I have bought the low power i7-3770S version CPU. This runs at 65 W TDP instead of the normal 77 W. My thought there is that if the maximum TDP is lower, then the maximum cooling that is required will be less, and thus less noisy. I understand that under idle or light load the differences may be small.
The Noctua support team recommended the NH-L12 for my CPU, so of course I ran over to SPCR to look for a review
I have two questions.
The review used a 95W AMD CPU, while I have a 65 W Intel CPU. Assuming the same airflow / fan speed, how do I get a rough guess for what the temperature rise will be when going from the 95W CPU to my 65W CPU? I am particularly interested in the top table, where the 6V row that shows both stock fans at a combined 12 dBA allow just a 22 degree Celsius rise (with 95W CPU). What range of Celsius degree rise would I likely see with the 65W CPU at the same fan power/noise level?
My other question is, what is good enough? I know Intel says maximum temperate is 69.1 degrees C for the i7-3770S. Even with the 95W CPU, the review listed above shows that at 12 dBA and CPU load only a 22 degree rise is seen, so say an absolute temp of 45 degrees (with 23 degree ambient temp). I also think it is curious that some reviews show a 95W CPU with the same cooler going up to 59 degrees. Not sure what to think of the difference in results.
Anyways, the question is: Is 45 degrees absolute temp good enough, given that I intend to keep this computer for 10 years? Is 59 degrees good enough? (I kept my last computer for 10 years.) How low should I aim to keep the CPU temperature when it is under full load, for CPU longevity?
Okay, and a third question: Down-flow CPU cooler: How valid is it to think that having a down-pointing CPU cooler will help the longevity of the motherboard? I am getting an ASUS P8Z77-M PRO.
My usage patterns: Right now, pretty light. But I do software development, and as I plan to keep this computer a long time, I prefer to overbuy than to have to put up with excessive noise.
Thanks guys! I will appreciate your help.