CPU/general cooling questions

[dnut_00]

Hi all.

I've looked around and couldn't find anything definitive regarding the rules of thumb on cooling (if that's a thing).

My questions are (and I believe many others would benefit from such a guide):

For not-OC i5 4440/4570/4670 (I assume there should be no difference in this context):

1. Do I need CPU cooler? Turbo Boost is sort of OC, I believe, so yes?
2. Does stock HSF tend too loud on stock or during Turbo Boost?
3. Does a good sound-reducing case alleviate the noise factors from the previous question?
4. Are there any measurements on these things on per-case basis?

More concretely:

I am considering Fractal Design Define R4 and I can see that a lot of thought went into making that a noise-reducing case.

1. Will it compensate for stock HSF noise both at stock and during TB?
2. Should I consider an additional 140mm fan (third one) depending on my GPU (which adds to the general temperature, I presume)?

Thank you.

P.S.

Just look at this monster (that's Scythe Mugen 3):

One has to wonder whether this is really necessary for "normal" people ...

 

[dma0991]

1. Stock heatsinks only gives acceptable performance(temps and noise). Even without the intention of overclocking, you can still benefit from having an aftermarket heatsink. Lower temps increases the CPU's longevity and bigger heatsinks means bigger fans, which doesn't have to spin as fast as smaller ones, thus reducing noise.

2. The loudness of the fan scales with the temps. Turbo Boost is a short term factory overclocking, it will not be as loud nor as hot as running Prime95 on all cores.

3. Definitely, but don't expect total silence.

4. Google is your best friend. Case reviews are abundant. This should get you started.

Fractal Design Define R4
1. No it won't. Having both a bigger heatsink and the Define R4 will definitely be better than with the same case with stock heatsink.

2. Placing that fan at the side panel means removing the ModuVent panel, which leaks more noise. A 140mm fan will help with the GPU temps but miniscule difference at best if case airflow is acceptable. Try it out yourself to see if you're comfortable with the added noise.