Cooling advice URGENTLY sought!!

  • Thread starter Thread starter Miss Perspicacia Tick
  • Start date Start date
rstlne said:
So this is the version with 2 80mm fans in the front, one 80mm fan in
the back, and a top section for another 80mm fan?

Firstly, I wouldnt use the fan in the top, I would keep that block'd
off. Then make sure the other 80mm fans are working correctly..
Front 2 fans Suck air in, Rear fan blows air out.

If that's not helping then you have some other problem somewhere like
the heatsink not installed correctly or somethings damaged.

Just so we're clear - this http://tinyurl.com/2l4vq is the case in
question...There is only ONE case fan at the back - that's it, there isn't
room for any others.
 
Miss Perspicacia Tick's last words before the Sword of Azrial plunged
through his body were:
OK I will buy a 120 (not that I think there's room), but that means
losing it for a week, and I have work to do! GRR!!

Losing it for a week? Dont tell me you have someone else repair it?
I /CAN'T/ have any more fans - there's nowhere to put them! There's only
space for the one exhaust fan!

Mod the case.
 
Does the pope shit in the wood? Is the Bear Catholic?! or something...


I darest not do it, in case I invalidate the warranty. I'll have to ask Ben
if it's safe and if he'll replace anything that melts! There is a 15°C
difference between case and CPU now (28° vs 43°).

The last time I saw this the HS was orientated the wrong way on the
top of the CPU?
On AMD systems at least there is a lip under the HS that should fit
over the raised part of the CPU well so that the HS sits flush on the
core of the CPU.Also I remove the crappy thermal gum,polish/lap the HS
bottom and use thermal paste.
HTH :)



--
Free Windows/PC help,
http://www.geocities.com/sheppola/trouble.html
email shepATpartyheld.de
Free songs to download and,"BURN" :O)
http://www.soundclick.com/bands/8/nomessiahsmusic.htm
 
rstlne said:
There are 2 more in the front
I am guessing that you dont have them hooked up..

Yep, I see them and they are connected - all they're cooling though are the
HDs (of which there are three). Any other suggestions?
 
Shep© said:
The last time I saw this the HS was orientated the wrong way on the
top of the CPU?
On AMD systems at least there is a lip under the HS that should fit
over the raised part of the CPU well so that the HS sits flush on the
core of the CPU.Also I remove the crappy thermal gum,polish/lap the HS
bottom and use thermal paste.
HTH :)

I'll have to talk to Ben about it - I don't want to do anything myself in
case (ha ha!) it blows up or melts or something! He won't be too happy and I
really don't like complaining!
 
Miss Perspicacia Tick wrote:
| rstlne wrote:
|| So this is the version with 2 80mm fans in the front, one 80mm fan
|| in the back, and a top section for another 80mm fan?
....
| Just so we're clear - this http://tinyurl.com/2l4vq is the case in
| question...There is only ONE case fan at the back - that's it, there
| isn't room for any others.

From that page, "Specifications" column:

Ventilation Dual 80 x 80 x 25 mm fan attached front panel
One 80 x 80 x 25 mm fan attached back panel (Exhaust)


So that sounds like two fans in the front and one in the back, no?
 
Miss Perspicacia Tick said:
Yep, I see them and they are connected - all they're cooling though are the
HDs (of which there are three). Any other suggestions?
nope ..
heh
 
tomb said:
From that page, "Specifications" column:

Ventilation Dual 80 x 80 x 25 mm fan attached front panel
One 80 x 80 x 25 mm fan attached back panel
(Exhaust)


So that sounds like two fans in the front and one in the back, no?

See my reply to 'rstline'.
 
OK I will buy a 120 (not that I think there's room), but that means losing
it for a week, and I have work to do! GRR!!

No, you do not want an 120mm fan for the CPU. It won't even fit, there
are no heatsinks that I'm aware of that can use 120mm, at most it would be
92mm, but even then you would likely need an adapter. 80mm is correct
size for your heatsink, the most you should do is select a different 80mm
fan with higher flow rate, though of course it will be louder.
I /CAN'T/ have any more fans - there's nowhere to put them! There's only
space for the one exhaust fan!

Adding a fan to the side panel would require cutting out a new hole.
There it "might" be reasonable to use 120mm, though you shouldn't need
more than the lowest RPM model from any maker, to keep noise low as a
higher RPM 120mm fan can be quite noisey.
 
Yep, I see them and they are connected - all they're cooling though are the
HDs (of which there are three). Any other suggestions?

They're not "just" cooling the HDDs though, they are the intake flow for
the whole system, which is why I prevoiusly suggested looking at
increasing that flow rate by reduction of intake impedance. The
alternative is a different, 2nd intake point. Due to design of the case
that 2nd point would be a side panel, and it's the easiest way to go
without havin to disassemble entire system since side panel comes off and
metal shavings from cutting the hole won't be an issue.
 
I darest not do it, in case I invalidate the warranty. I'll have to ask Ben
if it's safe and if he'll replace anything that melts! There is a 15°C
difference between case and CPU now (28° vs 43°).

"case" or "system" temp usually isnt' the actual temp of the case air,
rather the temp of a 2nd chip in the system, that chip creating it's own
heat. It is a bit of a misnomer to call it such but the trend persists,
unfortunately, as propagated by the board manufacturers.

