Forum Home
Press F1
 
Thread ID: 76103 2007-01-20 21:09:00 replace CPU fan heni72847 (1166) Press F1
Post ID Timestamp Content User
517925 2007-01-20 21:09:00 my CPU fan is making weird noises again
when i boot up the computer first thing in the morning
it gives a 'wiiirrrll' sound and only rotates at about 2000rpm
then after a while the sound disappears and it goes up to 5000rpm like it's supose to
i kinda want to replace this fan before it fails

i currently have one of those green AMD factory fan that came with the factory heatsink for my AnthlonXP 2000+
it's 6x6cm and 1cm thick and rotates around 5000rpm

due to my small case everything is too close together, getting a 3rd party headsink+fan would not be possible

i looked around but the fans shops sell all seem to be larger
is there some specific place that sell these AMD fans or any good alternatives that people have?
heni72847 (1166)
517926 2007-01-21 03:53:00 Make sure you have no dust in your case.

And make sure your cabbles are not in the way,
take it off the cpu carefully and clean it-pell back the sticker on the top of the fan and add a drop of sawing machine oil to lubricate the bearings in the fan do not put to much in-and give it a spin by blowing on it-make sure no oil leaks from it-you should have only added a drop or two no more.Stick the sticker backer-may have to sellotape it down.
Clean of the old thermal paste with a tissue and put some new thermal paste on.-both the cpu and the heatsink.

Or have you looked at the zalman heatskink range,coolermaster heatsink range.

Here are some;
Thermaltake Extreme Volcano 12, AMD XP3400+

Thermalright SP97 heatsink + Evercool 92mm highspeed Fan (EC9225H12B)

CoolerMaster HHC-L61 Silent HeatPipe, AMD XP2800+
memphis (2869)
517927 2007-01-21 04:49:00 Porous bearings are factory filled with oil using vacuum techniques, adding oil subsequently to a bearing after it has lost its oil is only ever a temporary measure, just to keep things going for a while.

It is possible to fit a 80mm fan to a stock AMD Athlon XP heatsink, it runs slower and is much quieter than a 60mm fan. The flow rate and cooling is about the same.

Dick Smith sell a Titan fan XH6437, I've fitted them to two of my computers, you can retro fit, if there is room, without removing the heatsink.

You may need to find suitable long self tapping screws if those supplied are not suitable
Terry Porritt (14)
517928 2007-01-21 09:47:00 um..how do u fit a 80mm onto a headsink with mount holes for 60mm fan?
also i've seen all these other fans too but they're mostly for case
how does a cpu fan differ from a case fan? and how can i tell if they provide enough air flow because of the different max rpm?
heni72847 (1166)
517929 2007-01-21 18:26:00 just go into dicksmiths and take the old fan with you......compare ti to what's on offer......if you dont find one similar then go to another shop....fans are cheap and they are VERY necessary.....it soun'ds to me like the bearings are shot in your fan......REPLACE it .....unless you want to risk cooking the cpu of course...... drcspy (146)
517930 2007-01-21 18:58:00 um..how do u fit a 80mm onto a headsink with mount holes for 60mm fan?
also i've seen all these other fans too but they're mostly for case
how does a cpu fan differ from a case fan? and how can i tell if they provide enough air flow because of the different max rpm?

The stock AMD XP 2000+ heatsinks ie the units that come with the boxed cpu, have the fans secured with self tapping screws that very lightly tap in between the cooling fins. The size of the heatsink is big enough to take an 80 mm fan, but with the DSE Titan 80mm fan being thicker, then longer screws are needed. The screws supplied with this fan are not self tappers.

It may not be possible to fit this fan to other makes of heatsink.

To get air flows you need to look up the manufacturers specifications. The 80mm fan mentioned has about the same air flow as a 60mm cpu fan.

If as drcspy says, DSE have a 60mm fan that will do the job, then go for that if in doubt about fitting a larger one.
Terry Porritt (14)
517931 2007-01-21 19:28:00 okay..um.. my heatsink is 60x60mm
i was pretty sure it was stock..ohwell

looked at dse's XH6439
funny how i didn't come across that before

but this is once again labelled as a case fan
and also spins slower

is there a spec sheet or something for the stock AMD fan?
so i can compare the CFM..
heni72847 (1166)
517932 2007-01-21 21:53:00 If you do a bit of a search amongst suppliers, you will see that (standard, not exotic) socket A/462 heatsink 60mm fans run at about 4000 to 5000 rpm, and that the flow rates vary from around 20 cfm to 30 cfm.

The fans fitted to AMD XP heatsinks appear to be made by Delta Electronics Inc.

I have 2 removed from heatsinks, and replaced with 80mm fans.

Interestingly they are not the same, one is a model AFB0612MC, and the other is AFB0612HHC.

The specs are at this site for 60x60x13mm fans:

www.delta.com.tw

and this is the pdf file of specifications that can be downloaded:

www.delta.com.tw

One fan is 3600rpm at 18cfm and the other 4800rpm at 25 cfm.




Case fans tend to run slower, so as to reduce noise.

The XH6437 is quoted on the DSE site as 3000rpm/37 cfm.

Very roughly the flow rate of axial fans is proportional to speed times diameter cubed, but will also vary according to blade design, chord length, etc, so it is possible to roughly estimate what a fan will do by scaling from other known data.

Heat transfer is a function of flow rate and flow velocity. The flow velocity of the 80mm fan is lower than a 60mm cpu fan, but is has more flow over a bigger area, so the cooling is about the same. It will be quieter though.
Terry Porritt (14)
517933 2007-01-22 10:12:00 um..kinda find it annoying how i can't fit a 80mm fan
looked at some spec pdf from AMD and noticed that i got the small version of the heatsink so i can only fit 60mm
i could use a adaptor but wouldn't fit in my case

and the XH6439 60mm casefan from dse only delivers 18.4 CFM
its rpm is lower so that was expected

maybe i'll try it out anyway
see how much temperature difference there is
heni72847 (1166)
1