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kcool70
Copper

Studio XPS 435MT - problem with fan

I got 2 Studio XPS 435MT and on one of them, every minute the fan starts spinning at max rpm for a few secs. It sounds like a vacuum cleaner being turned on and it's loud as heck and extremely annoying!!

My other pc doesn't have this problem. I checked the bios version on both and configurations are identical for both my pc's.

What's going on with this one??

 

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63 Replies
bryanwxup
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Re: Studio XPS 435MT - problem with fan

My Studio XPS 435MT did the same thing on the first startup. After installing some apps, a few Windows updates and a few reboots, now the fans are relatively quiet (but still noisy overall). Only on one occaision recently did I hear the fan crank up to leafblower noise level, when i ran SyncToy to merge about 30,000 mp3 files all at once.

Overall the noise from the one rear case fan is unacceptable. I have a new one on order. I'll post a review if the noise level is any better. Here it is: http://www.quietpc.com/gb-en-gbp/products/92mmfans/x-rw-92r

I found the idea from this guy's post: http://www.voidware.com/index.php?option=com_content&task=view&id=43&Itemid=2.

Good luck!

kcool70
Copper

Re: Studio XPS 435MT - problem with fan

Thanks for the information on upgrading the psu and fan. I may consider it if I'm unable to get this resolved with Dell support.

Do you know if there is a heat / fan speed monitoring software that comes with the pc?

It's software that usually comes with the motherboard (that's if I put one together myself).

oc1
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Re: Studio XPS 435MT - problem with fan

I have an XPS 435MT as well that has a loud fan. Very disappointing. All my Dells until now have been very quiet--which is why I chose to buy another Dell. I decided though that it's not worth messing with Dell support over this issue and instead have purchased a quieter fan. Hopefully it will come soon and I can quiet the beast. Here's what I ordered: http://www.endpcnoise.com/cgi-bin/e/std/sku=nexus92mm.html based on the size info on this thread.

houmanator
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Re: Studio XPS 435MT - problem with fan

hey Brian, how did that Xilence fan worked out for you. I ordered one, I was hoping it's the magic solution to the noise problem. 

bryanwxup
Bronze

Re: Studio XPS 435MT - problem with fan

Hi, actually 2 problems:

- The Xilence fan moves 27 CFM and the rating on the dell installed fan is 75. I didn't care to look until I plugged in the Xilence and noticed almost no airflow at the same RPM.

-The CASE is the bigger problem. I noticed that with the Xilence fan installed some of the noise was still there. The constant humm is from the case mount.

So, I ordered some gummi case mounts of of ebay for $1. I'll let you know how they work out:

http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=310089510458

kcool70
Copper

Re: Studio XPS 435MT - problem with fan

Looking to replace the fan as well. Please let me know how it works out.

Should I go with the Xilence or this Nexus one?

oc1
Bronze

Re: Studio XPS 435MT - problem with fan

I got the Nexus fan from endpcnoise.com in Vancouver, Washington. It's rated 27 CFM. The fan that I took out of my 435MT is rated 70 CFM. But I don't think it was running that fast. Based on a very subjective feel of the flow of air on my hand, the Nexus fan right now is putting out about the same flow.

I was a little worried about installing it, but called endpcnoise and talked to someone there. He was extremely nice and helpful and said to see if the CPU has its own fan (it does) and if it does, go ahead and install the Nexus and see if the computer ever really needs to crank up its flow.

The good news the computer is now silent. At least very reasonably quiet. I used to be able to hear it outside the room. Now I can't. It's just a very low hum now when it's at my feet. I'm completely satisfied.

That said, I should point out that I haven't really put the computer to any hard work yet. I'm mostly running Office applications--I work at home. The real test will be when I work on a video or when summer rolls around and my office heats up into the 80s (I don't have air conditioning). I'll report back if I notice any problems. I'm definitely keeping the original fan ...

 

 

bryanwxup
Bronze

Re: Studio XPS 435MT - problem with fan

I bought these little plastic pins called NB SLICS that dampen out the sound transferred into the case. I would say with the stock fan it is about half as noisy at the low fan speed.

I still have not yet installed the Xilence because of the lower CFM rate. I am concerned that it may get too hot inside the case, however I am goign to try and install two Xilence fans, one in the front and one in the back when I have some free time (not soon).

My main concern is when the fan really speeds up, like when I'm doing any HD video editing, or when I have multiple resource-hungry apps open simultaneously for graphics (Photoshop, Illustrator, Dreamweaver, PLUs the usual Outlook/Firefox/iTunes that are always on). I don't want to have the little fan pumping the heat out when I have no idea whether the fan speed is physically temperature controlled or controlled by CPU clocks.

With my old ASUS machine, I could tell the fans when to rev up, by temp or by CPU clocks. I have yet to find that spec in the Dell machine's BIOS or manual(s). Anybody know?

oc1
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Re: Studio XPS 435MT - problem with fan

I've been running my Dell 435MT now for a week with the Nexus fan. I've installed a software application that gives me the temperatures of the cores. They're all running from 39 to 44 degrees Celsius, which I understand is normal. So far though, I haven't really done anything like video rendering that really puts a load on the processors. When I get around to that it will be interesting to see how well the Nexus fan does in keeping the case cool.