i am not getting 4.3 ghz in my new i7 8700 at all cores during heavy gaming....please help

Hello ArpCha,

Thank you for contacting Intel® Communities Support.

I am glad to assist you, the processor base frequency is 3.2 GHz and the Max Turbo Frequency is 4.6 GHz.
https://ark.intel.com/products/126686/Intel-Core-i7-8700-Processor-12M-Cache-up-to-4_60-GHz

Intel® Turbo Boost Technology is typically enabled by default. You can only disable and enable the technology through a switch in the BIOS. No other user-controllable settings are available. Once enabled, Intel® Turbo Boost Technology works automatically under operating system control.

You can monitor the processor behavior with the Intel® Extreme Tuning Utility (Intel® XTU).
https://downloadcenter.intel.com/download/24075/Intel-Extreme-Tuning-Utility-Intel-XTU-

If the processor frequency is between 3.2 GHz and 4.6 GHz the processor is having a normal behavior.

Let us know if you need further assistance.

Regards,
Stephen C.

Arpan,

The Turbo Boost feature is making use of the headroom available in the processor. The headroom available decreases as the number of active cores increases. With only one core active, the maximum turbo boost frequency for your processor is 4.6GHz. As you increase the number of active cores, the maximum turbo boost frequency will drop. When all cores are active, the maximum turbo boost frequency for your processor is 3.8GHz -- which is exactly what you measured in XTU (surprise!).

Intel documents how the processor determines the turbo boost frequency as follows:

Bottom line, for the way that you are testing the feature, you are seeing exactly what you should be seeing. If you want to see the higher numbers, you need to craft a test that utilizes a smaller number of active cores.

Hope this helps,

...S

Nope, absolutely no way you will get that high a frequency with all cores active.

...S

Do you believe everything you see on YouTube? More than half of it is faked. As for your WIKI site, anyone can put anything they want up there any time they want.

According to your second capture, as you have the processor configured, you are going to get no better than 4.0GHz with single core active, 3.9GHz with two, three or four cores active and 3.8GHz with five or six cores active. Use XTU to change these multipliers to match the numbers on the WIKI page and then see if these are achievable. Of course, being achievable is not the important goal; being sustainable is much more important to your overall processor performance - and this is going to be capped by the quality of your cooling solution, the workload you are executing, etc.

...S

It is well known that MB and cooler play a massive role in the turbo frequencies you will see . If you’re using stock cooler with an ECS mb you are never gonna see 4.3 all core and proabably never 4.6 ona single core. Another important thing to remember is that K SKU stats and what not often get mixed in with non K models . So while someone might say you can hit X frequency on an 8700 they might be saying that because they saw someone with a 360 mm AIO cooler on a ROG hero board do it with a stock 8700k before preparing an OC.

What sort of temps are you seeing ? How are you verifying what you are saying ? What sort of benchmarks are you using ?

Found same issue on other article cpu - Weird turbo boost multipliers on Intel Core i7-8700 - Super User

Try to update your bios version.

I have an i7 8700 and it´s possible all cores at 4.3 Ghz.

You need to go to BIOS, in the option sync all cores and write 4.3 for all of them, then six cores works at 4,3 Ghz.