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  #1 (permalink)  
Old 7th August, 2003, 10:39 PM
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8rda3+ & Slk-900u

Just received a Thermalright Slk-900u today. Looking forward to the joy of installation - might even slap the Vantec Iceberg on the Northbridge I've got lying around!

Anyway, I am just looking for installation tips.

One question : Should I use the pre-packed thermal paste or Artic Silver 3?

Regards
Geeza
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Old 7th August, 2003, 11:31 PM
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Send a message via ICQ to golfer49

As Iii
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Abit NF7-S rev 2.0 Barton 2500 AQZFA0340SPMW 11 x 214
w/SLK900A & 92 mm fan (38 deg C)
2 x WD400JD---Gainward Ti4200 8 X AGP
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Abit NF7-S rev 2.0 XP1700DLT3C 10 x 225
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Old 7th August, 2003, 11:50 PM
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I've had better results after I lapped my 900u and used ceramic'
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Old 8th August, 2003, 12:46 AM
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The installation wasn't tricky at all...just make sure all the springscrews thread all the way into the studs that hold the Black X in place. One of mine would only thread in about 2 turns. Make sure you tighten the springscrews in a criss-cross pattern.

I too lapped my 900u....Every Thermalright heatsink I ever bought needed to be lapped, they all had those machining lines that could be heard by running my fingernail over them and I always use AS3.

Just take your time mounting and you'll have no problems, good luck and happy o/c'n
flipdoggiedog
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Old 8th August, 2003, 06:27 AM
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Speaking of Iceberg, Northbridge and lapping - wait until you see how concave your Northbridge is. If you just 'slap on' the Iceberg, you'll only be contacting a thin ring around the outside diameter of the Northbridge surface.

It took me an hour with 600-grit paper to get mine flat.

Happy modding!
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Old 8th August, 2003, 05:06 PM
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Slk-900u

My Slk also is poor quality and will require lapping. Any tips as I haven't lapped a heatsink before...?

With regards to Northbridge, I lapped my former mobo the 8rda+ successfully.

Thanks for all the tips gents!

Regards
Geeza
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Athlon XP2500+ @ 2209.55(10 X 220)
SLK-900U & 92mm YS-Tech 50cfm
Epox 8RDA3+ (2.78 Soltek Drivers) 3827 bios
Corsair XMS3200 @ 4-3-3-2.5 2.768V
Crucial Radeon 9800 Pro 1.6V
Soundblaster Audigy 2
Logitech Z-680 5.1 Speakers
Sony DVD RW DRU-500A
AOpen 52x24x52 Cd-Writer
2 x WD Raptor SATA Raid 0 (Striped)
Vantec Stealth Aluminum 470W
Coolermaster ATCS-201-SXK (blowhole mod/5.25” fan rheobus)
Mitsubishi Diamond Pro 740 SB
3DMark2001: 18404
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Old 10th August, 2003, 02:31 PM
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ya.. it's kinda tricky, since the slk900u isn't square on the bottom. You'll end up having to grind it up and down alot more than side to side... which might result in a less than mirror finish. just go slow and take alot of time doing it.. maybe you can reach that mirror finish
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Old 10th August, 2003, 04:30 PM
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Geeza, I'd like to know how you lapped your NB , Did you lap the onboard chip or the heatsink? Hints for lapping a cpu heatsink: Get a clean piece of window glass, about 6 inches square or close to it, (6" X 9" , 5" X 7" ....). Tape a piece of medium grit sandpaper (200-320) business side up of course, wet/dry automotive bodyworking type seems to work best because you can use a little bit of water to help things along. Work the contact side of the heatsink in figure 8's on the sandpaper, give the sink a 1/4 turn every so often ( do about 10 figure 8's then stop and re-orient or index the sink) . when the surface is uniform switch out to a finer grit and repeat --600 grit--then 1000 grit if you can get it. If you want really smooth you can then go to household cleanser( with pumice ) or polishing compound ( again automotive supplies). If you want really, really flat you can get 2 pieces of glass and lap them face to face ( figure 8's and indexing ) with the polishing compound until they clean up or I should say both have the same surface finish. I finish with 5 micron polishing powder but that might be a little hard to get. Go slow and don't press too hard, you don't want to rock the heatsink and round the edges.
Bob
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Old 10th August, 2003, 08:41 PM
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Talking Lap-dancing!

