Go Back   Computer Forums > General Computing > Hardware
Click Here to Login
Join Computer forums Today


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-27-2009, 04:22 PM   #1
In Runtime
 
Silent Wolf's Avatar
 
Join Date: May 2009
Posts: 104
Question cpu hsf

How does the lapped TRUE do better then a regular?
__________________

Silent Wolf is offline   Reply With Quote
Old 05-27-2009, 04:26 PM   #2
Golden Master
 
Cabbs's Avatar
 
Join Date: Jan 2006
Posts: 7,912
Send a message via AIM to Cabbs
Default Re: cpu hsf

I got about 4 degrees off when I lapped my TRUE along with the CPU.
__________________

__________________
=Like anime? Come to AnimeAppeal.com!=
||DFI UT P35||Q9550@3400 Mhz||Geil 4GB RAM||Radeon 5770||
Cabbs is offline   Reply With Quote
Old 05-27-2009, 04:29 PM   #3
In Runtime
 
Silent Wolf's Avatar
 
Join Date: May 2009
Posts: 104
Default Re: cpu hsf

So sanding the bottom of the hsf will make it do better?
Silent Wolf is offline   Reply With Quote
Old 05-27-2009, 04:37 PM   #4
Daemon Poster
 
Russel's Avatar
 
Join Date: May 2009
Posts: 1,037
Default Re: cpu hsf

Quote:
Originally Posted by Silent Wolf View Post
So sanding the bottom of the hsf will make it do better?
It's more that just sanding the bottom of the heatsink. I needs to be perfectly flat so if you sand it wrong it can become curved and not perform as well. Basically the idea is to remove as many of the imperfections as possible in order to get as much material in contact with the CPU. The Heatsink compound fills in the rest.
Russel is offline   Reply With Quote
Old 05-27-2009, 04:44 PM   #5
In Runtime
 
Silent Wolf's Avatar
 
Join Date: May 2009
Posts: 104
Default Re: cpu hsf

Quote:
Originally Posted by Russel View Post
It's more that just sanding the bottom of the heatsink. I needs to be perfectly flat so if you sand it wrong it can become curved and not perform as well. Basically the idea is to remove as many of the imperfections as possible in order to get as much material in contact with the CPU. The Heatsink compound fills in the rest.
Oh... ok, I just didn't really know.. Thanks!!!!

I also have another Question... Would a lapped true fit in this case? With the 250mm fan in?
Silent Wolf is offline   Reply With Quote
Old 05-27-2009, 04:57 PM   #6
Golden Master
 
Cabbs's Avatar
 
Join Date: Jan 2006
Posts: 7,912
Send a message via AIM to Cabbs
Default Re: cpu hsf

I'm not sure if it will fit in that case, you may have to run without the 250MM fan.

When you lap it, make sure you get a piece of glass to lap it on.
__________________
=Like anime? Come to AnimeAppeal.com!=
||DFI UT P35||Q9550@3400 Mhz||Geil 4GB RAM||Radeon 5770||
Cabbs is offline   Reply With Quote
Old 05-27-2009, 05:07 PM   #7
Daemon Poster
 
Russel's Avatar
 
Join Date: May 2009
Posts: 1,037
Default Re: cpu hsf

Quote:
Originally Posted by Silent Wolf View Post
Oh... ok, I just didn't really know.. Thanks!!!!

I also have another Question... Would a lapped true fit in this case? With the 250mm fan in?
The heat sink should have a 120mm fan. As far as the 250mm case fan, you may have to remove it. I installed a Dark knight in my computer last night and it just barely fit in a CoolMaste Elite 335 case. It looks a lot like the one you posted a link for. Here is a photo:



[edit]I forgot to say, if you want to pay them to lap the heatsink for you I would expect they would do a good job of it. I don't know that I would consider it worth the cost though.[end edit]
Russel is offline   Reply With Quote
Old 05-27-2009, 05:11 PM   #8
In Runtime
 
Silent Wolf's Avatar
 
Join Date: May 2009
Posts: 104
Default Re: cpu hsf

Ok, can you guys suggest a cpu fan that I can have in the case with the 250mm fan in there?
Silent Wolf is offline   Reply With Quote
Old 05-27-2009, 05:12 PM   #9
Omnipotent One
 
Atomic Rooster's Avatar
 
Join Date: Apr 2006
Location: USA
Posts: 11,161
Send a message via AIM to Atomic Rooster Send a message via Yahoo to Atomic Rooster
Default Re: cpu hsf

For an extra $19, CrazyPC.com will lap the TRUE.

The TRUE is 6.32" tall. You could grab a tape measure to see if it will fit between the fan and mobo.
Atomic Rooster is offline   Reply With Quote
Old 05-27-2009, 05:15 PM   #10
Golden Master
 
worshipme's Avatar
 
Join Date: Oct 2007
Posts: 5,603
Default Re: cpu hsf

Quote:
So sanding the bottom of the hsf will make it do better?
Definitely. The TRUE has probably one of the worst stock bases out there. This is a good and a bad thing. The good thing is that it is already one of the best if not THE best performing HSFs money can buy, it gains more from lapping that any other heatsink and pulls further ahead.
Here is a pic of a stock TRUE's base:



As you can see, it is convex. Only a small portion of the surface is making contact with the CPU, this makes for very inefficient heat transfer.

When the base is lapped, the whole of the base should be making contact with the CPU's IHS. The heat transfer is much more efficient and performance is improved drastically.

Here's PokerDegenerate's thread about lapping, it should give you a lot more info: http://www.computerforums.org/showthread.php?t=85152
__________________

__________________
AMD Phenom II X4 955 BE @ 4.0GHz + TU120E lapped - MSI 770-CD45 AM3 - 2x2GB OCZ DDR3 1333MHz - Sapphire HD 4870 - Samsung Spinpoint 500GB 7200RPM 16MB cache HDD - Tagan TG600-BZ Piperock - (Currently open test bed) - Windows Vista Home Premium 64bit.
worshipme is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 10:06 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.0