Overclock.net › Forums › Cooling › Water Cooling › Lapping the CPU? Benefits?
New Posts  All Forums:Forum Nav:

Lapping the CPU? Benefits?

post #1 of 13
Thread Starter 
Is there any benefit to lapping the Cpu surface, don't mean the WC Cpu block tongue.gif
post #2 of 13
you make the eneven surfaces more flat so that you dont get pits/gaps where thermal transfer is decreased. so int he end, you may get better temps if you do it right.

negative sides: cant resell as much in value and warranty is void.
ಠ-ಠ
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K ASUS P8P67 Deluxe EVGA GTX580 Mushkin DDR3 Silverline Stilletto(4x4)16GB 1333MHz 
Hard DriveHard DriveOptical DriveOS
WD Caviar BLACK  Kingston V200 2x LG DVD RAM w/ lightscribe Win7 Pro 64-bit 
MonitorKeyboardPowerCase
BenQ XL2410T 23.6" 120Hz LED LCD Razer Lycosa ENERMAX REVOLUTION 850W CM HAF 922M 
MouseMouse PadAudio
Razer Mamba ALLSOP high precision mousepad Creative Labs X-fi Titanium HD 
  hide details  
Reply
ಠ-ಠ
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K ASUS P8P67 Deluxe EVGA GTX580 Mushkin DDR3 Silverline Stilletto(4x4)16GB 1333MHz 
Hard DriveHard DriveOptical DriveOS
WD Caviar BLACK  Kingston V200 2x LG DVD RAM w/ lightscribe Win7 Pro 64-bit 
MonitorKeyboardPowerCase
BenQ XL2410T 23.6" 120Hz LED LCD Razer Lycosa ENERMAX REVOLUTION 850W CM HAF 922M 
MouseMouse PadAudio
Razer Mamba ALLSOP high precision mousepad Creative Labs X-fi Titanium HD 
  hide details  
Reply
post #3 of 13
Maybe a degree or two. It's not really worth the hassle.
post #4 of 13
Thread Starter 
Perhaps later I might do it (for OC), I'm addicted to WC now smile.gif
Very cool hobby smile.gif
post #5 of 13
Sometimes the CPU heatspreader isn't exactly flat either, so if you lap the heatsink (or WB) but don't lap the CPU, you won't get a perfectly flat join.

I lapped both from 800 > 1000 > 1200 > 1500 > 2000 grit wet/dry on a 14"x14" marble tile (cut perfectly flat) and saw a 4°C drop at OCCT load.

Some say it's a waste of time, others call it an incredible waste of time tongue.gif jk. It was therapeutic for me, similar to sharpening my kitchen knives or shining my shoes. I will probably lap my next CPU and WB at some point.
    
CPUMotherboardGraphicsRAM
Intel Core i5 2500k GIGABYTE GA-Z68XP-UD4 Sapphire HD 6950 2GB Mushkin Enhanced Blackline 8GB 1600 
Hard DriveHard DriveOptical DriveOS
ADATA S599 Samsung Spinpoint T NEC DVD-RW W7 
MonitorMonitorPowerCase
Dell 2007wfp Dell 2007wfp 1000w Ultra X3 Lian Li PC-V2000b Plus II 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel Core i5 2500k GIGABYTE GA-Z68XP-UD4 Sapphire HD 6950 2GB Mushkin Enhanced Blackline 8GB 1600 
Hard DriveHard DriveOptical DriveOS
ADATA S599 Samsung Spinpoint T NEC DVD-RW W7 
MonitorMonitorPowerCase
Dell 2007wfp Dell 2007wfp 1000w Ultra X3 Lian Li PC-V2000b Plus II 
  hide details  
Reply
post #6 of 13
Thread Starter 
One can watch tv while doing most of it smile.gif

And it's fun to have that pursuit of every tiny bit of more performance I will reckon smile.gif It's a addicting hobby this tongue.gif
post #7 of 13
2-3c drop avg... 5c tops if done perfectly and your block is also perfect. Also have to factor in the perfect layer of thermal paste.

As people have said, voided warranty, and not as many people want to buy a lapped CPU.

