Does it mean that between 7600 and 7600k there is no difference in noise if both of them raise the fan to 1800 after 10 minutes video encoding? This is strange, because 7600k more hot chip
In limited testing by members in this thread, the 7600K behaves a lot closer to the 7600 than it does the 7700K, despite the fact the 7600K is a 91 Watt TDP chip and the 7600 is a 65 Watt TDP chip. However, with the one 7600K chip that Tom's Hardware tested, under extreme conditions, the 7600K did get significantly hotter than the 7600, but still nowhere near as hot as the 7700K.
Why did you choose 7600, and not a similar noise level 7600k or the quietest 7500?
Since the 7600K is rated higher at 91 Watts, I didn't want to take the chance of losing the chip lottery and getting a hot one. This was before the people in this thread had posted their 7600K results too, so I was not aware that the 7600K could behave almost just like the 7600 in some cases (if you're lucky). I figured the 7600 was good enough since it is only 100 MHz slower in all-turbo mode, at 3.9 GHz. The 7600K is 4.0 GHz in all-turbo mode. That means in all-turbo mode, the 7600K only has 2.6% more clock speed.
I chose the 7600 over the 7500 just because it was faster, and both are rated for 65 Watts TDP. Again, I was not aware of the 7500's noise results when I ordered the 7600, because the 7500's noise results had not yet been posted. But that's OK, because the 7600 satisfies my preferences in terms of noise behaviour, and has 300 MHz (8.3%) more clock-speed in all-turbo mode, along with a significantly faster GPU, for not too much more money.
Overall, from what we have seen, the 7500 simply runs cool, and the 7700K simply runs hot. The 7600 and 7600K are in-between but on the cooler side. The 7600K can run relatively cool as demonstrated in this thread, but it's not guaranteed since it's rated for 91 Watt TDP. We already know from Tom's review that under extreme conditions, the 7600K can run significantly warmer than the 7600. In contrast, the 7600 is guaranteed to run relatively cool, because it's a 65 Watt TDP chip, but the 7500 often will run even cooler.
Which is probably why it was going for HOURS.
I do get being sensitive to noise but the machines only
make that noise when you do certain processor-intensive activities like video encoding. I know because I have an i7 that never makes fan noise except when I am doing certain activities like video encoding.
It sounds like you have the appropriate machine for you then.
For me, most of the time it was quiet too, but I didn't like that any processor intensive application (not just video encoding) could get the fan to spin up so quickly. It was a noticeable change from my previous 2010 i7 27" iMac.
