Sapphire Radeon HD 7950 one fan acting weird

[RedRound2]

I have a Sapphire Radeon HD 7950 OC 3GB Card in my rig

Today I noticed that one of the fan wasn't spinning.

I took the card out, cleaned it and re inserted it and still no use.

Then I checked MSI AB and increased the fan speed to 70% and the second fan started spinning. I then noticed whenever the setting was above 65% its starts spinning

I tried resetting the drive to its defaults and still no luck.

I would appreciate if someone help me figure out what's the problem as this wasn't the case about 3 months ago

UPDATE: Also the fan spins for 2 seconds when the system starts up
I just found out it's not windows because I booted into hackintosh and it's the same

My rig:

Intel Core i7 3770K 4.1 Ghz
Asus P8-Z77 V PRO
Corsair Force GS SSD
2 HDDs
Corsair HX850 PSU
Sapphire Radeon HD 7950 OC 3GB
Corsair Vengeance 8GB RAM

[jaffacakes]

Try resetting the bios and see.

[ShadowCaptain]

I would assume that as you increase fan speed it increases the voltage applied to the fan

 

Perhaps below a certain voltage the fan will not spin, is there a way to up the voltage?

[FireFox]

Did you rotate the fan manually when you had the video card out of the system, just to make sure nothing is restricting it.

[Bagmup]

Might be dry and need a bit of lubrication.

[RedRound2]

Did you rotate the fan manually when you had the video card out of the system, just to make sure nothing is restricting it.

Yes I tried that

[RedRound2]

Might be dry and need a bit of lubrication.

How do I do it?

[FireFox]

Yes I tried that

 

Ahh OK, worth a try.

 

How do I do it?

 

If the fan spins fine manually then lubrication or lack there of is not the problem.

[Bagmup]

Ahh OK, worth a try.

 

 

If the fan spins fine manually then lubrication or lack there of is not the problem.

Well if it spins up when a lot of voltage is applied, that would indicate to me that it is a bit dry and won't spin with lower voltage.

[FireFox]

Well if it spins up when a lot of voltage is applied, that would indicate to me that it is a bit dry and won't spin with lower voltage.

 

If that is the case then something must be causing a higher resistance because if you can move the fan perfectly fine with NO resistance then lubrication is not the problem.

 

If the fan was slightly harder to turn compared to the other fan then fair enough but since it doesn't and in my opinion lubrication is not the problem since it CAN spin with no resistance.

[Bagmup]

If that is the case then something must be causing a higher resistance because if you can move the fan perfectly fine with NO resistance then lubrication is not the problem.

 

If the fan was slightly harder to turn compared to the other fan then fair enough but since it doesn't and in my opinion lubrication is not the problem since it CAN spin with no resistance.

Ok, you're the boss...

[FireFox]

Ok, you're the boss...

 

I didn't mean to sound like a prick but if the fan spins perfectly fine I really don't see how lubricating will solve the problem.

 

Any chance that you could take pictures which may help us see if anything is a miss?

[RedRound2]

Try resetting the bios and see.

 

I just tried it and no luck....

[jaffacakes]

I just tried it and no luck....

[harrynowl]

Do they spin at equal RPM when you set it to 70%?

 

I had a Sapphire 7870 Dual-X with this issue and it'd reach 85c+ and get to 100% fan speed so I just contacted Amazon support who were like "yea, ok here's a refund have a nice day"

 

I'd try RMA it as I think taking apart sapphire cards does void warranty (sticker on screws)