stanggt00 Posted January 6, 2006 Posted January 6, 2006 I have never really seen anything definitive showing which way a fan should be placed onto a heatsink until I was O/Cing my uncles computer. The H/S and fan were a set where the fan was blowing cool air onto the H/S. I swapped it and noticed the temps increase during stress testing. I havent tested it on my own rig just yet, but I currently have mine sucking the heat away from the heat sink. I am wondering, which way the rest of you have yours mounted? Have you ever seen a temperature drop? __________________ Share this post Link to post Share on other sites More sharing options...
lowboy Posted January 6, 2006 Posted January 6, 2006 Blowing into the HS works best for most HS Share this post Link to post Share on other sites More sharing options...
Guest scott Posted January 6, 2006 Posted January 6, 2006 stanggt00, Mine's blowing down into the heatsink. Share this post Link to post Share on other sites More sharing options...
ssR Posted January 6, 2006 Posted January 6, 2006 blowing in. i think i might be able to explain it, u see in a conventional HS the fan blows directly on the HS base, applying more air pressure on the heat source and thus spreading the heat. if u will reverse the fan it will suck the air from the surrounding including sides and the amount of the heat it will suck off the base will be nothing compared to when the fan is actually blowing on the HS base. there are heatsinks which allow 2 fans setup 1 blowing and 1 sucking, usually they also involve heatpipes. in this case a single sucking fan can work almost as well as a blowing one but i still dont think it would be as good as the "traditional" setup Share this post Link to post Share on other sites More sharing options...
greatscott68 Posted January 6, 2006 Posted January 6, 2006 I have mine blowing in - but for grins, run some temps doing it both ways. It would be an easy test. Share this post Link to post Share on other sites More sharing options...
cdidhe Posted January 6, 2006 Posted January 6, 2006 Answer : The fan used should always be blowing down for all Thermalright heat sinks. http://www.thermalright.com/support_default.htm under faq general #2 also it will decrease pwm temps Share this post Link to post Share on other sites More sharing options...
boatasiaus Posted January 6, 2006 Posted January 6, 2006 Tried it both ways on my XP-90. Blowing down decreased temps by 3C or so. Share this post Link to post Share on other sites More sharing options...
treebeard68 Posted January 6, 2006 Posted January 6, 2006 I have a 92mm panaflo blowing out on my xp-90 and my temps after playing Quake4 never go beyond 36C. My idle temp are usually between 27-29. When I run Prime95 the highest temp I have ever seen is 40C, which is way cooler than my old Barton. Share this post Link to post Share on other sites More sharing options...
stanggt00 Posted January 6, 2006 Posted January 6, 2006 I have a 92mm panaflo blowing out on my xp-90 and my temps after playing Quake4 never go beyond 36C. My idle temp are usually between 27-29. When I run Prime95 the highest temp I have ever seen is 40C, which is way cooler than my old Barton. My embarrasment. It felt like it was blowing away when in fact it was blowing onto the HS. My temps are close to yours with 41C under load in OCCT and 30C idle. I am putting 1.6V to the CPU right now with 250x10. Thanks again for the replies. Share this post Link to post Share on other sites More sharing options...
Cobia69 Posted January 7, 2006 Posted January 7, 2006 It's Megamaid! She's gone from suck to blow! :shake: Share this post Link to post Share on other sites More sharing options...
finagle69 Posted January 7, 2006 Posted January 7, 2006 It's Megamaid! She's gone from suck to blow! :shake: LMFAO!!! i was thinking the exact same thing!!!!!! the best movie in the world i tell ya. Share this post Link to post Share on other sites More sharing options...
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