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Water cooling Asetek 545LC: which fan to use with it?

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July 7, 2012 12:50:22 PM

Hello, inside my new SX79R5 SFF I've got an Intel i7-3820 and an ASUS GTX680.
Even if I won't overclock the cpu I've decided to go with a water cooling solution by Asetec, the 545LC is just perfect for the little space inside the Shuttle barebone.

With this water cooling I'd like to use a NOCTUA NF-B9 PWM because it is said to be very quiet, 17.6 dBA, MAX RPM 1600, airflow is 37.8 CFM

The question is: is it enough? Do I need more airflow and/or fan speed (2000/3000 RMP ??!) for that processor even if I won't overclock it?

If I need something else which fan whould you choose? Why?

Tks, Mag
a b K Overclocking
July 8, 2012 7:02:50 AM

your really wasting your money and time going for that "water cooling"

prebuilt water coolers aren't as good as some believe em to be
your better off sticking with what you have at the moment
Related resources
July 8, 2012 8:00:33 AM

nna2, tks but I've already got it because, as MouseTrap said, non everything is always needed!!
MouseTrap, yes, that review is exactly where I got the idea to get that water-cooling.
I had 3 Shuttle barebones in the past and actually they can be noisy when under stress...the problem is the review doesn't mention which fan was used.
So, I read this http://www.quietpc.com/products/92mmfans and I've decided to go with NOCTUA, it is really silent but what if it is so silent, and ineffective, that my barebone mealts!??!?!
a c 190 K Overclocking
July 8, 2012 8:50:39 AM

There is a fan roundup at the top of cpu/components section if you want to check some data out
and I agree, its not always because you need to do something, sometimes its because you want to :) 
Moto
July 8, 2012 11:14:48 AM

Tks Motopsychojdn, I'll have another look but they are not 92mm fan.

I had another look at this http://www.motormice.com/reviews/SX79R5/cooling.htm as MouseTrap suggested and zooming on the image I could read High-End on the fan used with the 545LC. I googled it and I found MotorMice used an Asetek Vapochill Micro 92mm (3800RPM, 67.0 CFM, 35dBA) while the built-in Shuttle I.C.E. cooling has a 92mm fan: 3200RPM, 50.0CFM, 43dBA.

With these numbers I feel the NOCTUA's are too low, what do you think?
July 8, 2012 11:20:54 AM

I think you are correct, Those Noctua's fans are not going to do the trick like you were hoping... I would try finding something with higher static pressure. Maybe even something at a set RPM but in the noise level you would like to be. This may open up your options a little more. Just a thought!
July 8, 2012 11:43:21 AM

Tks MouseTrap. Well, I've purchased the Noctua yesterday, so it's too late to cry.
I've now ordered the Asetek Vapochill Micro 92mm used in the review and a Zalman ZM-F2 PLUS 92mm fan (55.9CMF, 2800RPM and 36dBA).
The review tests the Asetek on a Intel i7 3930K 6 cores cpu overclocked at 4.4GHz.
I'll test all 3 fans as soon as they arrive on my stock Intel i7-3820, posting here the results for future reference.
July 8, 2012 12:05:08 PM

magdyreda said:
Tks MouseTrap. Well, I've purchased the Noctua yesterday, so it's too late to cry.
I've now ordered the Asetek Vapochill Micro 92mm used in the review and a Zalman ZM-F2 PLUS 92mm fan (55.9CMF, 2800RPM and 36dBA).
The review tests the Asetek on a Intel i7 3930K 6 cores cpu overclocked at 4.4GHz.
I'll test all 3 fans as soon as they arrive on my stock Intel i7-3820, posting here the results for future reference.


Sounds good! I look forward to the results.

Good Luck!
July 12, 2012 9:18:06 AM

After much research, I just ordered the Scythe Kama 92mm PWM Fan (DFS922512M-PWM) to go in the stock ICE radiator
(google: Shuttle 92mm fan) you'll see lots of reviews, newegg, etc etc

It seems to have the best airflow/rpm compared to the others, and was confirmed to be very quiet.

