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Old 07-02-2008, 07:00 AM   #1
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Default My Quad-Core's (Q6600) Fan is loud.

I have a Raidmax ATX-568WBP case, and Antec Earthwatts 500W PSU. Yet, i still hear something noisy. I've ruled it down to the Q6600's fan. The BIOS shows the RPM at over 3200. It's a 4-Pin fan, and i have 'CPU Quiet Fan' enabled in BIOS, but it does NOT cut the racket. Does the stock fan of the Q6600 have PWM? Is the fan on it sleeve bearing, do i need one that's Rifle or Ball bearing? What's a good alternative quiet fan (>21 dBA) for under $30? Preferably, NOT with push-pin clips, since they're a pain to put on. Some help would be great.
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Old 07-02-2008, 07:46 AM   #2
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I'd say there's some kind of miscommunication between your CPU fan and your motherboard. As long as your processor is at a reasonable temperature, your fan shouldn't be spinning that fast. How hot is your processor according to your BIOS?
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Old 07-02-2008, 08:47 AM   #3
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My motherboard is Asrock 4CoreDual-SATA2 R2. What do mean "miscommunication" between the CPU fan & motherboard. How could this happen The temperature starts out at 94º F, within about 3 minutes it jumps to 120º F, in about 5-10 minutes it goes to 123º F, after that it hovers between 123º-129º F, it usually stays 123º-125º F, though. Now, i did remove the thermal paste off the CPU and Heatsink. BUT, with the paste on there temps where 118º-121º F (NOT much cooler), and it was STILL noisy. What are ideal temps for a Quad-core, anyhow? Also, what RPM speed should i expect for the CPU fan? What else can i try?

Last edited by douche; 07-02-2008 at 08:51 AM.
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Old 07-02-2008, 09:22 AM   #4
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I'm currently using two stock Intel fans, and neither ever breaks 1200RPM. The general consensus regarding stock Intel fans is that they are quiet, if not the best performers.

The lowest average temperature you reported before removing your thermal paste (why would you do that?) is 118F, which is about 47C (Celsius is the standard, please adhere to it).

47C, while high (around 35C is an ideal idle temp for Core 2), still shouldn't provoke fan speeds like 3200 (I doubt it actually gains any performance beyond ~1500RPM anyway). It may just be that your motherboard has a particularly loose idea of what "quiet" is, but to me it sounds like 3200RPM is the full 12V; I don't think your fan is being controlled at all. If tinkering further with the settings in the BIOS doesn't yield any results, I'd think about controlling the fan elsewhere (a fan controller or an undervolted 5V or 7V line, the 4-pin connection is compatible with 3-pin connectors), or perhaps replacing your HSF, whatever you're more comfortable with.

In any case, you need to replace your thermal paste ASAP.
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Old 07-02-2008, 10:24 PM   #5
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The moment i turn on the computer, the CPU Fan's RPM starts at 2000 and climbs to 3200 after about 30 minutes. The reason i removed the paste was because i plan on re-applying, soon. BUT, now i'm NOT so sure, without the grease, i just notice it running a few degrees hotter. Apparently it does NOT make the fan quieter. What do you mean by the "Full 12V?" Are you talking about the ATX 12V 4-pin power connector? I know that powers the CPU, but is it NOT suppose to supply 12V?? I also know the PC will NOT turn on without it. Since the 'CPU Quiet Fan' option in BIOS seems to make NO difference whatsoever in fan speed, than it's probably NOT controlling it. WHY, though How does a Fan controller work? I mean, how does it manage to override fan control of the motherboard? What's an "undervolted 5V or 7V line"? You keep mentioning my motherboard, what, in particular, could be the problem with it??
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Old 07-02-2008, 10:55 PM   #6
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1. Reapply thermal paste asap
2. The cpu fan (4 pin) plugs right into the a female connector on the fan controller: then via a dial you can lower or raise the speeds of the fan.
3. If your Core 2 duo is running at 48 c the motherboard is not gonna stay in "quite" mode. I have pentium 4's that don't even get that warm.....
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Old 07-02-2008, 11:16 PM   #7
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12V is the maximum and default power for a case fan. Fan controllers (and, in theory, your motherboard's fan controller) undervolt that down to around 5V, i.e., the motherboard fan header or fan controller provides anywhere between 5V and 12V of power to the fan to achieve the desired RPM. It doesn't sound like your motherboard is doing this because 3200RPM is around the maximum for stock Intel fans.

