Increasing CPU Contact

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ShadeZeRO

Member
Oct 13, 2006
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Hey everyone.

Simply put, when I put my PC on it's side, the temps are 39*c Idle, and 49*c load.
If the Tower is upright, my temps are *45c Idle (actually they fluctuate a lot from 42*c)
And load is 60*c (I've seen it hit 65*c).

What would be the best way to increase contact to my CPU? I reseated the HSF with new AS5 today.
It's held by a metal mounting bracket in the back. I think it's as tight as it goes. And my CPU has no IHS.

This is a pic of the inside of my PC:





Any suggestions are welcome.
 
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Idontcare

Elite Member
Oct 10, 1999
21,110
59
91
Does the CPU fan "pull" air thru the heatsink or does it push air into the heatsink?

Also I could be totally wrong about this but it looks like your orange fan is setup to push air out of the case but the black exhaust fan below it appears to be setup to blow air into the case. Is this true?

Edit: And heat rises...if you have crappy air circulation then you would expect the temps to do better when the case is on its side as that silencer PSU does not have a fan above the CPU HSF to pull air out of the case right there. Bad config if you are wanting to reduce temps in a tower case.
 
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tofumonster

Member
May 25, 2007
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You also might want to look at some cable management. From the looks of it, it looks really cluttered. Zip ties and small stick-on wire routers are a good solution.

-one big step-

You could try lapping your heatsink since your CPU doesn't have an IHS
 
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tofumonster

Member
May 25, 2007
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You also might want to look at some cable management. From the looks of it, it looks really cluttered. Zip ties and small stick-on wire routers are a good solution.

-one big step-

You could try lapping your heatsink since your CPU doesn't have an IHS
 
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ShadeZeRO

Member
Oct 13, 2006
139
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86
Originally posted by: Idontcare
Does the CPU fan "pull" air thru the heatsink or does it push air into the heatsink?

Also I could be totally wrong about this but it looks like your orange fan is setup to push air out of the case but the black exhaust fan below it appears to be setup to blow air into the case. Is this true?

Edit: And heat rises...if you have crappy air circulation then you would expect the temps to do better when the case is on its side as that silencer PSU does not have a fan above the CPU HSF to pull air out of the case right there. Bad config if you are wanting to reduce temps in a tower case.
Click to expand...

Both the Black and orange fans blow air out.

Actually, all the fans blow air out, except for my 1 intake fan on the side of my hard drives.

As for cable management, it would be really hard to do in such a small case. I barely have enough room to run IDE cables -_-''

Plus, my PSU is HUGE. With a ton of cables. It should be pretty managed already lol , I have it clunked together in the only available space left =X
 
WoodButcher

WoodButcher

Platinum Member
Mar 10, 2001
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Originally posted by: tofumonster
You also might want to look at some cable management. From the looks of it, it looks really cluttered. Zip ties and small stick-on wire routers are a good solution.

-one big step-

You could try lapping your heatsink since your CPU doesn't have an IHS
Click to expand...

No IHS?

There must be something wrong with your mounting is that heatsink shifts. If it were a tower type I would suggest a wire or zip tie to help carry the load but I think you have a mounting prob.
Just curious, are the temps better pulling air from that sink? Have you tried it w/ the fan flipped?

Cable management is needed. Run those wires down along the side of tour drive bays or behind your mobo, stuff them into an unused bay but do something. that hurts.
 
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ShadeZeRO

Member
Oct 13, 2006
139
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That picture has an IHS, mine doesnt lol.

I did some cable management today... It helped alot with case temps in general.

My temps (upright) are 43*c idle, and 55*c Load, thats almost a 10*c drop from before.
My temps on the side are : 39*c idle, and 46*c Load

This is how it looks with the cables managed :
http://www.bhavikb.com/upload/...?id=114301DSC03969.JPG

I'm not sure on howto go about increasing the pressure between the CPU and HSF. I dont see how I could wire-tie it.
 
Assimilator1

Assimilator1

Elite Member
Nov 4, 1999
24,151
516
126
Wood butchers suggestion for a cable tie is meant for a tower cooler not a std one like yours.With a tower cooler in a vertical tower case gravity can make the HS 'droop' slightly resulting in poor conaact between the top of the CPU & HS ,hence a cable tie to pull it up slightly.
(Have I got ya right WB?;))

Much better cable management btw:thumbsup:

A problem I've had on same cases is having the exhaust fan too close to the HSF ,on my 2nd PC & my brothers I had the exhaust fan inline with the CPU thinking that it sucking the hot air out via the shortest route would be best.However temps were rather high so I moved the exh fan down 1 slot & it made a huge difference to CPU temps ,about a 7C drop IIRC!:Q (I'd have to dig out my notes if you want certain figures).
I'm assuming the big temp drops were because the exh fans were too close to the HSF (at the most 1cm) & were disturbing the air flow within the HS fins itself.
Try this ,disconnect your orange fan ,put the cover back on & restest temps ,& then do the same again this orange fan on & black fan off.
It may not do much as your fans are further from the HSF than mine were ,however its a quick, & easy thing to do & best of all it's free :D

Also I'm uneasy about the fact you have 4 fans exhausting (incl PSU) & 1 inlet fan ,maybe that inbalance is causing problems too?
What do other think about this?