Is the 545LC really that much more efficient than the built in Shuttle heat piped ICE?

I'd like to possibly find a quieter 50mm fan for the 500w PSU next. My super sonic hearing can hear it. I'm not sure if that's possible yet. (just stared researching).
July 12, 2012 9:58:55 AM

JazJon, thank you for the suggestion. I'll test and publish results of the purchased fans this week. About your question, the ICE solution is quite effective I think; I'm trying to keep my barebone as silent as I can, few db could make the difference and I'd like to reach the optimum compromise.
Here you have some 50mm fan with all the necessary info, noise, airflow ecc.
Do you know the built-in 50mm fan specs?
July 12, 2012 10:12:21 AM

magdyreda said:
JazJon, thank you for the suggestion. I'll test and publish results of the purchased fans this week. About your question, the ICE solution is quite effective I think; I'm trying to keep my barebone as silent as I can, few db could make the difference and I'd like to reach the optimum compromise.
Here you have some 50mm fan with all the necessary info, noise, airflow ecc.
Do you know the built-in 50mm fan specs?


I'll post the results of my fan install as well. I just ordered from amazon and tracking says I'll get it next week. I'm pretty confident my system will be quiet but you never know.

I do not know the specs of the 50mm fan, and google didn't turn up much. I don't think it's that big of the deal actually. The main problem is the RPM pitch of the 92mm going up/down/up/down/up/down. One solution by the way is to set the MAX cpu to 50% under power settings in Windows 7. You'll have plenty of horse power for basic HTPC video watching, but you can easily switch to maximum performance profile when it's time to edit videos (or play a game)

By the way, since Windows Home Server is being phased out and not included in 2012, I've thought about having my Shuttle PC pull double duty as a server.
(Windows 8 has StorageSpaces Drive Pooling built in)

I found a mini PCIe eSata/mSata card that will allow us to hookup external drive enclosures. Google the: MPX-3132 (I emailed tech support and they confirmed it does 5 bay mSata connections) I'm ordering one special from the manufacturer directly.

If interested, See this thread:
http://www.mymovies.dk/forum.aspx?g=posts&m=151231&#151...
July 12, 2012 10:14:55 AM

magdyreda said:
Oh, here at http://www.shuttle.eu/it/prodotti/xpc-accessories/pc63j...
Shuttle sais:
Noise: <30dB at 50cm for 200W load
50mm fans at QuitePc.com can be 19/22 dB at maximum load...minus 10 dB is not bad!


Nice, I should probably order one and try it. I don't want my PSU to over heat though hmmm It's all about the preasure/air flow, as long as it's nearly the same.
July 14, 2012 9:36:38 AM

Hi everybody,
I want to use this thread for some help from you experts about some questions I have.
question 1]
When setting the Fan2 Speed Control to a value of Ultra-Low Mode, Low Mode or Mid Mode and I start the PC, it seems that the fan is always set to Full mode and it's very noisy. I verified the RPM using FanSpeed and it's above 3000. This does look as if there is a problem ? Note that the CPU temperatures are about 37 to 42 Celsius. And the BIOS version is 1.07
When using 'Smart Fan Speed', it works correct although the fan is still a little bit noisy and the RPM goes a little bit up and down, which makes it sometimes a bit irritating noise.

question 2]
If I want to replace only the default 92MM fan with a quieter one, should I take a PWM version because the fan-connector on the mainboard has 4 pins ?
And which fan from this list should be a correct replacement ? I was thinking about the Zalman or Nexus who have a airflow from 40+.

question 3]
If I would take the 545LC which fan from this list is then the best based on your experiences ?

