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Is over 6000rpm on CPU-fan normal?

T

tuaarita

2[H]4U
Joined
Aug 10, 2008
Messages
2,512
I just ran IntelBurn test and on the side I had CPUID's Hardware monitor to see temps.
I noticed the max fan speed was 6750rpm on CPU fan while the max temp was only 51c at most.

I have Asus board with Q-fan, if I disable it the fan will just blow at max speed all the time.
Now with it on it basically keeps at 4600rpm on idle and up there in 6000's on load which gives it a really loud whining noise.

I've checked the temps at which the Q-Fan starts to kick in and I've set them to 48c and max speed at 58c though it doesn't seem to make a difference. SpeedFan can control the fans if I disable Q-Fan but I'd like to handle this without having a third-party app start up with windows.

I'm asking if this high RPM harms the fan during time or should I buy a new aftermarket HSF or some kind of fan-speed controller?
 
Unless I'm missing something your sensors are wrong. 6000rpm is an impossibly high speed for a fan, top speed Delta fans are less than 4000rpm.
 
Think I slowed it down a bit by lowering the Q-fan auto mode voltages to 4.0. Fan is at 3800rpm on idle which would be acceptable for on load fan-speed.
 
If you are using a stock AMD heatsink then over 6000rpm is possible. In fact my 1090T is currently running at 54c and the fan is screaming at 5900rpm, the highest i've seen and heard mine is 6720rpm at a temp of 62deg C.

The only solution is to get a good HSF
 
Indeed it's the stock HSF, I just got this mobo and cpu yesterday but I suppose I'll shop for a new one.. Any suggestions for a new hsf?
 
Well that shows you how much I know :).

6000rpm on stock AMD?! Bloody hell lol...
 
yes if you're using the fan controller on your board it will ramp up to 7000 RPM's when temps hit 60C+ if you turn off your fan controller in the bios the fan will sit at 3800rpm's 100% of the time making it almost dead silent. downside to this is that it cant keep the processor cool at full load but if your processor never hits full load then it doesn't matter.

i suggest going out and spending the 20-30 dollars for a sunbeam core contact freezer or a coolermaster hyper 212+. best investment you could ever make and should last you through a few processor upgrades.
 
tuaarita said:
I just ran IntelBurn test and on the side I had CPUID's Hardware monitor to see temps.
I noticed the max fan speed was 6750rpm on CPU fan while the max temp was only 51c at most.

I have Asus board with Q-fan, if I disable it the fan will just blow at max speed all the time.
Now with it on it basically keeps at 4600rpm on idle and up there in 6000's on load which gives it a really loud whining noise.

I've checked the temps at which the Q-Fan starts to kick in and I've set them to 48c and max speed at 58c though it doesn't seem to make a difference. SpeedFan can control the fans if I disable Q-Fan but I'd like to handle this without having a third-party app start up with windows.

I'm asking if this high RPM harms the fan during time or should I buy a new aftermarket HSF or some kind of fan-speed controller?
Click to expand...

As others say, I recommend that you go out and get a decent air cooler. That Thuban is just waiting for you to crank up the clocks on it, but you need a very good air cooler first. The stock PII cooler maxes out at upto 7000rpms, and you'll know it when it gets that high as it gives new meaning to a "dust buster." It is ear piercing deafening loud.

I can't imagine why you would want to run your fans at high speeds all the time as it is loud enough to be uncomfortable. I would also imagine that it could decrease the life of the fan, although the fan was designed to spin upto those speeds and shouldn't be damaged. I would leave your motherboard's onboard cpu fan controller alone to work by itself as it should do a decent job as long as you don't turn it off. Thubans are safe for temps upto 62 degrees or so, and your motherboard will adjust the fan speed accordingly. On my PII 965 in the gaming rig, the motherboard will ramp up the fan to around 2800 by 55 degrees, 4000rpms by 58-59 degrees, and upto 6990 rpms by the time I get to 62 degrees on a very hot day.
 
amdgamer said:
As others say, I recommend that you go out and get a decent air cooler. That Thuban is just waiting for you to crank up the clocks on it, but you need a very good air cooler first. The stock PII cooler maxes out at upto 7000rpms, and you'll know it when it gets that high as it gives new meaning to a "dust buster." It is ear piercing deafening loud.

I can't imagine why you would want to run your fans at high speeds all the time as it is loud enough to be uncomfortable. I would also imagine that it could decrease the life of the fan, although the fan was designed to spin upto those speeds and shouldn't be damaged. I would leave your motherboard's onboard cpu fan controller alone to work by itself as it should do a decent job as long as you don't turn it off. Thubans are safe for temps upto 62 degrees or so, and your motherboard will adjust the fan speed accordingly. On my PII 965 in the gaming rig, the motherboard will ramp up the fan to around 2800 by 55 degrees, 4000rpms by 58-59 degrees, and upto 6990 rpms by the time I get to 62 degrees on a very hot day.
Click to expand...

You misunderstood, I don't want to keep the fan at 7000rpm on load, but yesterday managed to lower it by a 1000rpm by lowering the voltage.

Also I can't seem to overclock past 214 x 14.0 @ 2.98 Ghz which I was trying to figure out here http://hardforum.com/showthread.php?t=1577261
 
There's no way around it really, if you lower the speed of the fan too much then the cpu will just overheat. Like monkey said, the CM Hyper 212+ makes for a decent inexpensive cooler. Worry about overclocking after you get your temps down.
 
Yeah the thing was I didn't even want to get a new HSF if I couldn't overclock properly. I just got this thing to 250x14.0 @ 3.5Ghz and I'm looking up that cooler.
 
