OutlawXGP
Hi guys,
So I recently purchased Tomb Raider 2013 from steam summer sale for like £3.75 (bless gaben) and I decided to start playing it this week, beside the fact that it really is a great game and I can run it quite well on ultra however my GPUs are running kind of hot. Basically I have a custom fan curve and my first GPU is running around 65-73 degrees and GPU 2 is about 55-62 and the fan speed is about 75 to 80%.

Cards idle about 37-40

Now I know that the weather is quite hot these days but I mostly play at nights and I wanted ask if these temperatures are acceptable or are they too hot?

NordicJedi
The temperatures are perfectly fine under load.  I don't think most people here would consider those temperatures high for being under load.  It's not surprising that the top card is warmer, as it will be utilized more and generally has less available airflow compared to the bottom card.  In other words, the temps are perfectly fine.

OutlawXGP

HeavyHemi

OutlawXGP
Hi guys,
So I recently purchased Tomb Raider 2013 from steam summer sale for like £3.75 (bless gaben) and I decided to start playing it this week, beside the fact that it really is a great game and I can run it quite well on ultra however my GPUs are running kind of hot. Basically I have a custom fan curve and my first GPU is running around 65-73 degrees and GPU 2 is about 55-62 and the fan speed is about 75 to 80%.

Cards idle about 37-40

Now I know that the weather is quite hot these days but I mostly play at nights and I wanted ask if these temperatures are acceptable or are they too hot?

Those are completely normal temperatures. Under load, the default operation is to keep the GPU around 80C at which point the the GPU will throttle the clocks to maintain ~80C.  If you're running the GPU's in adjacent PCIe slots that is why your top GPU is hotter. The other GPU is blocking some of the airflow, and heat from the other GPU is being drawn into the intake of the TOP GPU. If you can run the GPU's with an empty PCIe slot in between, this will help lower your top GPU temps.  Even  running it at x8 won't make any significant difference in performance.

Well this is my current setup with the GPUs
 
http://i.imgur.com/M6fHhhg.jpg

OutlawXGP
Yes I have these 2 fans in front of the case.

http://i.imgur.com/EkMYmiF.jpg

HeavyHemi

OutlawXGP
Yes I have these 2 fans in front of the case.

http://i.imgur.com/EkMYmiF.jpg

Just for giggles, have you tried swapping the GPUs to see if the temp follows the GPU? While the top GPU will usually run a few degrees hotter, 10C is more like the difference when you have the GPU's in adjacent PCIe slots. My Titans run almost identical temps with a slot between and a GTX 650Ti in the middle for PhysX.