Some help / advice is needed.
Thank you all.
July 14, 2012 9:38:03 PM

Success! I replaced the CPU fan of my SX79R5 with the Scythe Kama 92mm PWM Fan (DFS922512M-PWM)

As far as the CPU fan sound, It's nearly silent and totally quiet enough for the livingroom. It's a barely can hear gentle sound you can barely make out from across the room. My Fridge and Wine Fridge in kitchen, and general city noise is all I hear from the living room now. (ignoring the PSU fan, more on that below)

Unfortunately my suspicions about the 50mm power supply fan are true. I can still hear a steady almost grind-y'ish prop noise coming from the PSU fan. I stuck a screw driver in to stop the 50mm from spinning, and what I said above was true for the 92mm CPU fan now being quiet.

I'm going to order a 50mm fan, replace it, and hope for the best! Hmmm how do I know if the PSU 50mm fan is 3 or 4 pin?

The specs link you posted says:
<30dB at 50cm for 200W load
50mm ball bearing fan with thermal Fan-speed control

Doesn't "thermal Fan-speed control" mean it's 4 wires?

The one 50mm fan QuietPC sells is only 3 pin.
http://www.quietpcusa.com/Rasurbo-Ultra-Quiet-50x50x10m...

I'd hate to open it all up and find I can't wire up correctly.


StefH said:
Hi everybody,
I want to use this thread for some help from you experts about some questions I have.
question 1]
When setting the Fan2 Speed Control to a value of Ultra-Low Mode, Low Mode or Mid Mode and I start the PC, it seems that the fan is always set to Full mode and it's very noisy. I verified the RPM using FanSpeed and it's above 3000. This does look as if there is a problem ? Note that the CPU temperatures are about 37 to 42 Celsius. And the BIOS version is 1.07
When using 'Smart Fan Speed', it works correct although the fan is still a little bit noisy and the RPM goes a little bit up and down, which makes it sometimes a bit irritating noise.

question 2]
If I want to replace only the default 92MM fan with a quieter one, should I take a PWM version because the fan-connector on the mainboard has 4 pins ?
And which fan from this list should be a correct replacement ? I was thinking about the Zalman or Nexus who have a airflow from 40+.

question 3]
If I would take the 545LC which fan from this list is then the best based on your experiences ?

Some help / advice is needed.
Thank you all.


1)
Yes, I can confirm there is a bug in the Bios it seems. My fan stays at FULL SPEED even if I pick the ultra low, low, medium, etc. My fan behaves normally if I leave it on auto. My previous Shuttle SX58J3 bios did NOT behave this way. (it actually obeyed the setting I gave it) Interesting, someone should report this bug to shuttle! Luckily I'm happy on Auto now that I have a quiet fan installed.

2) YES only but a PWM version or the motherboard can't control the speed of the fan and it will also be hard to wire up correctly. (from what I gather)

3) I don't think the 545LC is needed, I'm pretty happy with the stock cooler that is already a liquid heat pipe. Why replace one liquid cooler with another liquid cooler?? (unless someone can tell me why this other one is far better??)
July 14, 2012 9:51:24 PM

Hmmmm it says "You are not allowed to edit this message" so I guess I'll add one more thing here. (and ignore my poorly constructed sentence description above)

I wanted to add:

I found another site that sells the 50mm fan with a 4 pin adapter as an accessory add-on
http://www.acousticpc.com/rasurbo_50x10mm_fan.html
This might be good, I'll give it a shot. I feel better having the 4 pin adapter handy even if I'm not sure I'll need it or not yet. (I don't want to open it up twice)
July 14, 2012 10:12:39 PM

Again, I can't edit my posts for some reason so sorry for the tripe posts in a row. I wanted to add:

I can looked into the PSU and can make out some of the fan's info. It seems to say:
MGA5012XB-02

I only see TWO wires as well. What do I do if I open it up, and it only has two wires but I bought a new fan with three wires?
July 16, 2012 9:14:38 AM

Update:
As I said, I'm happy with the Scythe Kama 92mm PWM Fan. When my HTPC is very busy and or it's hotter than usual in the room itself, I do hear it spinning faster. It's still pretty quiet, and I'm happy you can't detect RPM changes. (no up/down/up down like the stock fan) Most of the time it's on the low RPM end on an average day though. I too would not mind another 3db lower in noise. It got me thinking and wanted to ask. Just how much more efficient is the Asetek 545LC compared to the stock Shuttle I.C.E. Cooler? If it's show to extract heat better/faster, that would result in a cooler CPU, which would keep the RPM's of the fan much lower. I think I might just try it if I can get confirmation it's truly worth the swap effort and cost. Thoughts?