Could you elaborate on your inlet fan? size ,speed & how open the inlet hole is?
 
WoodButcher

WoodButcher

Platinum Member
Mar 10, 2001
2,158
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Originally posted by: Assimilator1
Wood butchers suggestion for a cable tie is meant for a tower cooler not a std one like yours.With a tower cooler in a vertical tower case gravity can make the HS 'droop' slightly resulting in poor conaact between the top of the CPU & HS ,hence a cable tie to pull it up slightly.
(Have I got ya right WB?;))

Much better cable management btw:thumbsup:
Ditto
Click to expand...

Yes, you're right. When the HS is attatched there should be no movement. With the big tower type coolers the weight alone would try to separate the HS from the chip.
Have you flipped your cpu fan to blow down on the sink? If this gives any improvement in temps at all a good mod would be to lift the fan, stack 2 fans, the one closest to the sink having no fan. cut the motor supports from the housing. By lifting the fan like this you eliminate "dead spots" which in this case appears to be right over the cpu. By adding more weight and height, this brings us back to the original problem, the heatsink mounting. What I'm thinking is if it were possible to attatch a zip tie or two diagonally from the top of the fan back to the board it may help to keep contact between the cpu and HS.
 
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PolymerTim

Senior member
Apr 29, 2002
383
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0
I also wonder about the heat from that passively cooled X1950XT video card. I think in a case as cramped as this, you're bound to see a difference between vertical and horizontal just because, when upright, the heat from your video card is traveling up to the proc. I think in this case <G> the overall airflow through your case is the thing you should focus on most.

Does anyone know a good way to separate this from the possible poor seating? Maybe running open case with a desk fan aimed at the MB?

Just my two cents.
 
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Goldfish4209

Member
Nov 21, 2007
165
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As a side note, to help with graphics card temps, you could reverse that PCI slot fan and have it blow at the graphics card.
 
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ShadeZeRO

Member
Oct 13, 2006
139
0
86
All very good points. And I've done some of these testing already.

When I do change the side fan (by the VGA card) it increases temps overall in the case, and my CPU ends up shutting down. Even on it's side.
I think having a vacuum type effect is doing good for the case.

Also, the manufacturer of my heatsink says the fan should be pulling air from the heatsink, not blowing. I will try none the less. But I seem to recall a time when I accidently put it on backwards, and it increased my load temps, but lowered my idle...i'll have to look into it though.

the fans in my case goes as follows:
2x 80mm Exhausts (the black and orange one)
1x PCI Slot Blower (exhaust)
1x 80mm Exhaust (Orange, in front of the blower and VGA card)
1x 80mm Inlet, on the side of the hard drives (not visible in pics).

My X1950xt is not passively cooled. It has a zalman cooler on it (fan runs 2500rpm). And the Ram chips have heatsinks.
W


I'm going to try out the suggestion of turning 1 fan off. And seeing how that does.

And I'll try adding pressure to the CPU by Adding zip ties to the back diagonally....if I can find a good place to tie them.

Edit : I put the case up right to take pics...and my temps seems ...fine? maybe 1-2*c increase on both idle and load. But nothing too bad.
39*c idle 49*c Load. I'm sure I can do better, but I think this is a good sign.
My room is chilly though.

Pictures from the case:
Left Side
http://www.bhavikb.com/upload/images/640090Left.JPG

Right Side:
http://www.bhavikb.com/upload/images/698263Right.JPG
 
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ShadeZeRO

Member
Oct 13, 2006
139
0
86
I tried to make the left one an intake, but it caused the temps in the case to increase a lot. Because the heat from the VGA card was going on to the board, and my PC would shut off. Even my PWM-IC went up by almost 7*c.
 
WoodButcher

WoodButcher

Platinum Member
Mar 10, 2001
2,158
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76
Originally posted by: ShadeZeRO
I tried to make the left one an intake, but it caused the temps in the case to increase a lot. Because the heat from the VGA card was going on to the board, and my PC would shut off. Even my PWM-IC went up by almost 7*c.
Click to expand...

Interesting setup,,, Aa heatsink that sucks, :confused: side fans out,, :roll: what case do tou use? I'd be interested to see detailed pics and description like the egg puts up.
 
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ShadeZeRO

Member
Oct 13, 2006
139
0
86
WoodButcher

WoodButcher

Platinum Member
Mar 10, 2001
2,158
0
76
Yes, the stamped steel screens in all cases should be cut out, if you must have a grill the plain wire grills are best. The punched holes block ait and create noise. Search here, you'll find threads on the mod.
 
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