CPU Unfathomable 90° Celsius [Need Advice]

[MuricaCountryBall]

My fault for not paying attention and maintenance regarding my system.
As I planned on making changes to my gaming rig anyways, and knowing I would change my case, I decided to blow away the large amounts of dust and particles in my computer, that was 5 days ago.

As I was helping a friend regarding his GPU I scrolled down Afterburner's monitor, looking at my CPU's temperature reaching 100° at the time (Playing For Honor under load) made me worrisome.
I assume my CPU has been handling the same heat like that for months now.
Closing the game I looked as the temperatures were lowering down to around 90, I closed a few more programs(?) that were not suppose to increase my CPU's temperature like Hamachi, Steam etc. and it lowered to 50° idle.

Note that not once did I uninstall the CPU cooler and cleaned it from dust. I am running a Gigabyte Z87 with this CPU with 1150 socket. (4 years since it was installed)

I downloaded HWMonitor and set it up next to the Afterburner to see if it has the same results, and it did.

I just don't know what to do, I am thinking of removing the cooler completely, apply new thermal paste and install a new cpu cooler that I'll buy tomorrow, doing so I'll also buy the Corsair 400C along with it and install everything in that rig, since the environment needs to be dust clean.

Give me your thoughts on my current situation, how I should act, I have so many ideas, going different routes, that I don't know what to do.

Specs:
Processor: Intel Core i7-4770 (3.4 GHz)
RAM: 16 GB
Videocard: Nvidia EVGA GeForce GTX 1070 8GB Superclocked GDDR5 GAMING 3.0ACX
PSU: Corsair CX750M 750W Gray/Black New

 

[jmcgaw]

That is one of the heatsinks that use those horrible Intel 'push pins" isn't it? If so , it takes almost nothing to have one or more pins detach themselves and leave a bad connection between the HS and the CPU. Believe me, I've had it happen at least a dozen times. Checking to see that all four pins are properly anchored would be a good place to start -- that HS needs to be _tight_ to the top of the CPU. Pulling the HS, cleaning everything, and re-installing with new compound might be worthwhile but beware of those damned pins! They will bite you when you least expect it.

 

[zyh1987]

if you are already considering getting a cpu cooler, by all means please do so. The intel cooler is pretty bad at cooling i7 CPUs.

I’m not sure about what case you are using it now. If it has few fans on it, I don’t think you need to change it. Just have it cleaned. And tidy up the cable management. Having 1 120mm+ for intake and 1 120 mm+ fan exhaust is like the minimum nowadays.

 

[MuricaCountryBall]

Any specific cpu coolers you suggest, my friend suggested something from Noctua, while not being the prettiest he says they are the best.

 

[MuricaCountryBall]

Update: I've decided to check if the airflow was the problem (although skeptic cause gpu runs 65 max)
Removing the side panel, it ran at 75-80 at the start, jumping to 83 later on. (GPU ran 57-60 instead of 64-66)
at the second round of the same match in For Honor, I attached the panel back on, and it jumped to 90, later climbed to 100.
Even after removing the panel once more, it was required I'd close the game for the temperatures to jump back to normal 50 idle.

Took a screenshot, and you can see the huge amounts of dust around the CPU Cooler. I am thinking of buying a new case, Corsair 400C specific, install a new Noctua cooler instead of this, with Arctic thermal paste.