EDIT: Looks like the link you provided above sold me on the Asetek 545LC.
http://www.motormice.com/reviews/SX79R5/cooling.htm
I glossed over it thinking I didn't want it, but now I do!
July 17, 2012 1:40:22 AM

I got a reply back on the 50mm fan for the power supply:

______________________

"Dear Jon,

Thank you for contacting us regarding the power supply fan.

Unfortunately the 50mm Rasurbo fan that we stock is not rated for power supply applications. The only fan that we stock that is rated for power supplies is the AcoustiFan Dustproof fan. The smallest one that we stock is 60mm. Power supply applications require a fan that can withstand more heat than a standard case fan. I have heard of people that install standard case fans in their power supplies. The problem with them is that they do not always last too long in a power supply environment.

In case you happen to not have electrical technician's training, I will mention that a person should be careful when working on power supplies. They contain capacitors that store electricity somewhat like a battery. Should a person accidentally ground out a bank of capacitors, it could produce a lethal shock. We recommend changing out a defective power supply outright as a unit rather than opening up a power supply and attempting to repair it. It is better to be safe than sorry.

Sincerely,

Quiet PC USA"
________________________________



So I can either risk it, or maybe I should do a side mount fan like the following example? (use a nibbler to cut a hole etc)

http://www.josephclemente.com/shuttle-kpc-k45

July 17, 2012 10:34:11 PM

Hi, here I am again. I've got 2 Noctua NF-B9 PWM and 1 Zalman ZM-F2 PLUS 92mm fan, I think this one is similar to the Kama got by JazJon.
Well, being my first time to test my pc I'd love anybody to suggest me what to actually test and how to.
I've got Intel(R) Extreme Tuning Utility and run the stress test for 5 minutes on my Intel i7-3820 (not overclocked), ASUS GTX680 and Asetec 545LC watercooling.
First I tested two Noctua in a push/pull configuration: 71°.
Then one Noctua...67°!!??! Why?!?!? Help me understanding that!!
Then one Zalman (pull) and one Noctua (push): 61°.
Then only the Zalman: 63°.
The problem with the push/pull configuration and the Asetec....there is no space for the DVD burner; I could force it in but I'm afraid to break the cooling tubes.
JazJon, quite disappointed we cannot get a silent 50mm fan, the side mount fan is smart but "hard" to look at!!

Now the questions:
1) Again...suggest, please, what and how to test it.
2) Both the Asetec and one fan are connected to the main fan connector (with a split connector). The second fan is connected to the second connector. Is it correct?
3) Speed fan writes, for example, fan1 1775rpm, fan2 1445rpm. Which one is which? It writes the same even if I've only one fan connected. Why??!
4) The max core temperature is 70°??? Or 100°?
Thank you!
July 17, 2012 10:38:06 PM

Wait, why do you need to hookup TWO fans? Help me understand why the DVD burner would be in the way.

I thought we replace the ICE cooler with the 545LC, and just hookup the one fan we've been using. (and you're done)

am I missing something? Tell me more about this push/pull stuff.
July 17, 2012 11:03:38 PM

