• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

MOSFETs hot?

S

signmeuptoo

Weaksauce
Joined
Jul 4, 2007
Messages
67
I asked this in a slower forum, but you guys here are some of the best minds when it comes to hardware and all, so:

I have a DFI LP nF4 SLI DR mainboard.

Everest is reporting that the "north bridge" (my MCP Chip, or is it?) at 49 degrees...

and my "motherboard"...

at 57 degrees.

Now, that motherboard temperature, is that from the MOSFET area?

How risky is it to pull off those cheap aluminum heatsinks and install something better? What would you recommend and how would you attach them?

How hot is too hot for those anyways, especially the MOSFETs?

If I were to change out the heatsinks, what could I use?

Thanks!
 
IIRC those little sinks are soldered aside each group of mosfets so it would be quite a PITA to remove, but possible, provided the sinks are not also epoxied to the fets. They do an adequate job and mosfets are designed to be able to operate at very high temps. 57 is about normal for those DFI boards. The temperature is taken by a thermistor close to one of the outer groups of mosfets so it is not a true reading of their temperature however. If you are having stability issues or just would like optimal cooling, small fans would be a better way to go.
 
I agree with Pilotron, adding some fans would be the best way to provide extra cooling to the MOSFETs. The problem with cooling them is that there's no standard mounting system, so the hole spacing and position could be different between manufacturers and even different models from the same manufacturer. I wouldn't worry too much about their temps though; FETs can handle quite a bit of heat. If it's holding back your overclock that would be a different story, but if you're not having any problems because of it then you shouldn't worry.
 
Thanks guys! I'll find some fans then. I'm not having stability issues, I just don't want the board to fail, I can't afford to build a new system!
 
If you're really worried about it, you should pick up one or two cheap 40mm fans and just point them toward the MOSFET area. That will take care of any possible temperature issues for sure.
 
You must log in or register to reply here.
Back
Top