CM_USA :
If the power supply is exhausting air into the system, then the power supply is faulty. By design all ATX power supplies pull air from the inside of the case and exhaust it to the back towards the power cord. If there is any kind of whining, the power supply is faulty.
You can RMA that power supply under warranty coverage here:
http://www.coolermaster-usa.com/rma
The unit has a 5 year warranty.
Really do appreciate this reply, was starting to wonder if the GX was designed to blow the air out or indeed it is a faulty one. Was going to make a new thread about that to be sure.
I read in a review that the GX specially under load tends to shut down because of heat issues so i could imagine they didn't follow the normal path, but decided it needs all the cold air it can get, so from the outside.
And although i do appreciate your reply i still think the GX750 ain't a good product, quote ;
"
The problem with Cooler Master GX 750 W was noise and ripple. During tests four and five noise level on +3.3 V and +5VSB outputs was higher than the maximum allowed (50 mV): 57.4 mV and 70 mV for +3.3 V during tests four and five, respectively, and 51.6 mV and 58.4 mV for +5VSB during tests four and five, respectively. Below you can see the screenshots from our oscilloscope during test five. The maximum allowed for +12 V is 120 mV. All these numbers are peak-to-peak figures.
Of course GX 750 W offers as advantages having four power cables for video cards and more SATA power connectors, but it is only safe to run this new Cooler Master unit up to 450 W.
And now, the fun part. I will lock this here Coolermaster in that there modified ATX case and pump all the heat output from the SunMoon in there to get the ambient temperature nice and hot. I expect that the intelligent fan controller will have its work cut out for it. Hey, fan controller, name the English king who died during the battle of Hastings. * EDIT ; this does suggest it should dispense the air out indeed, i'll give you that.*
"What's a battle?"
Folks, the fan controller has officially turned into Ralph Wiggum. I'm scared for this power supply.
The unit lasted until test five, and then two minutes and twenty five seconds later shut itself down. I was able to get it restarted once it cooled off, indicating that the overtemp protection was in play, but then it shut down again when I tried for test five again, thereby failing the hot tests due to the inability to make it all the way to the end. The highest ambient temperature seen was forty two degrees before shutdown with exhaust temps reaching the low sixties. It is abundantly clear to me that this unit's 750 watt rating is not intended to be reached anywhere near the forty degree mark, and to be honest I'm not sure I'd care to run it to 750 watts very often at room temperature either, if I'm going by the numbers from the cold tests.
In terms of the efficiency and voltage readings, there are no surprises here. Regulation is less stable and efficiency is down. Before the overtemp protection stepped in, efficiency in test five was down to 76.6% and falling.
"
From ;
http://www.hardwaresecrets.com/article/Cooler-Master-GX-750-W-Power-Supply-Review/917/10 /
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story3&reid=188
I do agree though that i had to be more specific with the title and should have stated to stay away from the GX series, would have been more fair maybe. Already thought that after a couple of minutes but i can't edit my text unfortunately. Was so happy with the new one and so pissed off with the old one i just wanted to express that and maybe was to fast with condemning all of the Cooler Master psu's. Still, i think, and according to some other replies more people do, a company which makes stuff like that shouldn't be praised for making one or two good ones.
Not a bad word about other Cooler Master stuff, i've got the sickelflow 120 case fan in the back and it's beautiful and very quit.
@Mack ; you really think a oc'd 560ti, a non oc'd i7 870 2.9 ghz ( can't oc it, meh ), 8G ram, 1HD, 1DVD, 3 casefans, some leds and 4 ccfl's are too much for a 750W unit promising 60A on the 12V, to hold up ? Tell that to MM, he runs sli 560Ti with a 620W ( or 650 can't recall that so fast ) Sorry, but i really can't understand that. A good 500 should do that with ease.
Anyway, long story short ; i could try to rma the psu and then sell it second hand but i wouldn't want to sell this bad product to someone else actually.
Thanks for the link anyway.
It was 47 or something. Happiest guy in the world.
Nah.
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