Well JazJon, MotorMice's "SX79R5+Asetec" review used an Asetek Vapochill Micro 92mm fan (3800RPM, 67.0 CFM, 35dBA) and the built-in Shuttle I.C.E. cooling has a 92mm fan: 3200RPM, 50.0CFM, 43dBA.
Having got a NOCTUA NF-B9 PWM (17.6 dBA, MAX RPM 1600, airflow 37.8 CFM) I had the idea the airflow would be not enough to cool the cpu.
So I decided to try the push/pull configuration: one fan pushes the air to the radiator (in the middle of the two) and the second fan pulls the hot air out.
The solution didn't play as I expected but I'm not sure I made all the fan connection in the right way...SpeedFan is giving info I cannot/don't know how to verify...the pull fan show be faster then the push one. SpeedFan writes Fan1 and Fan2 with different speeds...which is which!?!?!
Oh, about the space, having two fan and the radiator, it takes so much space that the dvd recorder cannot be inside without moving the tubes...and I'm afraid to break everything!!??!
Sorry guys, new here...be patient!!
July 17, 2012 11:06:24 PM

Oh I see, so you added the second fan to the outside of the case. Maybe a good idea, but might add more noise. I'm thinking the Asetek will cool things SO much on it's own, the ONE fan will be at a constant low RPM so no second fan is needed. Just try one heh. My Asetek JUST arrived today. It was shipped from San Jose and I live in San Francisco so 1 day shipping nice. I don't think I have time to install it today though and don't want to mess up my Media Center TV recording schedule
July 17, 2012 11:15:37 PM

Well, I've got everything inside the barebone, that is the reason why no space is left for the dvd unit. Now it is time to sleep here, I'll continue tomorrow. Let me know how your Asetec is going. See you!
July 24, 2012 2:18:13 AM

Success with the Asetec installed!

-My average idle temp (just recording TV etc) WAS 57-60 degrees Celsius. (with the stock ICE)
-My NEW average temp with the Asetec water cooler installed is 50-54 degrees Celsius.

That's just enough difference to ensure the fan stays on low

My fan no longer spins up and everything stays silent. Before I'd occasionally hear the fan spin up to high but now I'm running cool and quiet. I'm happy, mission accomplished. I let the fan suck air "in" (like the instructions said to do) instead of out like it was. (and yes I'm using the new quieter 92mm 3rd party fan I installed previously still) I also replaced the Power Supply fan with the 50mm mentioned previously. It seems to push enough air and is dead silent. Install was easy, just cut, stripped, and crimped black/red wires together.

I now have a legit hush living room shuttle HTPC!
July 24, 2012 2:41:40 AM

UPDATE #2:
Looks like I didn't wait long enough. The new ave temp is 54-57.
The 50mm power supply fan is still noisy and spinning extra fast now. (hmm)

I think my next step is to take out the 50mm fan, and cut/nibble a 80mm hole in the side of the power supply/case cover, and not have ANY tiny fans.

I confirmed my machine is dead silent when I stick a screw driver in to stop the 50MM PSU fan.
July 24, 2012 6:29:56 AM

Great news indeed. Mine is 43-46 by an Intel app. Yes, the only noise coming from the barebone seems to be psu 50mm fan but I cannot complain actually, it is really dead silent.
Because everywhere is written to take extra care in dealing with the tubes, I had hard times placing player+hd inside. I had to flex the tubes and they are hard to deal with!
Yesterday, I stressed the system with Intel(R) Extreme Tuning Utility and the temp was around 62-65, playing games as Max Payne or Need for Speed has been a pleasure finally.
July 24, 2012 10:52:53 AM

Update #3, looks like the CPU is staying cool, but the over all temp inside the case is BURNING HOT! (like omg way too hot) I've left the case off, and everything is quiet again. I'm starting to have second thoughts on following the suggestion of having the fan suck air inwards instead of outwards. Should I try to reverse the fan or just go for the side cut hole fan mod of the PSU? I'm thinking that with the nice big fan sucking air OUT of the PSU side, it will also take out all the hot air built up from the CPU fan intake. (or should have BOTH fans sucking air outwards maybe? Thoughts?
July 24, 2012 11:22:58 AM

P.S. I may have been mistaken about the sudden noise being from the PSU fan, I think it's a mind game the way the 92mm fan echo's through the PSU. (since the fan is in the center of the case) Heat slow builds up until it turns the PWM to max speed.

