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Re-installing IHS on GTX480, High temps under water??

post #1 of 3
Thread Starter 
I recently bought a 480 from another member here, that had the Antec kuhler mod done to it. This requires the IHS to be removed. I took a razor blade3 and removed the excess adhesive from the IHS, and the side of the GPU die. After putting a little larger than BB sized dot of thermal paste on the die, i placed the IHS back on the die with a little pressure, to flatten the paste out.

I have 2 480's in SLI, and the blocks are identical. My first 480 gets 35 ish at idle and 55 ish under load. My 2nd
(W\ IHS install) sit at 37 idle 70+ loaded. The loop is running in a paralleled set up, so i would have expected a much closer temp reading from them.

What can i do to install the IHS on to this card correctly??
Wet Willy
(17 items)
 
Oold man 555
(11 items)
 
 
CPUMotherboardGraphicsRAM
i7 920 @4.217 1.24 v's 24/7 Asus p6t6 ws Revolution (full water blocks) GTX 480 SLI @867-1734 samsung 30nm at 2040mhz. 8-9-9-26 1.54v's 
Hard DriveOptical DriveCoolingCooling
OCZ Agility 3 RAID0 lite on dvd burner Raystorm Danger Den 480 Full copper (paralleled)  
OSMonitorMonitorKeyboard
Dual boot, Windows7 64bit/Linux ubuntu64bit 1hpw2207h1680/1050  Sharp 60" LED 120hz s510 
PowerCaseMouseAudio
Ultra 1600w X4 NZXT, Tempest EVO logitech s510 combo Harmon Kardon AVR245 
CPUMotherboardGraphicsRAM
Phenom II X4 B55 m4n82 deluxe ghetto gtx 460 patriot viper 1066 
Hard DriveOptical DriveCoolingOS
some crap sata dvd thermal take big typhoon windows 7 ultimate  
MonitorPowerCase
hp 2207h ultra lsp 750watt cooler master elite 
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Wet Willy
(17 items)
 
Oold man 555
(11 items)
 
 
CPUMotherboardGraphicsRAM
i7 920 @4.217 1.24 v's 24/7 Asus p6t6 ws Revolution (full water blocks) GTX 480 SLI @867-1734 samsung 30nm at 2040mhz. 8-9-9-26 1.54v's 
Hard DriveOptical DriveCoolingCooling
OCZ Agility 3 RAID0 lite on dvd burner Raystorm Danger Den 480 Full copper (paralleled)  
OSMonitorMonitorKeyboard
Dual boot, Windows7 64bit/Linux ubuntu64bit 1hpw2207h1680/1050  Sharp 60" LED 120hz s510 
PowerCaseMouseAudio
Ultra 1600w X4 NZXT, Tempest EVO logitech s510 combo Harmon Kardon AVR245 
CPUMotherboardGraphicsRAM
Phenom II X4 B55 m4n82 deluxe ghetto gtx 460 patriot viper 1066 
Hard DriveOptical DriveCoolingOS
some crap sata dvd thermal take big typhoon windows 7 ultimate  
MonitorPowerCase
hp 2207h ultra lsp 750watt cooler master elite 
  hide details  
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post #2 of 3
Are the edges of the IHS sanded down? That's probably your culprit.

it Should NOT look like this:
450
but instead Should look like this:
450

If the glue and the IHS edges aren't sanded, you need to get some 600grit sand paper and a glass surface and just put the IHS flat on the sandpaper so that you sand just the edges of the IHS. How much paste is between the IHS and die? Does it spread out all the way over the die or does it stay real thick?

It Should NOT look like this:
450
and it Should look like this:
450
Notice the difference between how much and how little paste is between the two surfaces...

Basically you actually don't want the edges of the IHS to touch the green part, you want all the pressure and force to be on the die. So basically you should visibly see a gap on the edges of the IHS. Let me know if that helps.
post #3 of 3
Thread Starter 
thanks cake. I'll give tthis a shot. I took a razor to the glue on the side of the IHS. Obviously that was not enough
Wet Willy
(17 items)
 
Oold man 555
(11 items)
 
 
CPUMotherboardGraphicsRAM
i7 920 @4.217 1.24 v's 24/7 Asus p6t6 ws Revolution (full water blocks) GTX 480 SLI @867-1734 samsung 30nm at 2040mhz. 8-9-9-26 1.54v's 
Hard DriveOptical DriveCoolingCooling
OCZ Agility 3 RAID0 lite on dvd burner Raystorm Danger Den 480 Full copper (paralleled)  
OSMonitorMonitorKeyboard
Dual boot, Windows7 64bit/Linux ubuntu64bit 1hpw2207h1680/1050  Sharp 60" LED 120hz s510 
PowerCaseMouseAudio
Ultra 1600w X4 NZXT, Tempest EVO logitech s510 combo Harmon Kardon AVR245 
CPUMotherboardGraphicsRAM
Phenom II X4 B55 m4n82 deluxe ghetto gtx 460 patriot viper 1066 
Hard DriveOptical DriveCoolingOS
some crap sata dvd thermal take big typhoon windows 7 ultimate  
MonitorPowerCase
hp 2207h ultra lsp 750watt cooler master elite 
  hide details  
Reply
Wet Willy
(17 items)
 
Oold man 555
(11 items)
 
 
CPUMotherboardGraphicsRAM
i7 920 @4.217 1.24 v's 24/7 Asus p6t6 ws Revolution (full water blocks) GTX 480 SLI @867-1734 samsung 30nm at 2040mhz. 8-9-9-26 1.54v's 
Hard DriveOptical DriveCoolingCooling
OCZ Agility 3 RAID0 lite on dvd burner Raystorm Danger Den 480 Full copper (paralleled)  
OSMonitorMonitorKeyboard
Dual boot, Windows7 64bit/Linux ubuntu64bit 1hpw2207h1680/1050  Sharp 60" LED 120hz s510 
PowerCaseMouseAudio
Ultra 1600w X4 NZXT, Tempest EVO logitech s510 combo Harmon Kardon AVR245 
CPUMotherboardGraphicsRAM
Phenom II X4 B55 m4n82 deluxe ghetto gtx 460 patriot viper 1066 
Hard DriveOptical DriveCoolingOS
some crap sata dvd thermal take big typhoon windows 7 ultimate  
MonitorPowerCase
hp 2207h ultra lsp 750watt cooler master elite 
  hide details  
Reply
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