Question Intel i5 (Gen4) works as Pentium III (even clocked)

[Zarko_Gjurov]

Why on constant IRAY rendering with maximum PC load viewable via CPU 100% and RAM 100% in Task Manager overclocked CPU multiplier is not at x40.0 and why 4GHz are not actually used at all?!

Why the core speed even falls below the stock core speed, because at the end when the core speed goes down to 800 MHz (exactly 799.8) am I working with Intel i5-4th Generation or with Pentium III ?!?!?!

Is my CPU dead or is dying slowly and psychopathically f***k's up with me, because CPU "experts" say CPU cannot die or get damaged isn’t it?!

 

[TerryLaze]

Your temps are at 100 degrees for core 0.
You need more cooling if you want more clocks.
4690k is rated for 3.9Ghz max single core and you are trying for 4Ghz all core, you need better cooling.

 

[Zarko_Gjurov]

Your temps are at 100 degrees for core 0.
You need more cooling if you want more clocks.
4690k is rated for 3.9Ghz max single core and you are trying for 4Ghz all core, you need better cooling.

That is far lower beyond the default factory clock settings, how is listed here

Intel CPU Temperature Guide 2023
https://forums.tomshardware.com/threads/intel-cpu-temperature-guide-2023.1488337/

In "Section 6 - Throttle Temperature" where it says:
"Also called "Tj Max" (Temperature Junction Maximum), this is the Thermal Specification that defines the Core temperature limit at which the processor will automatically "Throttle" (reduce Core speed and voltage) to safeguard against thermal damage. Processors that reach Throttle temperature can cause momentary hesitations in applications and frame stuttering in games.
...
4th Gen 22 nm i7-4790K / i5-4690K (TDP 88W)
Tj Max 100°C
"

So, when we speak about auto-reducing the speed from safety reasons, that means that CPU needs to hit 100 C, and when it hits that point even with one core Guide doesn't says 4690K will auto-transform itself in Pentium 3... Best guessing that speed will be maximum reduced till default factory clock down to @3.5 GHz... But what about on 44 C and speed of only 800 MHz? Then the heat is the problem again? I don't see how exactly...

 

[Misgar]

CPUs can die for various reasons. I killed an old Athlon CPU stone dead by applying a 500mV increase in the BIOS instead of 50mV by mistake. ESD damage can degrade and kill CPUs over time.

The i5-4690K was released in June 2014, which means the design of your CPU is 9 years old. Its maximum operating temperature is shown as 72.72C. If you really have managed to get it to run at over 90C, your cooling is inadequate, or the CPU is malfunctioning, or the measuring software is in error.
https://www.cpu-world.com/CPUs/Core_i5/Intel-Core i5-4690K.html

The i5-4690K is rated at 3.5GHz with boosting up to 3.9GHz on 1 or 2 cores.
If 3 cores are heavily loaded, boost speed is reduced to 3.8GHz.
If all 4 cores are heavily loaded, boost speed is reduced to 3.7GHz.

You cannot expect to run all 4 cores at 4.0GHz without some serious overclocking, extra voltage (applied manually) and a really big heatsink. It will not run an all-core 4GHz overclock out of the box on a stock cooler.

 

[TerryLaze]

That is far lower beyond the default factory clock settings, how is listed here

Intel CPU Temperature Guide 2023
https://forums.tomshardware.com/threads/intel-cpu-temperature-guide-2023.1488337/

In "Section 6 - Throttle Temperature" where it says:
"Also called "Tj Max" (Temperature Junction Maximum), this is the Thermal Specification that defines the Core temperature limit at which the processor will automatically "Throttle" (reduce Core speed and voltage) to safeguard against thermal damage. Processors that reach Throttle temperature can cause momentary hesitations in applications and frame stuttering in games.
...
4th Gen 22 nm i7-4790K / i5-4690K (TDP 88W)
Tj Max 100°C
"

So, when we speak about auto-reducing the speed from safety reasons, that means that CPU needs to hit 100 C, and when it hits that point even with one core Guide doesn't says 4690K will auto-transform itself in Pentium 3... Best guessing that speed will be maximum reduced till default factory clock down to @3.5 GHz... But what about on 44 C and speed of only 800 MHz? Then the heat is the problem again? I don't see how exactly...

In your picture the cpu is running at 3Ghz at 100 degrees so I don't know what you want.

If the CPU isn't doing anything it will clock down to 800Mhz to keep cool and to not burn more power than it has to.
A Pentium would always run at top speed but newer CPUs only run at top speed if the software also needs it or can use it.

 

[Misgar]

I've got an i5-4670K LGA1150 CPU (very similar to your 4690K) in one of my old systems and it's never exceeded 70C. I ditched the puny Intel stock cooler in favour of a much larger air cooler.

The 4670K is tweaked from the 3.4GHz base frequency up to a modest 4.3GHz all-core overclock, with a manual Vcore setting of 1.250V. I could have clocked it up to 4.5GHz with 1.300V, but I prefer to delay the onset of electro-migration with a lower voltage.

I still have Intel SpeedStep enabled despite the overclock and when the 4670K is idling, it drops below 1GHz down to approximately 800MHz. As soon as I throw a more strenuous task at the CPU, it ramps up to 4.3GHz on all four cores.

I expect to see temperatures for the 4670K in the 50's or low 60's Centigrade when running flat out. When idling it's in the 30's or low 40's. Only my 7950X under a Noctua NH-D15 runs in the low 90's C when rendering videos.

 

[uWebb429]

@Zarko_Gjurov

Many popular monitoring programs do not accurately track the CPU speed when a CPU is thermal throttling. These same monitoring programs are not very accurate when an Intel CPU is lightly loaded or idle. Use ThrottleStop 9.6 if you want to see what speed your CPU is really running at. ThrottleStop uses the Intel recommended monitoring method.

https://www.techpowerup.com/download/techpowerup-throttlestop/

If you want your CPU to run at full speed when it is lightly loaded, you need to use the Windows High Performance power plan. If you want your CPU to slow down, use the Windows Balanced power plan.

Is my CPU dead or is dying slowly

Your CPU is working correctly. Your CPU is too hot so it is slowing down to protect against any long term damage. You need to install a better cooler if you want to run your CPU fully loaded at full speed.

If you use better monitoring software and setup Windows correctly, you will see that your CPU is probably not stuck at 800 MHz like some software is showing you. Intel CPUs can vary the CPU speed hundreds of times per second when a CPU is thermal throttling. Most monitoring software fails when a CPU is thermal throttling. You can open the ThrottleStop Limit Reasons window to find out the reason why your CPU is throttling. Exit Speccy when testing. Post some screenshots of ThrottleStop if you need help.

Its maximum operating temperature is shown as 72.72C

This spec is known as the Tcase temperature. You need to cut into the heat spreader over top of the cores with a Dremel or similar tool and solder in a thermal temperature sensor at the geometric center of the CPU. This is the only way to accurately measure the Tcase temperature of an Intel processor. This spec is only for large system builders that need to decide on heatsink and fan design.

Intel does not want users hacking up their new processors with a Dremel so they included core temperature sensors. These are mounted on the hottest spots on the individual cores. These sensors allow the CPU cores to reach up to 100°C before thermal throttling needs to begin. The core temperature sensors are what control thermal throttling. There is no such thing as a Tcase sensor that is built into the CPU. A 4690K uses the same 100°C thermal throttling temperature as most any other Core i CPU released since 2008.