smoothjk

I have an MSI 790GX-G65, and I just got my Phenom II 955 back from RMA. My Zalman CNPS9700 fan, by default, blasts full speed really loud. In the past, I've been able to overcome this by going into the BIOS and doing CPU Fan Smart Target (or whatever it's called). Then it spins at low speed unless it starts getting really hot.

But for some reason, no matter what I do--BIOS or SpeedFan--I can't adjust the fan speed. Is it because the fan is 3-pin and not 4-pin? Do I need a converter or something? In an ASUS board I used, they allowed you to select whether the CPU fan was a 3-pin or 4-pin, but this MSI one doesn't seem to have that option.

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My secondary (GF) system:
- MSI K9A2 CF v2
- Athlon II x2 250 (@3.4GHz)
- 4 GB G.Skill 1066 RAM
- Geforce 9600GT w/Accelero S1 rev2
- WD Caviar Blue 500GB
- OCZ StealthXStream 500W
- CM Gladiator 600 case

mmparkskier

Is the fan connector on your motherboard a 4 pin connection? If so, you need a 4 pin connector on your fan. Did you plug the CPU fan onto the CPU fan connector (rather than NB fan, PSU fan, et cetera)? Just going over the basics.

How are you temps? Is the HSF seated properly?


EDIT: I have searched for a while for a 3 to 4 pin fan connector. It's just not possible.

3 pin fan connector pinout v. 4 pin fan connector pinout.

I have even tried bridging the "sense" and "control" pins on the 4 pin connector, and plugging it into a 3 pin, but this changed nothing.

Hope this helps.

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We Are Gr33n Machine

Sethy666

Just read the above post - agreed. Check where your cooler plug is attached and make sure its in the CPU fan header

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smoothjk

It looks like that first colored drawing...the mobo has 4 pins (with a little vertical plastic piece around the first three). In the past, I've had mobos like these where if you just put the 3-pin fan in the plastic piece pins, it would work normally. Not sure why this mobo insists on blasting full speed--maybe this is an excuse to get a better cooler haha.

AFAIK, the cooler always had a 3-pin. Mine worked fine on previous mobos, but for some reason, this one seems to be picky about how many pins there are.

__________________
My secondary (GF) system:
- MSI K9A2 CF v2
- Athlon II x2 250 (@3.4GHz)
- 4 GB G.Skill 1066 RAM
- Geforce 9600GT w/Accelero S1 rev2
- WD Caviar Blue 500GB
- OCZ StealthXStream 500W
- CM Gladiator 600 case

smoothjk

It's plugged into the CPU fan slot and the temps are in the mid 30s. It has 4 pins available, but in the past, having a 3-pin fan didn't seem to matter. I guess this mobo is pickier about it...maybe it's time for a Xigmatek Dark Knight, which I know has 4 pins.

__________________
My secondary (GF) system:
- MSI K9A2 CF v2
- Athlon II x2 250 (@3.4GHz)
- 4 GB G.Skill 1066 RAM
- Geforce 9600GT w/Accelero S1 rev2
- WD Caviar Blue 500GB
- OCZ StealthXStream 500W
- CM Gladiator 600 case