Overheating VRMs

[guyf2010]

Hello,

I've been running Crossfire 280Xs for a fair while. The temps on the core have never been great. The back card reaches 90C even at 100% fan during benchmarks. The front card reaches a toasty 80C as well. There's a 200mm fan at thr front blowing some air over the cards and two 120mm exhaust fans right above the cards blowing out hot air.

 

However, the biggest problem is the VRM temps. Benchmarks at STOCK speeds can make the VRM reach just short of 100C on the back card and above 80 on the front card. Overclocked to 1100MHz at stock voltage, the back card can reach about 108C. This seems pretty ridiculous to me, these aren't reference coolers, both cards use TwinFrozr coolers and there is an empty PCIE slot between them.

 

I presume the VRM's temperature limits are roughly the same as the core's. Apart from buying new GPU coolers (Not that cheap in Australia to my knowledge), are there any solutions?

The benchmark I used was Kombustor.

Thanks

[Faceman]

Never ever use Kombustor or Furmark.  It is entirely unrealistic, and it has been known to brick cards in rare circumstances.

 

What are VRM temps while gaming or running Unigine Heaven?

 

Your GPU Core temps are on the higher side, but as long as everything is stable, you should be ok.  Are you having instability issues?

[Sorfex0]

Thats what you get for choosing "RED" side! You get it? Cuz it gets hot! Now burn haha...
Okey srsly what case do you use? Mb it has bad airflow? How hot does your cpu get? Mb your dust filters are full? Have you tested other benchmarks?

[Kinda Bottlenecked]

Kombuster is not a good bechmark... Try using unigine valley and see the VRM temps.

[guyf2010]

Thats what you get for choosing "RED" side! You get it? Cuz it gets hot! Now burn haha...

Okey srsly what case do you use? Mb it has bad airflow? How hot does your cpu get? Mb your dust filters are full? Have you tested other benchmarks?

I use a ThermalTake Core V21, The airflow seems fine. CPU temps are fine, a Hyper 212 on a stock clocked 4460 is overkill.

 

 

Never ever use Kombustor or Furmark.  It is entirely unrealistic, and it has been known to brick cards in rare circumstances.

 

What are VRM temps while gaming or running Unigine Heaven?

 

Your GPU Core temps are on the higher side, but as long as everything is stable, you should be ok.  Are you having instability issues?

I know Tomb Raider brings core temps up into the 8X degree zone, I'll have to check VRM temps in a second.

 

Only stability issue is Kombuster when overclocked. The machine seems to crash when VRMs get close to 110C

[SkilledRebuilds]

Never ever use Kombustor or Furmark.  It is entirely unrealistic, and it has been known to brick cards in rare circumstances.

 

What are VRM temps while gaming or running Unigine Heaven?

 

Your GPU Core temps are on the higher side, but as long as everything is stable, you should be ok.  Are you having instability issues?

If his VRM1's are naked under his TwinFrozR cooling,..then would the GELID VRM solution work for this fella?

[guyf2010]

Tomb Raider gave VRM temps of 85C on the back card and 70 on the front card. No where near as bad as it was in Kombustor, but the 85C is still fairly toasty. Interesting MSI advertises a program on the box that runs like crap on the card.

Both cards were running @ 1110/1500, stock voltage

[SkilledRebuilds]

Tomb Raider gave VRM temps of 85C on the back card and 70 on the front card. No where near as bad as it was in Kombustor, but the 85C is still fairly toasty. Interesting MSI advertises a program on the box that runs like crap on the card.

That actually seems about normal now...srsly.

It's only 85*c on top because of the lower card under it feeding it hotter air...

The 75*c vrm temp on the bottom card is normal.

 

All seems normal.

/Using Furmark/Kombuster products will only make your heart drop,.. use programs YOU would use in an everyday sense of testing...

Games/Encoding/Whatevers....

[Ziggamasta]

All I could suggest is making sure the VRM have thermal pads on them or just go liquid baby