45 C very quiet vs. 40 C really noisy ....

I have an intel i7 920 @ 3.2 GHz ... and i installed a 120mm fan i bought at best buy as the top exhaust fan on my cooler master scout. The reason i replaced the top fan was because i thought the top fan was broken, but it wasnt in the end- the CPU fan cable was blocking the original CM scout top fan.

With the bestbuy fan as a top exhaust, i got CPU temps of like 39/38/38/36 for each core. But the thing was, i almost have a tough time sleeping at night cause it was quite noisy ...
So today, i reinstalled the 140mm fan that the case came with and the readings are like 45/44/44/41 for each core. So the original fan is MUCH quieter but makes my temps go up ~5C

So at 45 C, is it okay at this temperature? Will it have as of a long life.. compared to a i7 @ 39 C ...
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  1. well those are idle temp so it won't really matter too much, what are temps under load (use prime95 small fft's)
  2. with small fft's i get like 61/59/59/56
  3. you should be fine then
  4. You didn't happen to reverse that top fan, did you?

    Had to check for 5 degrees :)
  5. i'm pretty sure i didn't reverse the fan ...

    now my idle temps are 43/41/42/39

    phew , maybe i just had to wait a little or somethin lol
  6. As long as its blowing out, you are good.
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