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#1
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80 to 120mm fan adapter inside case port?
After a bit of Googling it looks like they are snake oil (or at least "suck
it and see") as far as CPU cooling goes. Would they improve airflow /reduce noise when used on 80mm case side vents? Or is pressure as important here too? -- Lordy |
#2
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Lordy wrote:
After a bit of Googling it looks like they are snake oil (or at least "suck it and see") as far as CPU cooling goes. Would they improve airflow /reduce noise when used on 80mm case side vents? Or is pressure as important here too? Might have some marginal value on an intake fan (acting as a plenum) but pretty much snake oil for an exhaust fan. Yes, pressure is a factor and the air is going 'the wrong way' for it. Axial fans sling the air radially, not 'forward', but a fan reducer is trying to force the air in the opposite direction as it narrows down. |
#3
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David Maynard wrote in
: Lordy wrote: After a bit of Googling it looks like they are snake oil (or at least "suck it and see") as far as CPU cooling goes. Would they improve airflow /reduce noise when used on 80mm case side vents? Or is pressure as important here too? Might have some marginal value on an intake fan (acting as a plenum) but pretty much snake oil for an exhaust fan. Sorry in should have said "intake" rather than "vent". I suspect a 80-120 adapter inside the case sidewall will mean the outside air comes in a bit close to the motherboard? And should be a bit quieter at the same throughput? I guess I will have to suck it and see Lordy |
#4
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Lordy wrote:
David Maynard wrote in : Lordy wrote: After a bit of Googling it looks like they are snake oil (or at least "suck it and see") as far as CPU cooling goes. Would they improve airflow /reduce noise when used on 80mm case side vents? Or is pressure as important here too? Might have some marginal value on an intake fan (acting as a plenum) but pretty much snake oil for an exhaust fan. Sorry in should have said "intake" rather than "vent". I suspect a 80-120 adapter inside the case sidewall will mean the outside air comes in a bit close to the motherboard? And should be a bit quieter at the same throughput? I guess I will have to suck it and see Lordy If it's a case side wall you should have plenty of room to simply cut it out to the 120mm fan mounting and use a wire grill. |
#5
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David Maynard wrote in
: I suspect a 80-120 adapter inside the case sidewall will mean the outside air comes in a bit close to the motherboard? And should be a bit quieter at the same throughput? I guess I will have to suck it and see Lordy If it's a case side wall you should have plenty of room to simply cut it out to the 120mm fan mounting and use a wire grill. Unfortunately its one of those clear plastic jobs with a circular ring for 80mm fan. But if it wasnt, wouldnt using an adapter put the fan and the outside air closer to the motherboard? Maybe the loss of volume inside the case would negate any benefits? I'll soon be finding out .... -- Lordy |
#6
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Lordy wrote in
: If it's a case side wall you should have plenty of room to simply cut it out to the 120mm fan mounting and use a wire grill. Unfortunately its one of those clear plastic jobs with a circular ring for 80mm fan. But if it wasnt, wouldnt using an adapter put the fan and the outside air closer to the motherboard? Maybe the loss of volume inside the case would negate any benefits? I'll soon be finding out .... I bought 2 adapters and two fans from Ebuyer (Total £6.21 inc shipping!) This Fans are a bit noisy at 12V but I've heard worse. They spin up at 5V though, quiet, and have a fair breeze too. A little bit of vibration though. Anyway, I fixed one adapter and fan inside the case (with some dampeners) and got a case temp drop of 4 degrees C. I'm tempted to pull out the 120 Panaflo I installed at the front of the case, an replace with the other fan at 5V. They push much more air and cost about 10 times less. -- Lordy |
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