First time build - Case Fans questions...

  • Thread starter Thread starter Moldy
  • Start date Start date
jeff findley said:
They've got filters and fan controllers. A good fan controller will
let you adjust fan speed and often monitor temperatures to balance
noise with airflow/cooling. These let you control noise, but would
also let you add more case fans and allow you to run them slower and
quieter.
Click to expand...

Definitely adds to the coolness factor of the computer.
 
Gandolf_One said:
lol:)
Click to expand...
Most of my machines run 24/7 and although my orifices do get a bit grubby
from time to time, I have found that a periodical application of compressed
air obviates the need for further cleaning.:-)
 
Moldy said:
2 in front as intake and 1 in back as exhaust (plus the already
functioning PSU fan)
Click to expand...

More factors to consider:

If you want to filter out as much dust as possible, you'll need to
ensure that you've got enough pressure in the case to actually push
some air out the front bezel cracks, etc., even with your in-blowing
fans restricted by their filters and with your PSU working to keep the
pressure low. You might need to omit the extra out-fan or use very
powerful (noisy) in-fans.

Likely, the in-fans will be considerably nearer your ears than the
out-fans would be and your in-fan noise will not be blocked by the
case as the out-fan noise would be. Noise blockage is a major effect,
which is a good reason for keeping it under your desk or somewhere
other than your desktop.

I'm not sure if filters block more noise than they cause or not; it
might depend on the filter and other variable factors. My very
non-restrictive filter doesn't seem to make much difference in noise,
but I haven't tested it well.
 
I have built (for the first time!) the following:

MSI K7N2 Delta-ILSR
XP2600+ Barton (with retail heatsink/fan)
2 x 512MB PC3200
JNC 4JA 8654VL Case
Click to expand...
<snip>

Just in case anyone is interested (plus a few more questions!)

Installed:
2 x YS-TECH FD8125 80mm 20dB 27CFM pulling air in the front bottom
1 x YS-TECH FD8125 80mm 20dB 27CFM pushing air out the rear top

I tested with Prime95 running for 15 mins, room temp 21-24C

Before Fans Installed: (Case/CPU)

MBM MSI
Idle 41/49 45/53
Load 46/61 50/65

After Fans Installed:

MBM MSI
Idle 36/43 40/47
Load 42/60 46/64

(Why does MBM adjust -4C on the MSI readings?)

So... my case is 4 to 5 C cooler all round and at idle my CPU is 6 C
cooler but only 1C cooler at load :-(

The metal frame of the case has a grille over both intake and exhaust
fans, is it worthwhile removing these:

The front fan holes are the usual circular grills (looks a bit like a
crop circle?!?)

The rear fan holes are a series of 8-10 horizontal fins which guide
the air down on it's way out.

Also, the plastic case front does not have any holes in it for the
fans so I am not entirely sure what effect that is having, I assume it
is pulling the air in through the gaps around drive bays / power
switches / front USB ports...?

Would it be worth my while dremmeling out the space in front of the
fans?

TIA


--


Moldy

The only difference between crap and art, is that art has brass name plates below it
 
<snip>

Just in case anyone is interested (plus a few more questions!)

Installed:
2 x YS-TECH FD8125 80mm 20dB 27CFM pulling air in the front bottom
1 x YS-TECH FD8125 80mm 20dB 27CFM pushing air out the rear top

I tested with Prime95 running for 15 mins, room temp 21-24C

Before Fans Installed: (Case/CPU)

MBM MSI
Idle 41/49 45/53
Load 46/61 50/65

After Fans Installed:

MBM MSI
Idle 36/43 40/47
Load 42/60 46/64

(Why does MBM adjust -4C on the MSI readings?)

So... my case is 4 to 5 C cooler all round and at idle my CPU is 6 C
cooler but only 1C cooler at load :-(

The metal frame of the case has a grille over both intake and exhaust
fans, is it worthwhile removing these:

The front fan holes are the usual circular grills (looks a bit like a
crop circle?!?)

The rear fan holes are a series of 8-10 horizontal fins which guide
the air down on it's way out.

Also, the plastic case front does not have any holes in it for the
fans so I am not entirely sure what effect that is having, I assume it
is pulling the air in through the gaps around drive bays / power
switches / front USB ports...?

Would it be worth my while dremmeling out the space in front of the
fans?

TIA
Click to expand...

Possible vortices created by too many fans/badly designed case/Untidy
cables/Badly designed HSF cooler combo/Crappy thermal gum instead of
thermal paste:/
I use one back 80mm 2,500 RPM case fan with my O/C XP1800.
Idle temps
Case temp 29 Deg C
Idle Temp 40 Deg C.
This HSF combo,
http://www.cclcomputers.biz/acatalog/coolersA370.htm
http://www.cclcomputers.biz/specs/cooler/microflow2/spec.htm

Max under load temps around 45 Deg C.
HTH :)



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