Re: Passive Coolers!
A passive cooler is a heatsink that has no direct cooling fans or fluid going to it. Active has a source that moves a fluid over the heated area, cooling better.
A passive coolers uses the surrounding cool air and case airflow to cool the cpu... or any chip on the mobo. I have an Asus mobo with passive chipset cooling, while my xfx 680i has active North bridge cooling.
Now youj mentioned the case as only 2 fans... My last few cases have had 3 or more. Most good air cases suck air into the front, and exhaust out the back and top. This moves air over majolr parts and chips and onto the cpu heat sink then out of the case.
Now different fluids, Air, water, Dry Ice and Liq Nitrogen all cool different amounts. Its basically how cold and how much heat the fluid can absorb.
Air coolers require cool air to get to the heatsink, so as the air moves over the hot mobo stuff, it has less ability to suck up more heat, thusit won't cool as well.
Water only cools parts itr touches, and works just like your cars radiator. As the water can absorb more heat, the warm air from the case doesn't change the waters cooling ability much. Plus the heat is usually expelled right out of the case.
If you run a computer out of a case, it will run real cool, but sticking it in a box, really changes things. Its the case makers who need to get better, as intel has drastically cooled off their chips, and cooling companies have really steped up their products too.
Foldie = i7 950@ 4.0Ghz Gigabyte x58a-ud3r EVGA 970 SC Corsair H100 Corsair hx520 3x2gb OCZ Gold Corsair 650D
Woohoo = L5639 @3.1Ghz EVGA SR-2 gtx 260-216 Hyper 212+ Corsair 1050hx 6x2gb Corsair XMS3 Blackhawk Ulra
Alienware 18 - SLI 770M 4700mq 16Gig