best Answer
More about 7700k 5ghz maxing 8ghz ram maxing 1600mhz set 3200mhz
  1. Best answer
    Your RAM is supposed to show 1600 in CPUZ, DDR stand for double data rate so you just multiply with 2, so 3200mhz.
    About CPU clock, you should stick with classic method of overclocking, premade overclocking profile is so inaccurate and sometimes dangerous due to high voltage. Going manually you can decrease temperature and overclock even higher, keeping your system cool and quiet, up to you.
    Reply to Makentox
  2. Makentox said:
    Your RAM is supposed to show 1600 in CPUZ, DDR stand for double data rate so you just multiply with 2, so 3200mhz.
    About CPU clock, you should stick with classic method of overclocking, premade overclocking profile is so inaccurate and sometimes dangerous due to high voltage. Going manually you can decrease temperature and overclock even higher, keeping your system cool and quiet, up to you.


    I've looked at some guides and youtube videos, but it still seems pretty complicated to me. I downloaded GIGABYTE EasyTune, which has this "advanced CPU" section:

    http://imgur.com/a/4xLAN

    Which options should be changed in this? Also, is there another overclocking software that's better than EasyTune because it seems pretty jankedy sometimes. It seems that the options shown in that picture also differ a little from what I see in the BIOS.
    Reply to mbferguson
  3. Overclocking the 7700k manually is not hard since you can change 2 parameters.

    1. The ratio: set it to 50

    2. Vcore: set manually to 1.350

    And you should be set to go at 5ghz. Just make sure your cpu can handle it since not all 7700k can go to 5ghz.
    Now if you can go to 5ghz at Vcore 1.350 try to lower the Vcore to 1.300 and run a stress test again for 10-15 minutes and check if it stable. If it is try to go down again on Vcore to something like 1.290 and keep going until the system freeze up. When it does, go up on Vcore by 0.010 or 0.015 and run a longer stress test. Watch temps.

    I am running my 7700k at 5ghz @ Vcore 1.312 since that also keeps it stable under AVX loads.

    Try not to go over 85 degree celcius on cores.
    Reply to lumineZ
  4. lumineZ said:
    Overclocking the 7700k manually is not hard since you can change 2 parameters.

    1. The ratio: set it to 50

    2. Vcore: set manually to 1.350

    And you should be set to go at 5ghz. Just make sure your cpu can handle it since not all 7700k can go to 5ghz.
    Now if you can go to 5ghz at Vcore 1.350 try to lower the Vcore to 1.300 and run a stress test again for 10-15 minutes and check if it stable. If it is try to go down again on Vcore to something like 1.290 and keep going until the system freeze up. When it does, go up on Vcore by 0.010 or 0.015 and run a longer stress test. Watch temps.

    I am running my 7700k at 5ghz @ Vcore 1.312 since that also keeps it stable under AVX loads.

    Try not to go over 85 degree celcius on cores.


    I'll try this out. Thanks for the response.
    Reply to mbferguson
  5. I just wanted to leave an update...

    The end issue which was causing my CPU-Z to show a multiplier of 4-48 (only 4.8GHz max) when I had set the CPU ratio to 50 was a driver problem. I updated the bios and my motherboard's drivers and it fixed the problem.
    Reply to mbferguson
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