My temperatures are very different within the 4 cores.

[mohamedrai2003]

The title is the reason why this i had this question. how do i find out if any core of my processor is damaged or not functioning.
my processor is a Intel core 2 quad Q8200

Please. I need to know badly

 

[volkgren]

Temp difference in cores is common. Sometimes up to 10C difference. If you check the thermal paste to make sure it spread properly, then there's not much else you can do. Sometimes cores could possibly be damaged, run stress tests to check for stability. It is uncommon.

 

[Solandri]

The top of your CPU isn't actually the top of the CPU. It's a metal heat spreader pasted on top of the silicon which is the actual CPU. Because they're mass-produced, occasionally a CPU has a poor pasting job between the silicon and the heat spreader, resulting in some cores running hotter than others.

It's possible to remove the heat spreader and reapply the paste (called delidding).
https://www.ekwb.com/blog/what-is-delidding/

But for a CPU this old, I'd just buy a new computer. The electricity savings alone will make back most of the upgrade cost within a few years. Your Core 2 Quad PC is probably burning 100-125 Watts at idle. Most modern systems are down around 30 Watts idle. For most people that'll translate into $50-$100 per year difference in electricity consumption.

 

[volkgren]

Older Intel CPUs were soldered, and can be damaged when attempting to delid.

Core 2 Quad is more like 65W idle, new Intel CPUs are more like 15W idle.

 

[mohamedrai2003]

Thank you...
so i guess all i have to do to check my cores is just to run a stress test. all i want to know is if all my cores are functional

 

[mohamedrai2003]

Can u suggest me a software to stress test my PC. Because i m not that aware of stress testing

 

[volkgren]

CPU benchmark - Cinebench R15 - https://www.maxon.net/en/products/cinebench/

CPU Stress Test - Prime95 https://www.mersenne.org/download/

System Benchmark - Userbenchmark - https://www.userbenchmark.com/

Careful with Prime95; if your cooling is not sufficient you will burn up your processor if you let it run for long. If you see above 90C then turn it off.

 

[Solandri]

Core 2 Quad is more like 65W idle, new Intel CPUs are more like 15W idle.

Total system power draw was higher on these older systems. My old Core 2 Duo box had a 65W TDP for the CPU, but the total system was about 110 W at idle, 150W at load, nearly 200W when gaming. Likewise, the other system components will bring a modern system up to about 30 Watts idle.