They shipped a HSF with a wrong fan??

[theplanb]

A few weeks ago, I bought a Justcooler P-8000 HSF.
It's supposed to come with a 80mm fan rated @ 38CFM, 0.15A, 28dBA and 2800RPM.

Today, I finally got to boot up the new system and try the heatsink out.

When I first turned the system on, I was surprised to hear quite alot of noise coming from the fan on the heatsink.

But this can't be, because the fan was rated at 28dBA and that was definitely not 28dBA I was hearing.
On the fan monitoring bios menu, it indicated that the fan was spinning at about 4000RPM - 4600RPM , where it should've been spinning at 2800RPM as rated. I rebooted the system and checked the figure couple of times more, and got the same result.Then I stopped because of fear that the fan might draw too much current from motherboard and damage the fan header.

Imagine a 80mm fan spinning at 4500RPM and making a hurricane noise..

Anyways, no wonder it was making all the noises. So I checked out the sticker on the fan, and It was written as 0.42 A, where the speification on the back cover was written as 0.15A!!

Now I'm thinking that they put a wrong fan on the heatsink. Can this be possible though..?
The fan sticker clearly says "Justcooler" brand name..and the model number of the fan is MGT8012YB-O.

Frankly, I don't want to send back the heatsink and fan, because it's just not economically sound to spend the return shipping just to check/change the fan.. and I don't want to take out the heatsink from the motherboard, risking to crack the core.

Maybe I can send the fan only, but what guarantee is there that the supplier will replace it.

Can you guys please tell me what options I have, and recommend me the best solution for this problem..?

 

[techweenie]

Have you contacted the vendor yet? If it's their mistake, and their a descent company they should cover the shipping cost, and give you the proper fan. Maybe even send you the new fan, and then you can ship the old one in the same packaging.

If they don't make things right, then I would pursue it with your credit card company. In the mean time, find a better vendor, and order the fan through them. At least that's what I would do.

BTW - What company did you order this from? I would think that they would try to make things right, as it was their goof up. Good luck, and let us know how it goes...

 

[theplanb]

Thanks. I contacted the vendor, and he just replied that all his stock, including the one in his PC have the same fan. He's contacting his supplier whether they are willing to re-supply the fan without charge.

But he also said that the fan is still considerably quieter than other fans.
I'm not sure how fast his HSF is spinning though.

Well, I guess there are couple of possibility here.
one is.. I got the right fan, but it's apparently louder than I anticipated.
although it still doesn't explain why the fan is spinning a lo faster than it's supposed to.

Maybe the mobo RPM monitor is buggered, or there is some kind of option that I can adjust the speed of the fan which is highly unlikely. I've never seen a bios option that let me adjust speed on the fan.

can this fan be variable speed fan? Well, I read a revie on the HSF, and there was no mention of it, so I doubt that's the case.

Maybe the fan header is mal-functioning, and giving the fan more than 12V.
I wouldn't know, this is the first booting for the mobo

Another possibility is that the manufacturer changed the fan of the HSF without changing the specification fine print. Hmm..



Well, all I can do is waitfor the vendor to tell me how it went with his supplier.

 

[FlowerMan]

Seeing as to how its made by an el-cheapo manufacturer, I dont doubt that the fan could have been switched after the specs were printed. How much did you spend on that sucker? I saw it for sale for $31... LOL It cant be a variable fan unless you see pot, rheo, or set of resistors attached to it.

0.15A @ 12V produces only 1.8W... so I think that fan label was also printed before the fan was changed. A 3.5k-5k fan would have 2+W I doubt the fan header is supplying more than 12V; I've never heard of that happening. A quick fix for you would be to run the fan at 7V. To make that kind of noise... the fan would have to be around 2.2-2.4W, so running it at 7V would give you ~1.4W, which would be much quieter.

With your kind of experience (Over 20 active threads started by you!), I'd expect that you would have made a wiser decision with your HSF purchase...

 

[theplanb]

Thanks



<< With your kind of experience (Over 20 active threads started by you!), I'd expect that you would have made a wiser decision with your HSF purchase... >>



Sorry to make a lot of threads.. I'll try to refrain myself from now on.

Well, it was either that or Volcano 6Cu given my budget.. All around A$30 (US$15).
And.. noise was the most important thing (lol.. how ironical..) so I went for the justcooler with 80mm fan and lower dBA rating.. with less performance..
And the damn thing (sorry for the language, i'm very angry with myself) is a hair dryer.
If I can't get a new fan from them, I'll replace it myself with a different fan.

 

[FlowerMan]

You must be Canadian (I am a CAN citizen, although living in CA, USA)

You can just run the fan at 7V instead of wasting your money on another fan

 

[BeauJangles]

Be careful though, running at 7 volts produces considerably less air.

 

[FlowerMan]

Yeah, it does produce less. Just watch your temps for the first day to see if it is suitable. If not, get a better fan.

Lets assume the fan as it is now at 12V produces around 40CFM. Running at 7V, it would produce ~23CFM. That's decent for non-OC, IMO

 

[theplanb]

No word from the seller yet
I'm not prepared to mod the fan until i know for sure that I don't have to send it back.
I have a different fan coming from other source, which should be here in a few days.
That should keep theCPU going until the matter is resolved. (If..resolved)
Thanks for all your advises.
I was just thinking.. is Watt = Voltage x Ampare?
If so.. that means this fan is 0.42 x 12 = 5.04W?
Isn't taht a bit high to plug into the mobo fan header?