I use a 300W Skyhawk PSU and really like it,there is temp. sensor which determines fan speed but i don't like the noise even at the coolest times. I've got an idea and want to ask those of you who probably more experienced than me... I use PSU upside down(i mean the electronic card in PSU is up sided). The case mount hole wont allow. I think drilling new holes and mounting PSU normal(electronic card is down) And than cutting top of the PSU and the case. I can mount or weld a fence on it to prevent touching. I want to use the phsiycal rule of warm air going up. After this moddning psu wont try to push the air back,the air can naturelly released,perhaps a zalman case fan at silent mode can help a bit. I wish I could explain this project better,looking forward to your comments.
Standard mounting for power supplies IS Upside-Down. The reason for this is so that power supplies that use lid-mounted exhaust fans can pull heat directly from the CPU.
If you really want to be tricky leave it upside down and mount a 120mm slow speed fan to the lid.
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i'm planning to cut the upper part of the case which is in the line of PSU,so i think when i turned the lid of PSU and also cut it then inside of PSU will be revealed. Of course i will put a fence like smth,anyway this can work with 2 silent mode Zalman fans but i'm wondering how can i understand when the cooling of PSU fails? How can i understan that?