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need airflow/temp help

post #1 of 7
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my comp has been running well since i built it, but when i open the nvidia monitor, it seems to me that the temps are a little high considering i have 5 fans not counting the 120 mm PSU exhaust. i also know that the 8800gtx is hot enough to be used as a skillet and raises temps considerably. the air temp in the room the computer sits in is near constant 75F, and if it does get hotter, i have 4 window fans to get rid of the hot air.

as of this moment, this computer has been running today for about an hour, no stress, just idle. The temps are: CPU 95F; SYSTEM 100F; CHIPSET 117F; GPU 136F. Under load: CPU 102F; SYSTEM 110F; CHIPSET 124F; GPU 168F.

The CPU and SYSTEM temps are what i'm concerned about; the chipset could be lower, and i expect the gtx to be hot. Does anyone have any advice to give to help me get these temps down? or do they even need to be reduced? nothing i do seems to have much effect, like reversing fan direction, etc. I was also thinking about lapping at least my cpu heatsink, just for the heck of it. i think i'll wait a little while to lap the ihs on the cpu... but would lapping just the heatsink give any cooling advantage to the cpu? Are there any cheap/free ways to lower any of the temps I listed?

I have attached a side view of my comp highlighting the placement of the fans and their direction. Thanks for any help.
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Beast
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X2 5200+ stock XFX nForce 590 eVGA 8800GTX 2 x 1gb Mushkin DDR2-800 
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1x 320G Seagate 7200.10, 1x 80GB WD IDE Lite-On Super All-Write XP Pro Gateway FPD1975W 19" 
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post #2 of 7
Quote:
Originally Posted by tlassiter View Post
my comp has been running well since i built it, but when i open the nvidia monitor, it seems to me that the temps are a little high considering i have 5 fans not counting the 120 mm PSU exhaust. i also know that the 8800gtx is hot enough to be used as a skillet and raises temps considerably. the air temp in the room the computer sits in is near constant 75F, and if it does get hotter, i have 4 window fans to get rid of the hot air.

as of this moment, this computer has been running today for about an hour, no stress, just idle. The temps are: CPU 95F; SYSTEM 100F; CHIPSET 117F; GPU 136F. Under load: CPU 102F; SYSTEM 110F; CHIPSET 124F; GPU 168F.

The CPU and SYSTEM temps are what i'm concerned about; the chipset could be lower, and i expect the gtx to be hot. Does anyone have any advice to give to help me get these temps down? or do they even need to be reduced? nothing i do seems to have much effect, like reversing fan direction, etc. I was also thinking about lapping at least my cpu heatsink, just for the heck of it. i think i'll wait a little while to lap the ihs on the cpu... but would lapping just the heatsink give any cooling advantage to the cpu? Are there any cheap/free ways to lower any of the temps I listed?

I have attached a side view of my comp highlighting the placement of the fans and their direction. Thanks for any help.
Idle temperatures aren't really useful as far as indicating your cooling system's performance. Far more important are temperatures at maximum sustained load conditions.

On the other hand, I wouldn't worry at all about those readings.
    
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Phenom II X3 720 BE Gigabyte GA-MA790FXT-UD5P Sapphire Radeon HD 3870 2 x 2GB Crucial Ballistix Tracers PC3 10600 
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Almost 8TB of storage AMD Stock Cooler Windows Home Server CoolerMaster SilentPro M 700W 
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CPUMotherboardGraphicsRAM
Phenom II X3 720 BE Gigabyte GA-MA790FXT-UD5P Sapphire Radeon HD 3870 2 x 2GB Crucial Ballistix Tracers PC3 10600 
Hard DriveCoolingOSPower
Almost 8TB of storage AMD Stock Cooler Windows Home Server CoolerMaster SilentPro M 700W 
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Lian Li PC-V2000B (with thlnk3r mods) 
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post #3 of 7
Those are decent temps. Everything is right where it should be.
post #4 of 7
Quote:
Originally Posted by tlassiter View Post
... have 5 fans not counting the 120 mm PSU exhaust.

... but would lapping just the heatsink give any cooling advantage to the cpu?
Like so many people, you are equating the size of a fan with how much air it moves. It's not size, it's CFMs that count. The CFMs of the intake fans should about equal the CFMs of the exhaust fans. You are right to include the PSU fan, but how about the fan on the GPU?
Just a guess, but it looks to me like you have way to many exhaust fans.

To check if air flow is your problem, remove the side of the case and set up a large house fan blowing into the case. If the temps drop significantly, then you have an airflow problem.

Lapping will help, 2-8*c, but there is no way to tell how much since I have no idea of how good your present thermal bond is between your CPU and heatsink.
http://www.xtremesystems.org/forums/...d.php?t=135359
http://www.google.com/search?hl=en&q...=Google+Search
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Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
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2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
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Logiteck G400s none 
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post #5 of 7
those are decent temps..they are almost like mine
My System
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FX-62 @ 3.2 =']] M2N32-SLI DELUXE 8800 GTS 640mb (sli soon enuff) Corsair Dominator ddr2 800 (4x1gb) 
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2 x 500gb 1 x 150gb raptor (OS) 2 x 18xDL Sony DVD Burners XP Pro 50" HP PLASMA 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
FX-62 @ 3.2 =']] M2N32-SLI DELUXE 8800 GTS 640mb (sli soon enuff) Corsair Dominator ddr2 800 (4x1gb) 
Hard DriveOptical DriveOSMonitor
2 x 500gb 1 x 150gb raptor (OS) 2 x 18xDL Sony DVD Burners XP Pro 50" HP PLASMA 
PowerCase
Ultra 700w Antec P180B 
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post #6 of 7
I read somewhere that a negative pressure is always betetr than a positive pressure. That is, more exhaust is better than more intake. Is this true?

Because I have more exhaust tha nintake and my exhaust fans are actually drawing air in through the front of my case from the back
post #7 of 7
Quote:
Originally Posted by Betrivent View Post
Because I have more exhaust tha nintake and my exhaust fans are actually drawing air in through the front of my case from the back
Huh?
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
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