CPU speed drops from 2.59 to 0.75 after 1 hour of playing +/- medium games (from dota to witcher). What is the problem?

Question

Computers

it seemed that everything was due to updating the drivers (before the update everything was ok), but after the rollback it didn’t get better, it
heats up to 75 degrees
, did all kinds of tests, didn’t notice any problems (there were no problems with the computer before, I could be wrong)
I didn’t find any viruses
i7-950hf

Answer 1

See specifications: https://ark.intel.com/content/www/ru/ru/ark/produc...
TCASE
The critical temperature is the maximum temperature allowed in the integrated heat spreader (IHS) of the processor.
TCASE 67.9°C
It boils to the point of throttling.

Answer 2

heats up to 75 degrees

Well, this is quite a lot for the processor, at 80, a PC emergency shutdown usually already occurs.
Check cooling, fan speed settings, dust clogged cooler.

Answer 3

overheating
, especially if the PC is left to "stand" for 15 minutes, then again everything is ok?)

Answer 4

Open the task manager
See where the bottleneck is at the time of the brakes
Then decide on the spot
To dismiss the option with the processor - run a load test (for example, OCCT) and see what temperature will be under a stable load. Although 75 is too much. Proof https://community.intel.com/t5/Processors/i7-950-t...
I had something similar on my I5 760 when the boxed cooler began to die. I changed it to a tower and the system unit is still working briskly. No more than 60 degrees in tests.

Answer 5

Video card, CPU, system chip, have built-in overheating protection. And they automatically reduce the clock frequency to maintain the maximum temperature set (by the manufacturer) +75 C. (not dangerous)
Solution:
1. Check the operation of the cooling system
(Dust - NO. When the temperature rises, the fan speeds up to the maximum)
2. Remove the cooling system, check condition (presence) of thermal paste. Replace thermal paste if necessary.
For "enthusiasts":
Put a more efficient cooling system (water).

Answer 6

Still, it's a bit unclear what a "good year" is...

Answer 7

An error in the logic of the third cycle, it should have another cycle that counts the sum of the digits of the year, and after that there is a check for the same remainder, in case of a fail, the year is increased by one and the big cycle continues, in case of a match, the cycle stops .

Answer 8

int layer = 0;
while ( lyear != 0 )... - How is this supposed to work?
And you clearly have confusion in calculating the remainder of the division by 10 of the sum of digits (when calculating for the year). It is worth taking it into a separate function, and then you will understand everything yourself.
And yes, I didn’t immediately get a grasp of the implementation of calculating the remainder ... "the remainder from dividing the sum of the digits of which by 10" - you calculated the sum of the digits, but stopped there.