Bearing in mind I know nothing about AMD CPUs...is the stock heatsink just so rubbish as to need 6000rpm on the fan? Or are the processors just rather inefficient?
 
I guess it's the combination of both. I'm trying to place an order on the 212+ but my bank's website is down due maintenance so I can't pay it.

Edit: There we go. Should arrive sometime next week.
 
joxang said:
Bearing in mind I know nothing about AMD CPUs...is the stock heatsink just so rubbish as to need 6000rpm on the fan? Or are the processors just rather inefficient?
Click to expand...

If I'm thinking the right heatsink, it's the heatsink being absolutely terrible. IIRC the bad one is basically a hunk of aluminum (and maybe a copper core, but no heatpipes)
 
Good god, my Freezer64, which is probably not much better than the stock X6 heatsink/fan, idles at around 800 RPM at 34C, ~1000 RPM 50C at full load when folding.
 
The stock AMD heatsink is still basically the same size since the Athlon XP days. They did put in a copper base and heatpipes for the high end Phenom chips but still use a paltry 70x15mm fan and it has to spin that fast just to keep em cool.
 
joxang said:
Bearing in mind I know nothing about AMD CPUs...is the stock heatsink just so rubbish as to need 6000rpm on the fan? Or are the processors just rather inefficient?
Click to expand...

If the temperature inside your computer case is reasonable, there should be absolutely no reason why the fan should have to spin up to 6000+rpms on stock clocks/voltage. If the fan has the spin up that high and you are running stock or near stock, then you might have issues. The stock HSF on the AMD PII's are actually not all that bad and do a good job if you are willing to put up with the noise at higher fan speeds. I am running at 3.5ghz on my 965 at stock voltage, and it has only exceeded 6000+rpms when the computer room temperature got extremely hot during what was an extremely hot summer last year. Even then, it was only because all 4 cores were at 100% utilization.
 
6000rpm?! Geez, my Scythe Ultra Kaze's top out at half that, and by then there's some serous airflow going on there.

Sad thing is, I bet they push more air on low than that AMD thing on high =P

First thing to do is get good cooling. I was seriously limited back in my Athlon x2 days because I had the stock HSF. Learned my lesson and got a TRUE120 for my current rig.
 
I remember my first PC that I built was an AMD 2000+ and the stock fan was around 7000 if I recall. That PC sounded like a vacuum cleaner.
 
You should hear the fans on my 1u dell server when I first power it on. I swear, that thing scared the heck out of me when I turned it on for the first time. I moved/ducked out of it's way expecting crap to start flying.
 
Skillz said:
You should hear the fans on my 1u dell server when I first power it on. I swear, that thing scared the heck out of me when I turned it on for the first time. I moved/ducked out of it's way expecting crap to start flying.
Click to expand...

When cooling systems have to be designed to work within certain space constraints, you are generally going to get a lot of noise unfortunately. I've heard that server cpu fans can especially get crazy loud. The same applies to the AMD PII's stock HSF, as it is low profile and designed to be compact.
 
Skillz said:
You should hear the fans on my 1u dell server when I first power it on. I swear, that thing scared the heck out of me when I turned it on for the first time. I moved/ducked out of it's way expecting crap to start flying.
Click to expand...

Yep, those are nuts. 40mm fans I think, and they have to move lot of air.

I personally would love to buy like 4 of these and put them in a 1U box just to see how loud it is. That's over 9000 RPM!
 
amdgamer said:
When cooling systems have to be designed to work within certain space constraints, you are generally going to get a lot of noise unfortunately. I've heard that server cpu fans can especially get crazy loud. The same applies to the AMD PII's stock HSF, as it is low profile and designed to be compact.
Click to expand...


in the case of server fans noise doesn't mean anything, they are designed to move as much air as possible in the confined spaces of a temperature controlled server room. you put a few hundred servers in a room the noise doesn't matter after a while :D

but in the same token the AMD heatsinks are designed to move as much air as possible in an OEM case which never has good cooling.

FunkZ said:
The stock AMD heatsink is still basically the same size since the Athlon XP days. They did put in a copper base and heatpipes for the high end Phenom chips but still use a paltry 70x15mm fan and it has to spin that fast just to keep em cool.
Click to expand...

depends which version of the heatsink you get. the early phenom II heatsinks were 80mm fans then they eventually went back to the 70mm fan. why, i'm not sure since the original phenom II heatsink was very good.
 
3 ideas:

1- something is interfering with the cooling. bad grease application, bad heatpipe, or fan is sucking in hot air
2- some fans+sensor chips measure a multiple of the actual speed. haven't seen this in a while though.
3- your psu+mobo isn't supplying enough current to your cpu
 
Skillz said:
You should hear the fans on my 1u dell server when I first power it on. I swear, that thing scared the heck out of me when I turned it on for the first time. I moved/ducked out of it's way expecting crap to start flying.
Click to expand...

Oh geez, I had a 1U server once. For some reason, the fans were stuck on max speed ALL THE TIME. The thing sounded like a turboprop at takeoff in my room :eek:

Found out it was some super obscure driver that was missing that caused and it quieted down, but yeesh... Loudest system I have ever owned, for sure.
 
OP, Your temps are way to high. Something has to be wrong with the application of the heatsink. Don't trust applications that you use in windows. They seldom give accurate information and are not reliable for setting min and max. Set your fan controls from inside the BIOS. My 1055T idles at 30c and 48c under load. I can barely hear the fans.
 
Old thread is old. I already have a coolermaster 212+ with idle temps at 30 and on load ~50c. rpm is ranging in 800-2000.
 
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