If you plan to have it forever then you don't have to worry about either. Just make sure to take your time and you will get the most out of your time. 2-3c imo isn't worth it.
post #8 of 13
Thread Starter 
I might want to change the cpu water block (apogee gt 1366 bracket), perhaps I could sell it with the cpu, motherboard (sata 2, have a sata 3 ssd) and mb waterblock combined, that it's all "refined" tongue.gif
post #9 of 13
Closer contact with the IHS requiring less TIM, so better heat transfer. Should do both the heatsink and CPU. Sometime up to a 5c+ decrease in temp.
RedCraze
(23 items)
 
  
CPUMotherboardGraphicsGraphics
Intel core i5 4690k Asus maximus VII Hero MSI 7970 OC TF3 MSI 7970 OC TF3 
RAMHard DriveHard DriveHard Drive
G.Skill Ripjaw X 2166mhz 2x8GB Samsung 840 120gb 3tb toshiba Samsung 850 evo 250gb 
Optical DriveCoolingCoolingCooling
LG BH12LS35 Blu-Ray USB 3.0 EK-D5 X-RES 250 CSQ  MCP655 EK Supremacy Evo 
CoolingCoolingCoolingCooling
Bitspower Petg Tubing & Darkside Fittings EK Coolstream XE360 w/ AP-15 Push/Pull Ek Coolstream PE360 /AP-15 Push EK-FC7970-CSQ x 2 w/Backplate 
OSMonitorKeyboardPower
Windows 7 / Windows 10 Viewsonic vx2703mh  Logitech G15 XFX PRO1050W Black Edition  
CaseMouseMouse Pad
Corsair 900d  Logitech G502 SteelSeries QcK Gaming Mouse Pad 
  hide details  
Reply
RedCraze
(23 items)
 
  
CPUMotherboardGraphicsGraphics
Intel core i5 4690k Asus maximus VII Hero MSI 7970 OC TF3 MSI 7970 OC TF3 
RAMHard DriveHard DriveHard Drive
G.Skill Ripjaw X 2166mhz 2x8GB Samsung 840 120gb 3tb toshiba Samsung 850 evo 250gb 
Optical DriveCoolingCoolingCooling
LG BH12LS35 Blu-Ray USB 3.0 EK-D5 X-RES 250 CSQ  MCP655 EK Supremacy Evo 
CoolingCoolingCoolingCooling
Bitspower Petg Tubing & Darkside Fittings EK Coolstream XE360 w/ AP-15 Push/Pull Ek Coolstream PE360 /AP-15 Push EK-FC7970-CSQ x 2 w/Backplate 
OSMonitorKeyboardPower
Windows 7 / Windows 10 Viewsonic vx2703mh  Logitech G15 XFX PRO1050W Black Edition  
CaseMouseMouse Pad
Corsair 900d  Logitech G502 SteelSeries QcK Gaming Mouse Pad 
  hide details  
Reply
post #10 of 13
Quote:
Originally Posted by huhh;13378658 
Closer contact with the IHS requiring less TIM, so better heat transfer. Should do both the heatsink and CPU. Sometime up to a 5c+ decrease in temp.

Very, very rarely will you ever see more than a 1-2C difference if you have the proper amount of TIM and the proper heatsink pressure.

Lapping just voids your warranty in the end. Not worth it at all IMO.
Will of D
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel 980x EVGA E759 Classified LE 2x EVGA 580SC 12GB Corsair GT 
Hard DriveHard DriveHard DriveOptical Drive
Sandisk Extreme OCZ Vertex LE Cavier Black random 
CoolingOSMonitorKeyboard
Watercooled Win 7 x64 NEC 30", 2x NEC P221W's DAS keyboard 
PowerCaseMouseMouse Pad
Antec 1000w Custom Logitech G9 X-Trac 
AudioAudio
SB X-fi Titanium to Yamaha 5.1 receiver Audio-GD NB-12 DAC to Musical Paradise MP-301 a... 
  hide details  
Reply
Will of D
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel 980x EVGA E759 Classified LE 2x EVGA 580SC 12GB Corsair GT 
Hard DriveHard DriveHard DriveOptical Drive
Sandisk Extreme OCZ Vertex LE Cavier Black random 
CoolingOSMonitorKeyboard
Watercooled Win 7 x64 NEC 30", 2x NEC P221W's DAS keyboard 
PowerCaseMouseMouse Pad
Antec 1000w Custom Logitech G9 X-Trac 
AudioAudio
SB X-fi Titanium to Yamaha 5.1 receiver Audio-GD NB-12 DAC to Musical Paradise MP-301 a... 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Water Cooling
Overclock.net › Forums › Cooling › Water Cooling › Lapping the CPU? Benefits?