mattyc Posted October 30, 2010 Share Posted October 30, 2010 Sounds a strange question but bear with me! Here is a photo of my PC. I have just ordered a ax850PSU. I have a lian li x500 case. I presently have a ******** neo PSU which only has a fan on the back of the psu. The new psu has an intake fan and i am unsure whether to have the fan facing down sucking air away from the cpu etc or have the fan facing up as there is room to do both. What would give the best results or will it not matter? I am thinking will it be cooler with the fan facing up instead of drawing warm air from the CPU? http://i163.photobucket.com/albums/t309/mathewcarroll/lianli%20pcx500/SDC10013.jpg http://i163.photobucket.com/albums/t309/mathewcarroll/lianli%20pcx500/IMGP0699.jpg Link to comment Share on other sites More sharing options...
va1erian Posted October 31, 2010 Share Posted October 31, 2010 So, which one of the two is your PC ? As far as I know Corsair allows the PSUs to be mounted either way, i.e. with the fan up or down. Usually, due to assymetry of the mounting pattern of the screw holes, PSUs can be mounted only one way (fan down, I presume). I am not sure if this is the case for your Lian Li case, though. Personally, if I had the CPU cooled down enough, I would mount the PSU the fan up. Link to comment Share on other sites More sharing options...
trackrat Posted October 31, 2010 Share Posted October 31, 2010 These types of PSUs normally mount with the fan up. Hot air rises so it's a toss up if the fan draws warm air off the CPU heatsink or draws in warmer air at the top of the case. I have seen rear case exhaust fans starve the heatsink fan or cause turbulence and a hotter CPU so if it were me I'd just install the PSU normal with the fan up and eliminate any chance of problems. Link to comment Share on other sites More sharing options...
mattyc Posted October 31, 2010 Author Share Posted October 31, 2010 It is the top picture at the moment. I didnt think about which way my case will let me install it so i will just wait until it arrives and play around. I actually thought the correct way to install these PSU was with the fan facing down sucking air out of the case and through the psu out the back Not with the fan facing up. Link to comment Share on other sites More sharing options...
trackrat Posted October 31, 2010 Share Posted October 31, 2010 The fan typically faces up. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 3, 2010 Corsair Employees Share Posted November 3, 2010 Our PSU's can be mounted in any orientation. Link to comment Share on other sites More sharing options...
mattyc Posted November 3, 2010 Author Share Posted November 3, 2010 Our PSU's can be mounted in any orientation. Thanks. I realise that, however my case can mount the psu both ways at the top of the case also. If i face fan down into the cpu area which seems to be standard practise, will it not draw warmer air from the cpu area and also interfere with the exhaust fan which is directly below it? I think i am going to mount at the top of the case with the fan facing up as my lian li pc-x500 has 2 thermal zones and i think this would keep the psu the coolest. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 4, 2010 Corsair Employees Share Posted November 4, 2010 As long as the fan side of the PSU is not mounted flush with the case and has some room for air to get pulled through the PSU then that should be fine. With the fan facing down above the CPU, it may run slightly warmer, but it would be unlikely that it would have any negative effect on the PSU. Link to comment Share on other sites More sharing options...
va1erian Posted November 5, 2010 Share Posted November 5, 2010 As long as the fan side of the PSU is not mounted flush with the case and has some room for air to get pulled through the PSU then that should be fine. How much ? Is a 2-cm gap between the fan and the case wall enough ? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 5, 2010 Corsair Employees Share Posted November 5, 2010 How much ? Is a 2-cm gap between the fan and the case wall enough ? That should be plenty of space. Basically you just need a few mm, so that air can be pulled up through the PSU. Link to comment Share on other sites More sharing options...
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