Quantified: How high temperatures, cooling affect CPU performance

[Nioktefe]

Apparently AMD does not matter and no one needs AMD CPUs (at least this is what I can understand from this article). Even so, I think an AMD CPU would behave differently on a stock cooler.
As for the temperatures on Intel CPUs, I can tell you that on my i5 760 I get maximum 56 degrees C with a CM 212 cooler, while on a haswell i5 you get like 75 degrees C in stress applications with the same cooler (I've tested this). And also take into consideration that the Lynnfield CPU consumes more power than Haswell (without integrated GPU).
So why do we have this kind of difference between the 2 CPUs ? Well, it's because Intel decided that soldering of the IHS is too good for the average consumer, and thermal paste is good enough. What this means is that a Lynnfield CPU can survive with a stock Intel cooler in a stress tool with around 80 degrees C, while on Haswell you get like 100 degrees (on stock frequency).
What can I say, Intel is the best ...

Actually, when I delided my i5 750, I saw that the cpu wasn't soldered to the IHS, there was just some thermal paste, so Intel was already using thermal paste on their cpu's IHS back in 2009, and even back to the core 2 duo era they where already using thermal paste (altough only on their entry cpus like E7200)

Maybe the temperature's delta on your Lynnfield cpu is due to the W/mm² ratio wich is smaller on Lynnfield than on Haswell

 

[Bansaku]

Unbelievable the kind of bigotry some people exhibit behind the guise of a guest account.

lol You use the term bigotry in regards to CPUs? Wow. Thank you for diminishing the meaning of the word.

At best one can say the title of the article should have read ' Quantified: How high temperatures, cooling affect Intel CPU performance ', so please AMD users understand and don't be so quick to rant.

Despite both being X86 arch, the similarities between AMD and Intel end there. Intel has a commanding market lead. Intel has innovated over the past 7-8 years. AMD is stagnant; You could take an old Athlon chip and almost directly compare it to a modern FX/Bulldozer. This is why I jumped ship after my Phenom II and haven't looked back.

 

[Guest]

AMD starts to throttle the CPU frequency at 80C on the FX series. This lowers the temp and performance some and is usually all that is necessary. If however there is some technical issue that causes the CPU temp to continue to rise - such as a heatsink falling off, a fan that dies, a liquid cooler that leaks, etc. then at 90-95C depending on the CPU, the CPU will shut down to protect itself. AMD APUs have a similar approach but the max temp can be higher because you are dealing with both a CPU and GPU combined.

The above info. has been documented by numerous people who took the time and risk to test the AMD FX series CPUs. Laptop CPUs/APUs tend to operate by design at an additional +15C higher threshold. For those who don't know, a heatsink/fan works as well or better on an AMD CPU than the more expensive and leakage prone AIO/CLC liquid coolers.

 

[Guest]

lol You use the term bigotry in regards to CPUs? Wow. Thank you for diminishing the meaning of the word.

At best one can say the title of the article should have read ' Quantified: How high temperatures, cooling affect Intel CPU performance ', so please AMD users understand and don't be so quick to rant.

Despite both being X86 arch, the similarities between AMD and Intel end there. Intel has a commanding market lead. Intel has innovated over the past 7-8 years. AMD is stagnant; You could take an old Athlon chip and almost directly compare it to a modern FX/Bulldozer. This is why I jumped ship after my Phenom II and haven't looked back.

PLEASE STOP WITH THE B.S. !!! Your rant is completely clueless.

AMD is two years ahead of Intel on APUs and invented the X86 APU so spare people your dribble about Intel saving the world. Intel are convicted criminals on three continents and have been convicted multiple times of U.S. tax fraud. Only the clueless or those who lack a moral compass would support a criminal corporation.

 

[LNCPapa]

Wow... Think you forgot to take these before posting