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Lapped Sandy 3700+ CCBWE *56K* - Page 2

post #11 of 12
Quote:
Originally Posted by alk View Post
Ok, Ive been lapping like hell over the last week.

I have now lapped>

My AC Freezer 64 Pro
My mobo chipset HSF
My Sandy 3700+

In the future, I'm going to lap my 7600GT stock cooler.

Heres some before and after pics>

Before - You can see quite alot of imperfections on the surface, and a nasty gouge out of one of the edges, probably due to a badly installed stock HSF by my PC supplier!


Antistatic foam stuck to the pins to provide some protection.


And after 2 hours solid lapping from 280>400>800>1200>1500>2000>2500 grit:


And the performance increase? Well I dropped about 2 degrees C on my core, which is not bad considering before lapping my AC64Pro and 3700+ I was loading at 49 degrees C with these particular settings in the BIOS.


The surface of the CPU was HORRENDOUSLY uneven. I have no idea why AMD doesn't sell their CPU's pre-lapped, and why the IHS has a zinc coating instead of being solid copper! I guess zinc is easier to print on or something!

PS. If your about to post "Why did you do that? Just remove the IHS!!!", don't bother, Ive thought about this already, and prefer the bling bling option!
It's because Zinc reacts really quickly with oxygen and makes a protective layer. once it forms this layer, it's basically stable and doesn't react. This layer prevents the copper from reacting and becoming tarnished and gross.

But nice job.
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Desktop
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CPUMotherboardGraphicsRAM
AMD FX 8120 Gigabyte XA990-UD3 Gigabyte GTX670 Windforce III G. Skill RipJaws 
Hard DriveHard DriveOptical DriveCooling
Crucial M4 Western Digital Blue LG Dual Layer Sata Antec Kuhler 920 
OSMonitorKeyboardPower
Windows 8 Dell 2007wfp 20.1" Logitech G710+ Corsair Professional HX650 
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post #12 of 12
Thread Starter 
Quote:
Originally Posted by mudd View Post
don't spread it over the processor. what you want to do is rub some into the heatsink and then wipe it off. then just put a drop on your proc and put your heatsink back on. no spready spready
Thats worked out rather nicely. a 1 degrees C drop. Once it cure I imagine therell be a bigger drop! Thanks for the tip! REP+
    
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CPUMotherboardGraphicsRAM
Intel Centrino T2300 @ 1.83 GHz Intel GM945 Express Chipset Intel GMA950 2x1GB PC2-5300 667MHz 
Hard DriveOptical DriveOSMonitor
250GB 7200rpm WD Scorpio Black USB External DVD/CDRW Windows XP Pro SP3 12.1" 1024x768 DVI 
PowerCaseMouse
4400mAh Li-ion (7+ hours on power saving profile) Carbon Fibre with Magnesium alloy roll cage IBM Trackpoint 
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Reply
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