Ugh. Just started an hour ago. Looks like my Cooler Master fan that is mounted on my CPU heat sink has decided to start seizing up. I removed it, cleaned it, put a dab of oil on the fan…but none of that helped. Gonna have to operate naked until I get a replacement…(where is that Amazon drone?)…
I know that you can just replace the fan and not the whole unit but…
Brah, you need fans???
Gimme two months and $25,000, and I can spec you a computer case using a couple of their high-flow/ low velocity fans.
@Fridge is right - the H-series are far better than air, plus less noise. Plus, I open up my side case and get to see this!
What do you mean you only used one zip tie…??!
Don’t forget there’s Gallium arsenide in the CPU wafer. If you ate several of them quickly you’d be dead within 70 years. Gotta balance the risks with a self-build 
Just had my computer shut off - hmm…downloaded CoreTemp and this is what I’m showing after setting up a small fan blowing inside the CPU…max temp there (64C) was right after I rebooted and just after I put the fan on…
What should “normal” i7 idle temp be at?
Depends on surrounding air temperature. In a hot office I’ve got this at semi-idle (some stuff working away in background but ok for me to browse) at the moment:
My volts are higher, and really the test of any fan/cooling is when under load for 5 mins etc. Max temp (TDP) would be something like 85C. 65C is not like really hot or anything, but it would be interesting for you to run ARMA 3 or something (or Prime95 etc). The i5/i7 Haswell’s will actually forceably underclock (that frequency value with the x40) if it starts to get uncomfortable before shutdown unless disabled in BIOS.
I don’t want to tempt fate, but it’s actually hard to hurt a CPU nowadays, they sort of self protect with an underclock or a windows crash first now. 
Don’t forget to buy some fish food too.
https://www.newegg.com/Product/Product.aspx?Item=N82E16835181030&cm_re=h60-_-35-181-030-_-Product
Well, I had DCS World paused in the background when the computer shut off…so that might have been driving the temps up to. Whatever the case, after 15 minutes with the fan on, the CPUs are now showing 39-40C - room temperature is 23C.
That is kinda warm for idle.
Given it’s just a straight 120mm fan on the Coolmaster heatsink you have, would it worth just using another fan from your case and just temporarily putting it on heatsink duty? Dissipation of heat from the CPU is worth more than just moving hot air around a case, so it would be a better short-term solution until something better turns up in the mail. Some cases have 120mm’s at the front, so you could borrow one of those?
Good idea…I definitely have case fans I can sub in…
New fans arrived - installed…temps down to about 39C at idle. Will give it a whirl under load in a bit…
39C is still high for idle. You should be idling at 30C ~ 34C
This is saying 34 to 39C for i7-4770K…so I’m idling at the top of that range…
