Question about the backplate on a TRUE

xj0hnx

Diamond Member
Dec 18, 2007
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I just got a TRUE for my Q6600 (2.9Ghz 322x9 1.325 vcore), been running Prime95 for about 20 minutes, or so and my temps are 67/67/55/51. I know there's some difference in per core temp, but this seems extreme. I am guessing I have to reseat it.

My question is, once you have the back plate in, does it hold enough so that you don't have to take out the mobo to pull the HSF off, and reapply grease, and reseat? Or am I going to have to tear this thing down again?

Or, am I worrying for nothing, and after a few days the temps should normalize?
 

tranceport

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Aug 8, 2000
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I'm in a similar boat.. I have reseated my true 120 a few times without having to take out the MB.

Are you able to twist your true even when it is all the way screwed in? I'm having a delta of 8C between 01 and 23 cores. Will be fighting with it the rest of the night...
 

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
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In which case, you need to remount your HSF, as @ 2.8 you should be at stock vcore, and your temps should be ~45 under full load. You may need to lap the HSF (not the cpu). Check it for flatness when you are remounting it.

As to the mounting, you probably will have to remove the motherboard to do this.
 

Phunk0ne

Senior member
Jul 20, 2007
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Certain TR U-120-E has some surface issues that makes contact with the IHS. I lapped mine just to make sure I would have an even and flat surface to make contact with the IHS.

Lapped TR U-120-E
 

Tempered81

Diamond Member
Jan 29, 2007
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thats a lapped true & a lapped C2D IHS. I plan to lap my true & my IHS I've heard a lot of bad stuff about the TRUE's base having ridges, and most people do lap them. You also want to use just the bare minimum spread of thermal compound on the surface of the IHS to where you can see the copper through the thin layer of thermal grease.
 

tranceport

Diamond Member
Aug 8, 2000
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My true 120 certinally has ridges. Not only can you feel them with finger or fingernail you can SEE them. I would say the ridges are on the order of fingerprint size if not slightly more depth to the "waves" or "ridges".
 

Tempered81

Diamond Member
Jan 29, 2007
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oh dude, thats horrid. Ruffles have ridges, but cpu's and heatsinks need mirror finishes. some people have lapped & polished the cpu IHS and the bottom of the TRUE and then ran the combo without even using thermal compound

you will also get a 10-15c drop using two properly mounted flat surfaces with minimal thermal compound compared to using a concave intel IHS, and a ridgid TRUE with a icecream size scoop of AS5 filling in the air pockets.

 

xj0hnx

Diamond Member
Dec 18, 2007
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I reseated the HSF, cleaned the paste off, and applied it using the line across the middle method, and now under OCCT it is sitting at 44/44/37/37, much better.