Radeon 7850 Temp Problem

[danbl]

I recently bought a Gigabyte Radeon 7850 and quite quickly I found that it was crashing when playing games, after anything between 10 minutes and an hour. I replaced my 600W generic brand PSU with a 750W Corsair but I'm still getting the same problem.

The card never seemed to go above 52C, so I ran memtest86 for hours with no problem to rule the memory out. CPU temp is also fine.

As a shot in the dark - despite thinking the card should be fine at 52c - I manually put the fan up to 100% and discovered I can play for hours on end (the card never gets above 45 or so). On auto fan, the driver doesn't really increase the speed at 52C, it goes from 40% to 42%

So... it appears the card is unstable at around 50c... is this normal? Should the drivers be automatically increasing the fan speed before then? Should I RMA the card?

Thanks in advance

 

[danbl]

Thanks both - will give tweaking the power a go.

 

[danbl]

Just had another crash with the power set to +20%

Setting the fan to 100% did seem to fix the issues so I'm not convinced it's not temperature related, however I have run FurMark benchmark on auto fan and it's fine - however this is only 15 minutes.

Can you suggest a stress test that runs for longer?

 

[danbl]

Davedree - yes, bought from OC, not labelled b grade - yes, black screen and looping sound is exactly it. Common problem?

 

[danbl]

Thanks Dave. I actually flashed to the latest BIOS from Gigabyte yesterday (F.31) and getting the same error, so sounds like it's an RMA! OC have raised the RMA already so will get it back to them this week.

Thaks for the help.