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Lap, Dance

post #1 of 4
Thread Starter 
I built this computer with two goals in mind: I wanted lots of computing power, and it had to fit into a small package. The SilverStone TJ08 is moderately sized for a mATX chassis, but it is small enough to fit into the confines of a dorm room. A case with a smaller footprint generally means downsized cooling capability as well, which is what I aimed to conquer here.

With vanilla settings on the hardware, I was still hitting temperatures too high for my comfort. Here is a snapshot of my case when I began this adventure:

DSCN4426.jpg

As you can see, airflow is quite restricted to the CPU cooler, and the "cooling" is provided by hot air drawn through the hard drive rack. This is far from optimal; I honestly don't know what I was thinking. poke.gif

To get a look at before and after results, I took average temperatures from 3 different readings: Idle, 100% load with Intel Burn Test, and 100% load using F@H. In each instance the computer was left alone for 20 minutes. Ambient temperatures were roughly 71°F/22°C. As this isn't entirely scientific and controlled, I've rounded temperatures to the nearest degree.

So as my computer sat unscathed, err... stock?..., temps were as follows:
Idle: 36°C
Load with IBT: 68°C
Load with F@H: 57°C

Take your pic, but that's just not cool.*

I thought long and hard about how I could rectify this situation, and after a few beers, the answer came clearly, VOID A WARRANTY! And spend as little money as possible!!! biggrin.gif

Lapping is a solid way to drop a few degrees and shouldn't be a worrisome process, even if you've never done it before! Take your time and clean thoroughly before reinstalling your hardware. To complete this project, I recommend having the following things on hand:
  1. Wet/Dry sandpaper from grits 200-2000
  2. A piece of glass
  3. Duct tape
  4. Isopropyl Alcohol (90% and above preferred)
  5. Cotton Swabs
  6. Latex or neoprene gloves
  7. Water and dish soap, separate
  8. A cool beverage and a TV, also separate doh.gif

There are tons of guides on lapping, so I'll provide a few tips to guide you:
  • Start with a low grit like 100 or 200 to completely flatten your CPU or heat sink. Don't move on to the next grit until you're satisfied with the evenness of the current sanding.;
  • Be conservative with the water and soap. The copper dust and water form a nasty slurry that will cover your working surface, fingers (hence the gloves), and CPU.
  • Wet sanding provides a rougher sand, dry sanding provides a mirror finish at higher level grits.
  • Clean the IHS and contact grid thoroughly with rubbing alcohol and swabs. Also, clean any Surface Mount Components on the grid side as well.

A Dachshund named Dia:
000_0004.jpg

And shots of the CPU and Mugen 2 at 1000 grit (sorry for the quality):
100_0038.jpg
100_0039.jpg

I was pressed for time and called it good enough at 1000 grit. To fill in the micro scratches, I tinned [tinted, as Artic Silver calls it) the CPU and heat sink surfaces with AS5 and a cotton swab.

The second part of my CPU cooling woes came from the fan location. I opted for a pull + shroud setup this time around. Hot glue holds the fan & shroud together.

100_0043.jpg

The provided fan clips wouldn't work in my case, so several zip-ties gave me a removable solution. The top & bottom straps simply pull over the Mugen's fins.

100_0042.jpg

The final problem to be addressed was a bad air leak at the front fan intake. A $1 sheet of arts & crafts foam and hot glue equals a quick & cheap fan gasket:

100_0040.jpg

Results:
Idle: 34°C
Load with IBT: 59°C
Load with F@H: 55°C

Idle temps dropped 2°C, IBT load temps dropped 9°C, and folding temps dropped 2°C. Worth it? Oh yes.

cheers.gif
100_0045.jpg
Edited by ILOVEPOTtery - 1/6/11 at 6:01am
Subtle Hammer
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CPUMotherboardGraphicsRAM
i7-7700HQ Acer Aspire V15 VN7-593G GTX 1060 6GB 16GB DDR4-2400 (2x8GB) 
Hard DriveCooling
OCZ RD400 256GB NVME lol 
CPUMotherboardGraphicsRAM
i5-4690k - 4.6GHz @ 1.250V ASRock Z97M OC Formula Sapphire R9 290 G.SKILL TridentX (2 x 4GB) DDR3 2400 
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Subtle Hammer
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µHammer
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CPUMotherboardGraphicsRAM
i7-7700HQ Acer Aspire V15 VN7-593G GTX 1060 6GB 16GB DDR4-2400 (2x8GB) 
Hard DriveCooling
OCZ RD400 256GB NVME lol 
CPUMotherboardGraphicsRAM
i5-4690k - 4.6GHz @ 1.250V ASRock Z97M OC Formula Sapphire R9 290 G.SKILL TridentX (2 x 4GB) DDR3 2400 
CoolingMonitorPowerCase
2x H105s: CPU and 290 (via NZXT G10) The Tube (39" LG LED) Corsair AX760 Thermaltake Core V21 
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post #2 of 4
Enjoy the beer! Science FTW!
post #3 of 4
Excellent work! You are letting your pull fan exhaust the case. You have gotten rid of nasty grills.

