Originally Posted by Scorpion667
Grab one of these and run it passive:
Aquacomputer Gigant 3360
what i have in mind is similar, but involve 1080 external rad instead. with a phobya 1080 rad, he should be able to accomplish his goal w/o any fans. isolating and dampening the noise of a water pump is a matter of making an enclosed box with fiberglass insulation inside and put the pump inside the enclosed box. the pump noise will be minimal and the radiator will simply operate passively. with enough surface area, there is no need for fans if he's not looking for SLi level of performance. IF he's not satisfy with the temps, he can always add another 1080 rad to the loop and further expand the surface area.
unfortunately pure passive air cooling is not feasible with current market offerings. the absolute best air cooling case ever produced (zalman TNN500AF)
is no longer in production so the best you can do is get a used unit and mod it for current standards which may be too expensive. other air solutions simply does not offer sufficient heat capacity/dissipation for the job.
there are other passive offerings that are still being produced, but not sufficient for anything greater then a 100w TDP GPU which would be too anemic for his needs. even the TNN500AF would be hot for his purpose, but fortunately modern chips are designed to run on the warm side.
best "air cooling" case currently in production is the RV02/FT02 chassis. however it does not meet his acoustic requirements. it is definitely louder then a single 2.5" laptop HDD. personally I find that using a fan controller and dialing the fan speed down to 500RPM is an acceptable level of noise, but it's still slightly louder then a 2.5" drive
to come "close" to his requirement with out going with a custom liquid loop, I would use the following
mobo of choice, doesn't really matter since mobo aren't "loud"
most high end mobo does not require active cooing since they have MASSIVE heatsinks for the VRM/north/southbridge
Thermalright HR22 HSF (should be released soon if not already on the market) + SLOW spinning fan somewhere between 800RPM to 1000RPM max speed.
high performance TIM that would work with a delided chip. (none conductive / none abrasive)
FT02 with a high quality fan controller to bring the AP181's down to 500RPM. (i would not dip below 400RPM since it wouldn't generate enough static pressure to push any air pass the air filters)
powercolor passive 7850
samsung 8 gig sticks (since it uses the 30nm tech so it naturally use less power therefor less heat produced.
either the up coming rosewell 600w silentnight or the enermax 650w fanless PSU. (neither are actually on the market, but due to release this year)
a SSD or 2, and a single 2TB 2.5" laptop HDD.
with this configuration, the loudest part should be the AP181s operating at 500RPM which i find it to be an acceptable level of noise. (quieter then wind noise of central air conditioning unit which is easy to fall asleep to)
the only problem with this configuration is the 7850 may still be too anemic for his gaming needs. however there simply aren't ANY quiet air cooled GPU's on the market today. there are no passive triple wide GPU coolers on the market AT ALL
and of the high performance aftermarket coolers on the market, they still require a fairly massive amount of cooling and does not work well with the rotated mobo orientation of the FT02. it's unfortunate that there aren't ANY aftermarket GPU coolers that takes up 3 slots JUST for the heatsink. the ASUS GPU's are the only one's that use a triple slot cooler, but that's both heatsink AND fan... and either way the heatsink is not compatible with the vertical mounting system of the FT02.