Thanks for the advice Gents - very much appreciated.

Timbob - I read similar advice for lapping by doing a Google search. The other site also advised a small amount of washing up liquid to aid the lapping.

Ref: Northbridge lapping - I did the chip itself using the guide from www.8rdafaq.com (mod's section).

It really was a doddle - and a little scary at the same time. You can imagine my relief when the system booted fine!

Regards

Geeza
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Athlon XP2500+ @ 2209.55(10 X 220)
SLK-900U & 92mm YS-Tech 50cfm
Epox 8RDA3+ (2.78 Soltek Drivers) 3827 bios
Corsair XMS3200 @ 4-3-3-2.5 2.768V
Crucial Radeon 9800 Pro 1.6V
Soundblaster Audigy 2
Logitech Z-680 5.1 Speakers
Sony DVD RW DRU-500A
AOpen 52x24x52 Cd-Writer
2 x WD Raptor SATA Raid 0 (Striped)
Vantec Stealth Aluminum 470W
Coolermaster ATCS-201-SXK (blowhole mod/5.25” fan rheobus)
Mitsubishi Diamond Pro 740 SB
3DMark2001: 18404
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Old 12th August, 2003, 10:55 PM
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Almost done

I've lapped my Slk-900u - and not a bad job done!

When you hold it up to the light you can see there are lots of tiny scratches , but I can't feel them when running my fingernail over. Its got a reflective,smooth finish. I'm pleased with the results.

I used a product called "Bartenders Keep" for final polishing. Its bicarbonate like substance thats used for cleaning all sorts of material, from enamel to copper. Worked a treat!

Overall it took 1.5 hours to complete.

Regards
Geeza
__________________
Athlon XP2500+ @ 2209.55(10 X 220)
SLK-900U & 92mm YS-Tech 50cfm
Epox 8RDA3+ (2.78 Soltek Drivers) 3827 bios
Corsair XMS3200 @ 4-3-3-2.5 2.768V
Crucial Radeon 9800 Pro 1.6V
Soundblaster Audigy 2
Logitech Z-680 5.1 Speakers
Sony DVD RW DRU-500A
AOpen 52x24x52 Cd-Writer
2 x WD Raptor SATA Raid 0 (Striped)
Vantec Stealth Aluminum 470W
Coolermaster ATCS-201-SXK (blowhole mod/5.25” fan rheobus)
Mitsubishi Diamond Pro 740 SB
3DMark2001: 18404
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Old 13th August, 2003, 02:14 AM
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I hope your "Bartenders Keep" didn't leave any residue on the heatsink that will hinder thermal transfer. Did you use rubbing alcohol to clean it after polishing?

If not I'm sure your whole house will blow up.
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Old 13th August, 2003, 07:41 AM
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SLK-900u

I used nitro-glycerin for the final rubbing...!!

Yeah, rubbing alchocol applied.

Regards
Geeza
__________________
Athlon XP2500+ @ 2209.55(10 X 220)
SLK-900U & 92mm YS-Tech 50cfm
Epox 8RDA3+ (2.78 Soltek Drivers) 3827 bios
Corsair XMS3200 @ 4-3-3-2.5 2.768V
Crucial Radeon 9800 Pro 1.6V
Soundblaster Audigy 2
Logitech Z-680 5.1 Speakers
Sony DVD RW DRU-500A
AOpen 52x24x52 Cd-Writer
2 x WD Raptor SATA Raid 0 (Striped)
Vantec Stealth Aluminum 470W
Coolermaster ATCS-201-SXK (blowhole mod/5.25” fan rheobus)
Mitsubishi Diamond Pro 740 SB
3DMark2001: 18404
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