So again, if I leave the shuttle case OFF completely things are staying totally cool and quiet. (as in UNDER 50 degrees!) hmmm
July 24, 2012 11:52:53 AM

Sorry for the triple posts, I'm not able to edit my posts for some reason. One more thing.......

The asetek site also says:

"Generally, intake is best for maximum CPU cooling. However, the best solution for you depends on your overall setup. The main idea is to have an equal number of fans blowing in, as there are blowing out. The cooler the air moving through the radiator, the cooler your CPU will be. See Stu's blog entry on air flow for more details."

That reinforces my idea of adding the second outtake fan for maximum quiet cooling and quite 24/7 HTPC operation.

a c 324 K Overclocking
July 24, 2012 2:48:25 PM

If you don't have an exhaust fan to get rid of the warm air, then you might consider this. SFF cases often don't have many fans and using your LCS as an intake is great for mid cases or ones with multiple fan I/O. In situations where there are only 1-2, you will want to apply for the best application for you.
July 24, 2012 10:08:36 PM

Thanks Rubix, it's all making sense now based on the push/pull links I posted above and your post.

Over Night update:
My temps are still staying BELOW 50 with the case off.

It seems I absolutely need an outtake vent in the small shuttle case.

Which option makes more sense to try first? I have two identical "quiet" 92mm fans to work with.

Option 1)
-I leave the Asetek fan as an intake, sucking cool air from outside, across the radiator, and into the case
-I cut a hole in the side of the power supply & case, hookup the second fan to suck our outwards, pulling the hot air trapped inside the case through the PSU and out the side

Option 2)
- I reverse the Asetek fan to Push air through the Radiator and out the back of the case
- I hookup the 2nd fan in-line with the other fan on the back of the case so it helps PULL the air out in tandem. (two fans working together) This might result in more air flow and will also suck hot hair out of the whole case in general.

Which method is worth a shot? The second option would be easier to do, and possibly easy enough to just "test" first. I'd like to ask first though before trying anything since it's not exactly easy to rip my system apart and don't want to lose TV recordings.

July 24, 2012 10:36:29 PM

Also, I was thinking maybe we could add a Duct to help channel/separate the cold/hot air mixes better. (if we are going to use the intake method)

Here's what a quick search turned up so far.
"Computer Case Side Panel Fan Air Duct, 92mm"
http://www.avadirect.com/product_details_parts.asp?PRID...
July 27, 2012 10:52:08 AM

Ok, so after some experiments, I concluded that for the Shuttle, it's best to have the fan's venting hot air OUT of the case instead of sucking cool air INTO the case. This is because the shuttle case is WAY too small and their is no secondary exhaust fan to keep the super heated air from building up all crazy hot. (DVD drive, and case will feel VERY very hot after awhile)

I now have TWO 92mm fans working together. One internal, attached to the radiator, "pushing" air OUT. One external fan "sucking" air OUT. I got the screws at my local hardware store. internal is powered via FAN1 and external has the power wire snaked through the popped out unused VGA hole powered via FAN2. I used a molex to fan wire adapter to power the Asetek water Pump directly. The RPM's stay around 1000-1200 and the CPU stays below 50 degrees C. The machine is not Whisper quiet, but it's a steady hardly notice type of sound that won't bug me. Success! (no need to cut a hole in the power supply to add a big slow yet)
July 27, 2012 1:58:28 PM

Hi everybody, I got an answer from Shuttle about my problem with Fan2 Speed Control using BIOS version 1.07


Please update the BIOS to the latest version and load the defaults
after successful flash procedure. Loading the defaults is a very
important step!!

http://download.shuttle.eu/Mirror/XPC/SX79R5/Bios/SX79R...


I did not yet test it.
July 28, 2012 2:16:03 AM

StefH said:
Hi everybody, I got an answer from Shuttle about my problem with Fan2 Speed Control using BIOS version 1.07


Please update the BIOS to the latest version and load the defaults
after successful flash procedure. Loading the defaults is a very
important step!!

http://download.shuttle.eu/Mirror/XPC/SX79R5/Bios/SX79R...


