Overclock i7 7700K with Phanteks TC12DX

I have recently bought an i7 7700K which is running on an MSI Z270 Gaming M5 board. It is being cooled by a Phanteks PH-TC12DX. I am interested in achieving a little bit of overclocking from this rig. Is it actually possible to get something out of it? If so then what would be the safe spot? Also, do you guys recommend the software overclocking through the MSI app?

Thanks in advance.
Reply to Nahiyan
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More about overclock 7700k phanteks tc12dx
  1. You cannot overclock a CPU through "the MSI app". You need to go in BIOS and usually change only the multiplier and voltage if needed.
    Safe spot would be when your temperatures reach around 80C, I wouldn't go higher than that. Also, do thorough tests after each increment, like 30 mins of Prime95 to test stability.
    Reply to lakimens
  2. lakimens,
    You aren't completely correct.

    MSI provides two different Windows utilities which can allow overclocking:
    1) MSI X-Boost
    2) Intel Extreme Tuning Utility

    Overclocking can also done in the BIOS.

    I do agree that I wouldn't allow the CPU to go over 80degC often to increase the lifespan of the CPU.

    There are a number of overclocking guides available if you GOOGLE as well, and personally I would stick with the BIOS methods and tweak to optimize as usually it's more power efficient to do so.

    And yes, simply raising the multipliers and voltage is one option. On my i7-3770K I only raise my multipliers until things become unstable. I didn't bother with voltage as that, for my system at least, caused a HUGE increase in temperature (voltage affects temperature more than frequency, so if you can get away with raising the frequency and NOT the voltage then you should not raise the voltage. However, sometimes you need to add just a little more voltage and if the TEMPERATURE under load stays good then fine.).

    PRIME95 is okay for testing but it's more stressful than even demanding real-world scenarios so I'd look at 80degC worst-case using something like HANDBRAKE (must be running close to 100% for at least 5 minutes).

    Some "CPU" temperature values are actually sensors NEXT to the CPU so make sure you look at the right values. I like to use CORE TEMP myself, but other solutions exist. MSI probably has a good solution for their motherboard (see the MSI motherboard page for list of software).

    I would aim for perhaps 4.6GHz MAX or so under full load (all four cores near 100%). The cooler is okay, but my guess is the cooling potential is limited so MY METHOD of just modifying the frequency and not voltage may be the optimal solution.
    Reply to photonboy
  3. Ooops, sorry, I didn't know about MSI X-Boost.
    Reply to lakimens
  4. Best answer
    Manual overclocking through the bios is usually the preferred route, ez/auto overclocking presets via the motherboard or software tend to be aggressive on the core voltage. They guesstimate what will more than likely be stable rather than what's efficient and each cpu is different. Some may be stable at a given speed using 1.2v vcore, others may take 1.32v vcore to achieve the same overclock. If your actual specific cpu is stable at 1.22v then the additional vcore is just adding to the heat it produces.

    p95 v26.6 is usually the preferred version of prime 95 to run on haswell and newer intel cpu's while running the small fft's test. It's a static load which makes getting temp readings a lot easier than a cyclic or fluctuating test. It is generally more stressful than regular programs which is the point, to provide a worst case scenario. If it were a light load test and the cpu looks ok only reaching 74c it doesn't do much good if by chance you run some real world program more demanding and come to find out it's actually running at 89c under heavy loads.

    Prime is more of a measure for thermals rather than system stability. There are better solutions out there like rog realbench which run a whole suite of stress tests and are more likely to reveal any weaknesses since it stresses the cpu, cpu+ram, gpu, many of the subsystems the way they'd interact in real world programs. It's possible to have a cpu run p95 stable for 30min then run realbench or ibt and have it error out within 5min.

    How far you can oc on that cooler depends on a number of variables. You'll just have to test and slowly increase the oc, slowly increase the vcore in small increments if the oc isn't stable and watch temps under stress tests. Your ambient room temps will play a role, if your pc room is 30c it will be more difficult to keep the cpu cool than a room that's 22c. Case cooling will have an impact, if you only have a single exhaust fan it will be more difficult to keep the cpu cool than if you had several intake and exhaust fans with good case circulation.

    It will depend on your actual cpu, if it's a more 'golden' chip it will oc while using lower core voltage. If you didn't win the silicon lottery it could take a fair amount of core voltage to just get 100-200mhz above stock speeds, or anywhere in between. If your particular cpu has an efficient amount of factory thermal compound between the cores and the ihs (metal cover on the cpu), it will be easier to cool. If it's one that got an extra thick or uneven layer of factory thermal compound under that ihs lid then it may prove difficult to cool or might be a candidate for delidding.

    Each and every one of those variables comes into play determining how well that cooler will work and what sort of oc you can expect to achieve. There's no hard rule for 'use this cooler and you'll absolutely get this overclock in this temp range'. Overclocking can be a roll of the dice and you just won't know until you try and see what results you get.
    Reply to synphul
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