Since you don't want to alter anything this thread is only academic, you
need to have Ben take a look at it.
 
kony said:
"case" or "system" temp usually isnt' the actual temp of the case
air, rather the temp of a 2nd chip in the system, that chip creating
it's own heat. It is a bit of a misnomer to call it such but the
trend persists, unfortunately, as propagated by the board
manufacturers.

Since you don't want to alter anything this thread is only academic,
you need to have Ben take a look at it.

Dave,

You have to realise that there are two things we women know nothing about -
computers and cars! Yes, it is academic, but I really wanted to know what
the problem could be. All I know idling at 60 and topping at 80 ain't good!
 
Dave,

You have to realise that there are two things we women know nothing about -
computers and cars! Yes, it is academic, but I really wanted to know what
the problem could be. All I know idling at 60 and topping at 80 ain't good!

That is more than many men know.
 
I'll have to talk to Ben about it - I don't want to do anything myself in
case (ha ha!) it blows up or melts or something! He won't be too happy and I
really don't like complaining!

Assuming that the H/S is not on arse first, and that the sensors are
reading / interpreted correctly - you have may have a dead spot.

The CFM of the rear fan is not disclosed, and it's of the cheap shit
sleve variety. Pass through [ no stampings ] on that 80mm hole is
excellent but I question the ability of a poorly located exhaust fan
which is placed high for the GPU and placed low for the case ceiling
[creating a dead spot at the top of the case] to do it's job.

It's not the job of exhausting the x2 front intakes, which are behind
pillars which seems poor to me although I assume that WD's approved of
the Safari's means they are happy with the arrangement. rather that
the intakes may be so low as to create insufficient throughput of '
turbulence ' to carry the airflow to the exhaust fan [ singular ] .

It's a ' guesstimate ' but I'd put a temporary megga delta fan in the
rear to see if it can pick-up-the-flow before (a) it creates a dead
spot before, or after (b) [ back pressure ] the 80mm exhaust.

At £100+ plusUK, it's a poor performance / set up for an alloy case. I
don't have one and have never seen one but the case design apart from
the front air intake seems reasonable to good, so I'm left with fan
arrangement and their [ ability ] specification.

BoroLad

N.B. change the rear to a 5k *uck off delta, what do you get ?
 
On Sun, 20 Jun 2004 12:17:13 +0100, Miss Perspicacia Tick wrote:

[...]
I /CAN'T/ have any more fans - there's nowhere to put them! There's only
space for the one exhaust fan!
Are your temp readings in Celsius or Fahrenheit?
Just as thought...
 
kony's last words before the Sword of Azrial plunged through his body
were:
No, you do not want an 120mm fan for the CPU. It won't even fit, there
are no heatsinks that I'm aware of that can use 120mm, at most it would be
92mm, but even then you would likely need an adapter. 80mm is correct
size for your heatsink, the most you should do is select a different 80mm
fan with higher flow rate, though of course it will be louder.

I have seen some setups for doing it, and also as you said you can also
get an adapter.
Adding a fan to the side panel would require cutting out a new hole.
There it "might" be reasonable to use 120mm, though you shouldn't need
more than the lowest RPM model from any maker, to keep noise low as a
higher RPM 120mm fan can be quite noisey.

Still, should be a spot up front and in back for putting in fans.
 
GW De Lacey's last words before the Sword of Azrial plunged through his
body were:
Are your temp readings in Celsius or Fahrenheit?
Just as thought...

Either way, thats way too hot. 160 degrees is to hot for fahrenheit or
celsius
 
kony's last words before the Sword of Azrial plunged through his body
were:

I have seen some setups for doing it, and also as you said you can also
get an adapter.

But there is no gain to doing it.
Beyond a certain point the adapter is adding so much air volume between
the fan and 'sink that it's robbing the fan of CFM by maintaining this
pressurized region. The optimal fan size is that where the opening is
matched to the 'sink fins, while the fan sits as near the 'sink as
possible, not raised up off of it more than a few mm.

If greater flow rate through a sink is needed, beyond a 92mm fan it's
necessary to use a thicker fan, higher RPM, or adapt the 'sink to a
squirrel cage blower, which is extreme enough in itself that water cooling
may easily be a better alternative though more expensive.
Still, should be a spot up front and in back for putting in fans.

She linked pics of the case which show the two front bay fans, which draw
from behind a recessed area on the front bezel, but that's still a lot of
minor flow restrictions adding up to a significant enough flow reduction
to be an issue becaue of the higher heat parts inside. Two fans with
nothing on either side, impeding them, would suffice. That case just
isn't very well engineered considering that anyone with a budget to use
it, will likely put similar funds towards higher-performance gear inside.
 
kony's last words before the Sword of Azrial plunged through his body
were:
But there is no gain to doing it.
Beyond a certain point the adapter is adding so much air volume between
the fan and 'sink that it's robbing the fan of CFM by maintaining this
pressurized region. The optimal fan size is that where the opening is
matched to the 'sink fins, while the fan sits as near the 'sink as
possible, not raised up off of it more than a few mm.

Depends on the sink, there are a few setups meant for larger fans.
She linked pics of the case which show the two front bay fans, which draw
from behind a recessed area on the front bezel, but that's still a lot of
minor flow restrictions adding up to a significant enough flow reduction
to be an issue becaue of the higher heat parts inside. Two fans with
nothing on either side, impeding them, would suffice. That case just
isn't very well engineered considering that anyone with a budget to use
it, will likely put similar funds towards higher-performance gear inside.

I didnt get that post on my server.
 
Back
Top