This could either be because of, like I said, a miscommunication between your motherboard and fan, or simply because your processor is so hot. If you've exhausted all the options your BIOS has that have anything to do with fan control or thermal control, then it's the latter.
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Old 07-03-2008, 01:49 AM   #8
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Quote:
Originally Posted by lion149 View Post
The cpu fan (4 pin) plugs right into the a female connector on the fan controller: then via a dial you can lower or raise the speeds of the fan.
But, if the fan controller sits in the 5.25 drive bay, that's FAR away from the CPU, isn't it? Wouldn't the CPU Fan's cable be too short to reach the fan controller?


Quote:
3. If your Core 2 duo is running at 48 c the motherboard is not gonna stay in "quite" mode. I have pentium 4's that don't even get that warm.....


That's Core 2 QUAD (Q6600), NOT Duo. Speaking of motherboard, there's "M/B Temperature" in the BIOS, too, which must mean motherboard, no? It's 110 F max, and usually around 103-108 F. Should the mobo even get hot, at all? How hot were the warmest Pentium 4's?

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Originally Posted by fortyways
This could either be because of, like I said, a miscommunication between your motherboard and fan, or simply because your processor is so hot. If you've exhausted all the options your BIOS has that have anything to do with fan control or thermal control, then it's the latter.
I still do NOT understand how or why there would be "miscommunication" between the fan and mobo. If the processor is too hot, then how can i cool it down? The only option in the BIOS related to CPU i have NOT mingled with is "CPU Host Frequency." What does that do? The manual doesn't really explain much about it. It's set to Auto, which detects 266.
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Old 07-03-2008, 08:14 AM   #9
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Quote:
Originally Posted by douche View Post
But, if the fan controller sits in the 5.25 drive bay, that's FAR away from the CPU, isn't it? Wouldn't the CPU Fan's cable be too short to reach the fan controller?
You can get 3-pin extension cables.

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Originally Posted by douche View Post
That's Core 2 QUAD (Q6600), NOT Duo. Speaking of motherboard, there's "M/B Temperature" in the BIOS, too, which must mean motherboard, no? It's 110 F max, and usually around 103-108 F. Should the mobo even get hot, at all? How hot were the warmest Pentium 4's?
Core 2 Quad uses the same architecture as Core 2 Duo and shouldn't run much hotter. M/B temperature in your BIOS is most likely referring to your northbridge, which does produce heat, hence the heat sink on it. Those temperatures are fine.

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I still do NOT understand how or why there would be "miscommunication" between the fan and mobo. If the processor is too hot, then how can i cool it down? The only option in the BIOS related to CPU i have NOT mingled with is "CPU Host Frequency." What does that do? The manual doesn't really explain much about it. It's set to Auto, which detects 266.
If you've exhausted all your BIOS cooling options (don't mess with that last one, it doesn't have anything to do with fan speed), then I imagine 3200RPM must be ASRock's idea of quiet, and you'll want to either manually control your fan or replace your HSF entirely. But first, I'd tackle your heat issue. Is it especially hot in your room or anything? Those temperatures are just too high.
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Old 07-04-2008, 08:50 AM   #10
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Quote:
Originally Posted by fortyways View Post
You can get 3-pin extension cables.
Where? How do they look like? Would you mind posting pictures of these.



Quote:
Core 2 Quad uses the same architecture as Core 2 Duo and shouldn't run much hotter. M/B temperature in your BIOS is most likely referring to your northbridge, which does produce heat, hence the heat sink on it. Those temperatures are fine.
iF 103-108° for the northbridge is fine, then wouldn't the CPU be hotter then that? If so, how much warmer should it be?



Quote:
If you've exhausted all your BIOS cooling options (don't mess with that last one, it doesn't have anything to do with fan speed), then I imagine 3200RPM must be ASRock's idea of quiet, and you'll want to either manually control your fan or replace your HSF entirely. But first, I'd tackle your heat issue. Is it especially hot in your room or anything? Those temperatures are just too high.
Actually, i went back to "CPU Quiet Fan" settings in BIOS and set it to 65 C (before it was 50-55), which is the max it can go, and now the RPM is between 2615-98, it's now slightly quieter, but still loud. What should i replace my HSF with My budget is $30. Being summer and all, it reaches triple-digits regularly im my town, but i have the A/C on to 81° F, and at night it's about the same, but the CPU's temp does NOT change.
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