I did not yet test it.


I updated to 1.08, loaded and saved defaults, and even power cycled. The fan speed will still NOT be obeyed. I recorded a video even. We all need to open a support ticket with shuttle so this get's resolved. (I just did)

http://www.youtube.com/watch?v=yHjCO7lfSsE
(ignore the extra street cleaning noise in the background in the first part of video)
July 30, 2012 11:16:21 PM

StefH said:
Hi everybody, I got an answer from Shuttle about my problem with Fan2 Speed Control using BIOS version 1.07


Please update the BIOS to the latest version and load the defaults
after successful flash procedure. Loading the defaults is a very
important step!!

http://download.shuttle.eu/Mirror/XPC/SX79R5/Bios/SX79R...


I did not yet test it.


As I said, 1.08 doesn't fix the fan speed issue. I just got a response from the support ticket I submitted with Shuttle:

"Hi Jon,

Thank you for choosing Shuttle Computers.
We apologize for the inconvenience you encountered with your SX79R5.
In fact, you are the first one to report the fan issue to us.
After testing, we confirmed that the problem does exist.
We already contacted our BIOS team and they will come out with a BIOS update soon to fix this issue.
We will let you know when the new BIOS is released.

Once again, thank you for choosing Shuttle Computers!

Best Regards,
Tech Support

Shuttle Computer Group, Inc.
17068 Evergreen Place, City of Industry, CA 91745"
a c 190 K Overclocking
August 1, 2012 5:12:05 PM

Cool, manf finally owns up hehe, Glad to hear some form of resolution \is on the horizon mate :) 
Moto
a c 324 K Overclocking
August 1, 2012 5:23:40 PM

You should ask for a 'finder's fee' for bringing this to their attention. :) 
a c 78 K Overclocking
August 1, 2012 6:48:51 PM

hehehe :D 
August 1, 2012 10:41:22 PM

They are sending me a $10,000 check! (joking)

Here's the beta bios fix! I haven't had a chance to test this yet, since it's my HTPC/DVR (don't want to miss TV recordings)

"Hi Jon,

The BIOS team came out with a new BIOS update that fixes the fan speed issue.
We already tested it on our side and confirmed that the update solves the problem.
Since it is still a BETA BIOS, it can only be flashed under DOS mode.
Please refer to the following link for instruction of how to flash BIOS in DOS mode.
http://global.shuttle.com/products/productsFaqDetail?fa...

I tried to send you the attachment but failed.
It seems like your email server does not like the attachment content.
I uploaded the BIOS to our server and you can download it from this link:
http://us.shuttle.com/download/SX79_SmartFan.zip


Best Regards,
Tech Support

Shuttle Computer Group, Inc.
17068 Evergreen Place, City of Industry, CA 91745
us.shuttle.com"
August 1, 2012 11:35:36 PM

P.S. I confirmed that utility they recommend to create the bootable USB disk doesn't seem to recognize/work in Windows 7 x64.

Use this one instead:
http://www.sevenforums.com/tutorials/46707-ms-dos-boota...

I should be able to actually update and test this beta bios fan fix sometime to tonight
a b K Overclocking
August 1, 2012 11:38:52 PM

jazjon said:
P.S. I confirmed that utility they recommend to create the bootable USB disk doesn't seem to recognize/work in Windows 7 x64.

Use this one instead:
http://www.sevenforums.com/tutorials/46707-ms-dos-boota...

I should be able to actually update and test this beta bios fan fix sometime to tonight


that way has never failed me
saved my GPU a number of times
August 3, 2012 3:23:52 AM

Bios update worked, I'm now on Low instead of Smart speed. RPM's are at a constant 1220'ish and CPU cores are averaging 45C. My system is still quiet, but things are staying cooler since Low is a bit faster than the default Smart speed
a c 78 K Overclocking
August 3, 2012 9:40:18 AM

:)  great that its working out for you!
!