i recently got a new m.b for a laptop (hp dv2000 don't laugh) and i'm not happy with the temps off of the gpu (65 idle) with covers off. this series has had some major gpu problems in the past and the heat don't help.
i bought 2 copper shims that suppose to lower it to around 50 degrees. my questions is will the Arctic Alumina thermal paste that came with the kit keep them in place? the seller says i only need downward pressure from the heatsink. and past between the plates. what do you guys think? any alternatives. i don't wont to be pulling screws on this until i put it in the dumpster.
Hmm this is the first i've heard of using copper shims, I'd think the thermal paste should hold them in place a bit but I dont know how well this would actually work. Seems like it'd cause a mess, to be honest.
Seems to me you could likely easily make your own custom-sized copper "shims" from various products at plumbing/hardware (e.g. copper pipe "tape") or from arts/crafts supply or hobby (e.g. remote control models) stores (various thicknesses of copper "foil").
Unfortunately, I'm not very surprised that he charges $3 for "shipping" via US 1st class mail (44cent stamp + 2cents envelope + 1 minute addressing and stuffing same) what is essentially a stamp-sized sliver of copper, and a small packet of the lower-quality paste. I've often wondered if widget marketers set artificially low product prices and pad their deductible S&H "expenses" to reduce their effective income for IRS reporting purposes? (e.g. "...act now and you'll get TWO widgets for $9.99, just pay separate S&H of $8.99 each").
I have used 40 gauge copper shims that I custom fit to the proper width by bending and applying compound between the folds. That was a test with that gauge of copper because that's what I had on hand at that time. Now last night I bought 5 pieces of copper fitting tube. Cut it in 1/4th's. The pieces are 1 1/2 X 3/4 but I would like it to be more of a uniform square but it will work for now. I flatten them with a vice and sanded smooth. To answer your question if the shims fit snug chances are they won't move. But I would suggest a thermal past such as Arctic Cooling MX-2 or the new one Arctic Cooling MX-3. It has no cure time like alot of other ones do. Place the compound you have between the shims and GPU and heat sink and tighten down the heat sink. Now with a small object push on the copper shims gently. If they move then that's not good and chances are in time of moving the laptop around they could eventually come of the GPU. So far I have fixed a few DV2000 & DV6000 and after you put the laptop back together make sure you have the latest bios update verson F.3C from HP's website also in the device manager click on display properties and click on the update button and let it search online for the latest drivers for your graphics card. I had to fix my daughters DV6000 twice so far but that's because I forgot to update the bios last time. She is a great test subject for my repairs because she is on it at least on it 5 hours a day accept on weekends then its at least 12 hours straight. The DV2000 I repaired would idle between 100 & 115 F.
One might even consider jewelry supply houses for copper and silver of varying thickness and dimensions. Both are used in jewelry and likely come in a wide variety of geometries (rolls, rods, foil, thicker "plates", beads)
And, electronic supply houses and auto repair shops.
For example, digikey.com sells copper tape in multiple thicknesses, widths, and lengths.
They offer a 0.004" x 1" by 36" copper tape for $4 (currently on backorder)
There's also 3M3190E-ND, which is about 0.004" x 10" x 10" square of copper for $5 (in stock)
They also offer tapes in actual silver (not just silver colored). Of course it's going to be a bit pricey.
If it weighs less than 8oz, then digikey can ship it via 1st class mail for about $2.41
You'd likely have to dissolve off the adhesive on these particular items, but this is just an example of what's out there. There are probably some that have no adhesive.
Or, you can get "EMI Gaskets & Grounding Pads" or "Suppressor Sheets" from a place like mouser.com.
Dimensions, materials, etc. vary all over the place but copper "foil" type stuff looks like it's in the same price range as digikey.com, but it comes in thicker sizes if desired, and...it also comes in squares, rectangles, etc. instead of a roll of tape...more like a thin copper panels it would seem.
Not as likely, but one might also be able to beg scraps from any sheet metal fabricators in your area.
wow guys..thx for all the MacGyver tips. especially Masek and Albrich. i have been unsettled about what to do until i read your last 2 posts.
i think i'm going to use copper since it's easiest to get. when i get my shim stock do you suggest bonding it with thermal epoxy on top from the aluminum heatsink to the shim stock or just checking it for a snug fit as maesk suggested. i intend to use thermal paste on gpu end.