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  1. #1
    Joined
    Mar 2003
    Location
    Rhode Island
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    160

    OC problems. CPU-Z disagrees with bios settings

    This thread started off as "what improvements can I make to play BF1". Its in the Tech Talk forum
    http://forums.pcper.com/showthread.p...375#pst4581375

    But now the problem is more to do with oc. I wanted to oc slightly so I changed the multi from 33 to 37, but cpu-z still reports the multi as 33 and the speed as 3300. There is a section in the bios that shows the multi and speed differently whether or not you're in turbo or non-turbo. in Turbgo its 37 and 3700. in non-turbo its 33 and 3300

    what am i doing wrong? I definitely hit F10 and saved.
    1) i5-2500K cpu, Gigabyte GA-Z68A-D3-B3, MSI GTX 970 GDDR5, 8G Gskill DDR3-1600 PC3-12800, Acer 23", H233H, Win7 64 bit, Corsair 650TX, Xigmatek cooler, Cooler Master CM690

  2. #2
    Joined
    Feb 2004
    Location
    Janesville, Wi
    Posts
    6,409

    Re: OC problems. CPU-Z disagrees with bios settings

    If you still have "speed step" (or whatever intel is call it these days) enabled, at light loads the processor will downclock to stock multiplier

    If you want to force the higher clock speed you have to turn all of the power saving stuff off in the bios, and in windows set your pc to "max performance" mode.


  3. #3
    Joined
    Mar 2003
    Location
    Rhode Island
    Posts
    160

    Re: OC problems. CPU-Z disagrees with bios settings

    OK, i'm pretty sure I disabled the speed step you mentioned but nothing changed. Today I decided to install the overclocking utility EasyTune 6 that was on the disc that came with the mobo. The "tuner" tab gives you 3 choices for oc. No. 1 is 3.6G, No. 2 is 3.8 and No. 3 is 4.1 They are all a 100 MHz. it also shows a default of 3.4G The thing is, when I click on the cpu tab, it is showing 3700 MHz and a multi of 37 Those are the settings that i have in bios, but CPU-Z is still showing 3300 and the multi of 33

    Now I really don't know what going on.
    1) i5-2500K cpu, Gigabyte GA-Z68A-D3-B3, MSI GTX 970 GDDR5, 8G Gskill DDR3-1600 PC3-12800, Acer 23", H233H, Win7 64 bit, Corsair 650TX, Xigmatek cooler, Cooler Master CM690

  4. #4
    Joined
    May 2018
    Posts
    2

    Re: OC problems. CPU-Z disagrees with bios settings

    Hi,

    Just built my first computer and decided to do a little bit of overclocking. I kept the base clock at 100 and set the multiplier to 42, making it 4.2Ghz OC. My OC shows in my BIOS but not in CPU-Z or Windows. Also, I see the OC briefly at 4199.97 in CPU-Z before it goes back down to 799.98. When I use prime95 to stress test along with Real Temp 3.70, it shows 3.5Ghz in real temp along with CPU-Z under max load. Do I need to make some additional changes in my BIOS?

    Plex Kodi Lucky Patcher
    Here are my specs:

    Motherboard: Gigabyte Z97x-Gaming 7
    BIOS version: F6
    CPU: i5 4690K
    CPU COOLER: Noctua NH-D15
    RAM: Corsair vengeance 8GB
    GPU: Gigabyte R9 280x GV-R928XOC-3GD (rev. 2.0)
    PSU: EVGA G2 750W
    HDD(s): Crucial MX100 256GB & WD Black 1TB
    OS: Windows 8.1
    Last edited by kennygarg; 05-16-2018 at 12:09 PM.

  5. #5
    Joined
    Aug 2001
    Posts
    8,034

    Re: OC problems. CPU-Z disagrees with bios settings

    Quote Originally Posted by kennygarg View Post
    Also, I see the OC briefly at 4199.97 in CPU-Z before it goes back down to 799.98.
    This is normal behavior when CPUs are idling. There are multiple clock speeds the CPU can step through at low load levels.

    When I use prime95 to stress test along with Real Temp 3.70, it shows 3.5Ghz in real temp along with CPU-Z under max load. Do I need to make some additional changes in my BIOS?
    I haven't used Real Temp, so I can't speak to the accuracy of its clock speed reporting. I usually use the Performance tab on Windows Task Manager to see the current CPU speed.

    I don't have any experience overclocking the Z87/Z97 platform, so what I'm about to tell you may be wrong! I suspect your overclock is only applying to 1 or maybe 2 CPU cores. I suspect if you run PRIME95 on just one core it will run at 4.2ghz, but when you load all cores it drops to the stock base clock of 3.5ghz. On Gigabyte Z97 boards I believe you need to enable Enhanced Turbo to lock all cores to your specified overclock speed.

    An all-core overclock will run hotter and be less stable at a given clockspeed than a single-core overclock, so I'd back your overclock down a ways before turning on Enhanced, then gradually work it back up.
    If at first you don't succeed, redefine success.

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