Ram Fan in 8890

Why would you do that? The 8890 runs hot as it is, it needs all the cooling it can get.

-Hal

If you mean a slight ringing noise, there is a tutorial in the forum with steps on how to silence it. I never did it since I've never heard mine; the only fan I hear are the bottom fans that force air over the CPU.

-Hal

got a question why would you pay that much of money for a pentium 4? Also i hate fan noise too but why in earth would you buy a pentium 4. If u want em low noise notebooks. Pentium M. IN a matter a fact a dell m70 is just as fast as your sager or even faster! Did i mention its quiet. Anyways back on topic i think you should not remove it like he said^^^^^^ you need all of the fans you can get for such a power hungary machine!

ooo im happy u enjoy the machine! Hey apply artic silver everything should be much cooler and will be more stable !

That's the biggest load of crap I've heard in a long time. Will it run cooler with AS5? Marginally (~5*C at best). Will it be more stable? No. What in the hell gave you that idea?

brinksw: how are you recording the temps? Using Mobilemeter? If so, don't bother. It's not telling you anything of any significance.

lol...im

Geeeeeeeeeee........
Now if it "Burns up" "Who aare you goning to call?".

I don;t think that it will be covered under warranty. Actually, I'd say it was a really really bad venture.

I get that laptop<3 is a troll

Some facts to debunk laptop<3 first:
1. The CPU is only part of the overall speed of a computer. Sager/Clevo use the P4 chip as part of an overall strategy to produce high performance laptops. If you compare say a current 9860 to a current P4M the 9860 will outperform the P4M system as an overall system. Just testing CPU does not give any real-life indication. I know my 8890 still outperforms all but the most current crop of laptops.

2. Most laptops have some form of thermister control built into them. If you did your homework and understood a bit of process control theory (obviously not ) a simple on-off (sometimes called a bang-bang controller in the industry) hysterisis based controller is adequate to keep the internal temperature of a laptop within specs. As to how Sager do it - they use a Hitachi H8 microcontroller inside the laptop which measures internal temperature. That CPU controls the fan. For an 8890 typical setpoints are 45 degC fan off. 55 degC fan on. Other versions may have different setpoints. However the principle is the same. AS will not repeat will not affect the temps that the fans cut in and out. All the AS does is improve the thermal conductivity between the CPU and its heatsink. Simple thermodynamics (yes study again laptop<3, you will not find this stuff in a "Spot the Dog" book - don't mess with me son, I have more degrees and knowledge than you've had hot breakfasts ) would then give you the heat transfer equations to allow you to realise that the CPU will cool quicker because of the thermal paste. (To quote a line from UT2003 - "AND STAY DOWN" as aussie anililates laptop<3 )

Now to some other facts surrounding the RAM fan:
1. That fan was placed there by Clevo to stop a hot spot starting near the RAM chips. Whilst the main fans are efficient at removing heat the cannot stop localised hotspots. You will notice the heat spreader under the keyboard has a thermal pad which touches one of the RAM SO-DIMMS. That is there to help remove some heat from the RAM. The fan is there to ensure additional cooling is provided incase the heat spreader does not get rid of all the heat. You also have to remember that the 8890 is spec'd to handle 2GB of RAM. That extra heat requires the small fan. You also have to realise that some people run their 8890's in hotter climates than you might so that fan saves our bacon (rather than fries it ).

2. Mobilemeter will give you an indication of how the temp inside the system goes between 45 - 55 deg C. If you are running more intense apps then you will see the temps rise to about 60 degC. It also provides temp indication on hdd drives if they are not in a RAID config.

3. Fan noise. When you followed the fan quietening tutorial did you use the material that I suggested? Secondly did you leave the two screws out that hold the fan in place? If done properly the 8890 will be quieter or the same noise as other less powerful laptops. If you want I still have some of the material I used to do mine. If you ask nicely and PM me your postal address I will send you some.

I apologise for the poor quality pics they were taken on my phone camera
and also don't take notice of the fact that the bluetooth module is upside down in the last photo. It should be mounted the up the other way.





Note that the two screws originally holding the fan in place are not replaced.
The foam and heat spreader hold the fan in place.
It was the resonance between the fan an mobo that caused the noise in the first place.
By mechanically isolating the fan from the mobo the harmonics are changed and hence the resonance between the two is reduced.

Listen to Aussie, he is your friend and knows more about that 8890 than anybody that I have been aquainted with. Bottom line is that we are all trying to keep you from frying the machine.

Material is addressed and ready to post (prob tomorrow).

Thanks for the compliment G.
About the only thing I have yet to do with the 8890 is to reverse engineer the BIOS and H8 code

Just as an aside to the thread, I will be loading Solaris 9 2/05 x86 via vmware in about 2 weeks time. Did load it natively on the 8890 but it could not recognise the Promise RAID disk controller (even though the soladmin notes says it does). Decided vmware would be a far less hassle. As my need for Solaris is only for legacy support I don't need blistering speed and am hoping vmware + 8890 + RAID will be fast enough. Will post results once I have them.

Can you order a replacement?

Does anyone know if you can order a replacement fan for this? I heard a strange noise inside the laptop the other day, opened up the top and noticed that half the fan blades had broke off and were just getting knocked around inside the fan casing. I tried finding a thread with that info but no luck.

Thanks for all the tips!

stoicite

You been feeding your 8890 rocks or something

Give Sager a call. They may be able to get you a replacement.