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In it enough for mid-OC i7 9700k?

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post #1 of 3 (permalink) Old 12-26-2019, 03:54 AM - Thread Starter
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In it enough for mid-OC i7 9700k?

Hi. I'm new to OC, I have i7 9700k and I'm planning to OC it. However I'm not trying to reach as high frequency as possible. It would be fine to me to just lock it for max frequency that is completely safe in temrs of temperatues and TDP. Lets say native turbo technology can give you 4.9 Ghz on 1st Core, and then most of others are on 4.6Ghz. I'm using asus rog strix z390-i gaming motherboard (not shipped to me yet), and as far as I saw from guides and reviews, it seems that with native turbo technology it gives too high voltage. So you have to disable it and set multiplier and voltage manually.

Since it's Mini ITX format, I'm using really small 3.2L case, which only accepts coolers under 65mm height. So, I will use noctua nh-l9x65, which is not really suitable for OC according to official information from Noctua.

I also don't like an idea to enable native turbo technology and just adjusting voltage manually. This way, correct me if I'm wrong, it will use higher frequencies only when needed (which is really dependent on the app I will launch, and how optimized they are, etc), and without overloading it will go with regular 3.6 Ghz.

So that's why to not have too high temperatures, I'm planning to OC up to 4.6 Ghz for all Cores. And as far as I understood, this frequency is kinda officially ok with Intel, cause their turbo boost works on it, so it sounds like it's completely safe.

Is my setup completely fine with this goal? I mean temperatures, and cooler that I use. Or my cooler will not be able to handle it and I'm forced to only go with regular 3.6 Ghz, or updating cooler to smth more powerful (and updating case obviously).

P.S.: 2 * 16 GB RAM will run with XMP with 3200 Mhz.
P.S.2: No GPU.
P.S.3.: With current case I can only use 300W Seasonic power supply. Hope that's fine for such build.

Last edited by Stas Ivanov; 12-26-2019 at 04:09 AM.
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post #2 of 3 (permalink) Old 12-29-2019, 07:28 PM
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The native turbo tech is more generic based on VID values on the CPU, personlized tuning hones in more on the individual silicone you have purchased so you are right in not trusting the onboard o/c, I did my one for lols and for 5ghz which i can get stable at 1.37vcore, wanted to push 1.48v through it although I have heard this tec is getting better.
Best rule of thumb I usually stick too, under 80c/1.36v (low 80's ONLY while stress testing full AVX), but now we are going much more cores, thats lowering to under 1.3. You will have issues with your psu if you decide to get a gfx card pcie but should be ok for now.
Looking at the cooler, you may have issues with that, you really need one where you can setup a push pull fan config, even a cheap one can cool it enough for maybe 4ghz.

“Caution: The NH-L9x65 is a highly-compact low-profile quiet cooler designed for use in small form factor cases and HTPC environments. While it provides first rate performance in its class, it is not suitable for overclocking and should be used with care on CPUs with more than 84W TDP (Thermal Design Power). Please consult our TDP guidelines to find out whether the NH-L9x65 is recommended for your CPU.” – Noctua

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Last edited by Comatosed; 12-29-2019 at 07:37 PM.
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post #3 of 3 (permalink) Old 12-29-2019, 08:52 PM
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i've had good luck using the modern "tuning tech" in gaming BIOSs as a starting point, then dialing back. They aren't quite as static as they used to be. IE: would crash 90% of processors. Now they actually work, some quite well, but not as well as a patient fine tune. Still, they're a good place to start to get an idea of your chip, if your bios has "AI" OC tool.

you should be fine, even with the small case. my 9700k boosts to like 4.7? out of the box with intel turbo boost enabled in the bios.

assuming you don't add a GPU, you' should be fine on power.

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