Possible improvements:

If you have another fan, go to push-pull on your Mugen 2, keeping your shroud.

With or without push-pull, try reversing airflow, going back to front. This will give your cpu the freshest possbile air. The other parts of your rig will survive the heat . . . except perhaps the HD's.
alpha updated
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alpha updated
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secundus
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CPUMotherboardGraphicsRAM
i7 4790k Gigabyte GA-Z97X Gaming-7 Intel HD4600 Crucial Ballistix Sport Very Low Profile 8GB Ki... 
Hard DriveCoolingOSMonitor
Samsung 840 EVO 500GB Prolimatech Megahalems Rev. C Windows 8.1 Home Premium 64-bit Acer K242HL 
KeyboardPowerCaseMouse
Dell SK-8110 (PS/2) Seasonic X460 Fanless motherboard tray from CM ATCS 840 Logitech MX 1100 
Mouse PadAudio
Dell Creative SoundBlaster X-Fi MB3 
CPUMotherboardGraphicsRAM
i7 860 Gigabyte GA P55M UD2 ZOTAC/NVidia GTX 650 Ti 2GB 4x4GB G.Skill Ripjaws DDR3-1333 CAS9 
Hard DriveOptical DriveCoolingOS
Samsung 1TB Spinpoint F3 7200.12 Plextor 24x DVD burner Cooler Master Hyper Z600R Win7 64-bit 
MonitorKeyboardPowerCase
Dell E207WFP 20-inch flat panel Logitech Wireless 510 Seasonic X-650 fully modular 80+ Gold Lian Li PC-7FN 
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post #4 of 4
Thread Starter 
Quote:
Originally Posted by ehume;11912245 
Excellent work! You are letting your pull fan exhaust the case. You have gotten rid of nasty grills.

Possible improvements:

If you have another fan, go to push-pull on your Mugen 2, keeping your shroud.

With or without push-pull, try reversing airflow, going back to front. This will give your cpu the freshest possbile air. The other parts of your rig will survive the heat . . . except perhaps the HD's.

Thanks for the friendly words! If I do push-pull, I'll want the push fan shrouded as well. To do that, I'll have to create a new HDD cage that will allow me to rotate the drives 90°. No biggy, we've got plenty of scrap sheet lying about the lab. Another day, another mod. wink.gif
Subtle Hammer
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µHammer
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CPUMotherboardGraphicsRAM
i7-7700HQ Acer Aspire V15 VN7-593G GTX 1060 6GB 16GB DDR4-2400 (2x8GB) 
Hard DriveCooling
OCZ RD400 256GB NVME lol 
CPUMotherboardGraphicsRAM
i5-4690k - 4.6GHz @ 1.250V ASRock Z97M OC Formula Sapphire R9 290 G.SKILL TridentX (2 x 4GB) DDR3 2400 
CoolingMonitorPowerCase
2x H105s: CPU and 290 (via NZXT G10) The Tube (39" LG LED) Corsair AX760 Thermaltake Core V21 
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Subtle Hammer
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µHammer
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CPUMotherboardGraphicsRAM
i7-7700HQ Acer Aspire V15 VN7-593G GTX 1060 6GB 16GB DDR4-2400 (2x8GB) 
Hard DriveCooling
OCZ RD400 256GB NVME lol 
CPUMotherboardGraphicsRAM
i5-4690k - 4.6GHz @ 1.250V ASRock Z97M OC Formula Sapphire R9 290 G.SKILL TridentX (2 x 4GB) DDR3 2400 
CoolingMonitorPowerCase
2x H105s: CPU and 290 (via NZXT G10) The Tube (39" LG LED) Corsair AX760 Thermaltake Core V21 
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