MSI's 875P/865PE boards runs fans at full speed? Retail HSF @ 5000 RPM!

[adhoc]

Has anyone noticed this?

It as if the CoreCell chip isn't working. If I boot up my machine, the fans are blazing as if they want to transport my desktop - and they will stay that way until I start CoreCenter. Then the fans turn WAY down in RPM to a much more tolerable level.

 

[jamoore9]

Two things probably going on:

1. Most (90%) computer case fans and cpu fans are ball-bearing (as opposed to sleave-bearing). They are as a consequence more difficult to get to start spinning. Most fan control systems (ie, thermistors, rheostats, fan buses, motherboards, power supplies, etc) will always start the fans at the full 12V power, then decrease as the system warms up. This guarantees that the fan will start, absent another failure. If it were to power up with corecell initiated and the fans at all, say, 5V instead of 12V, then one of more fans might not start at all and you'd have a serious heat problem to deal with, possibly to the tune of fried components.

2. Many users aren't going to use Corecell because they prefer to manage their fans or temps themselves. So the board (probably) defaults to full 12V power to all fans. That part is just a guess though.

 

[adhoc]

My main gripe is that the CoreCenter software has to be loaded in order to take advantage of the fan speed adjustments (among other things of the CoreCell technology); if CoreCenter is not run, it seems that CoreCell doesn't work as advertized (at all). I was hoping for a hardware solution, rather than a software one...

For instance, if I boot up windows, but I don't log in, the fans will run full blast until I log in and CoreCenter is started (via the StartUp folder under the Start menu). It just seems an inefficient way to rely upon. I know many hardware manufacturers have hardware (via BIOS) capable fan and voltage adjustments, I guess MSI just hasn't gotten theirs to work in the BIOS.

 

[adhoc]

Bump, as it seems more people have the MSI NEO2 boards now...

Anybody see anything similar to my observations?

 

[mechBgon]

An Intel retail HSF can reach 6000rpm?! :Q Daaaang, can you measure the actual voltage on the +12V fan line and see what it's reading?

 

[adhoc]

You know what? That is a typo; I re-checked MBM, and the CPU fan runs @ 5000 RPM, and the NB fan runs @ ~6000 RPM (I've changed the topic, sorry about thiat!)... BOTH are supposed to be adjustable by the BIOS....

 

[mechBgon]

Ok, but I thought the Intel stock HSF units had thermal fan regulation and would ramp the fan speed as needed, starting in the 2000's. In fact, it's in their tech documentation last I looked. The fan should not run at wild speeds unless its thermal probe is really hot. Do you have a 3-pin-to-4-pin adapter that you could use to power the Intel fan directly from the PSU, just to see if it runs at a noticably-different speed?

 

[adhoc]

Well, I had a Gigabyte 8KNXP before this MSI, and the CPU fan speed was always around 1500-2000 RPM, with the same CPU and HSF. As far as fan regulation, I thought it was the motherboard that enabled the capability (as long as you have the 3 pin/3 wire fans) in terms of voltage levels, unless the fan had a thermal probe on it physically...

I could definately try to hook it up to the PSU and see if it changes...

By the way, I've looked at MBM again, and now the CPU fan is @ 5400 RPM, and the NB fan is @ 6500 RPM (!!!!)

ACK! Too much noise!

 

[mechBgon]

Intel's documentation indicates that the fan has a thermistor on the fan hub, see page 93 of this PDF file. What does MBM report for your 12V voltage there?

 

[PClark99]

Maybe this has something to do with the temperature readings on the board.

The same 2.4 chip that runs 40C on my albatron or my old 8INXP now runs at 60C on my Neo2.

 

[adhoc]

Following the idea about an on-fan thermistor, I sprayed some chip-cooler on the HSF while the computer was running, and the speed of the fan did not change at all. So either there is not thermistor, it is broken, or the Fan is supposed to be controlled by the motherboard... The latter seems to be the case because the fan was working correctly with my 8KNXP, or if I run CoreCenter (which controls fans, voltages, etc via software).

By the way, how do I use MBM to check the voltages supplied to fans?

 

[Jeffph]

 

[Jeffph]

MSI's NEO reads approx 10 C higher than my old 4pea+ board. i think the sensor reads a bit high for both cpu and northbridge.

You cant use MBM to monitor the Voltage for the CPU and northbridge fan.

 

[acemcmac]

well... i thought i had seen everything until winbond reported the northbridge HSF on my IC7 at <checks one more time> 7,031 rpm's

its funny though. my crystal orb is at about 6000rpms according to the last time i checked and it's still louder by far. The only louder fan i have is my 40mm sunon... but thats another thread

 

[adhoc]

You cant use MBM to monitor the Voltage for the CPU and northbridge fan.

Thanks, that's what I thought... I've also just realized that after I've run MBM, my CPU temp is changed and locked at 64C until I reboot (via CoreCenter and Aida32).

 

[advantz]

Maybe the hardware censor is IN the core so the temp show a little bit higher, and this *maybe, I'm not sure* is the REAL temp???

Let's see if other 865pe boards having this situation...???