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| Thread ID: 51921 | 2004-12-03 08:09:00 | Light Weight Good Socket A Headsink | noone (22) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 299458 | 2004-12-03 08:09:00 | My amd stock heatsink is not pulling its weight around , yet there seems to be no socket A heatsinks on the market which are under to 300g weight limit of a heatsink set by AMD , is this a un necessary weight limit that i should ignore when choosing a heat sink or are there any GOOD heatsinks that are lighter then 300g as well as cooling your cpu better then stock heatsink / fan combo can | noone (22) | ||
| 299459 | 2004-12-03 09:04:00 | what cpu do you have ? what cpu temps, case temps and room temps? |
tweak'e (174) | ||
| 299460 | 2004-12-03 09:24:00 | Mass (and surface area) is good for a heat sink, copper mass is better than aluminium mass, it's a better conductor. If you want an efficient heatsink that can do the job with minimal fan assistance you'll need one in the 300+ range. I have a Zalman cnps copper heatsink in a tower setup which is well over the recommended weight with no issues that I'm aware off. It will depend a good deal on the build quality of your motherboard. |
Murray P (44) | ||
| 299461 | 2004-12-03 10:15:00 | Amd Xp 2800 + Case temp = 25deg - 30deg Cpu Temp = mobo sensor - 60 at max , 54ish at idle |
noone (22) | ||
| 299462 | 2004-12-03 23:07:00 | bump | noone (22) | ||
| 299463 | 2004-12-04 00:04:00 | Even a small Thermalright like the slk700 is over 500gms. You have a choice, either a heavier heatsink or a noisy fan. | PaulD (232) | ||
| 299464 | 2004-12-04 00:27:00 | If your stock AMD heatsink is anything like the one I just bought with an XP2400, then it is not that well made. Mine has a plated copper base screwed with 4 c/s screws to the aluminium heatsink. The surface finish of the copper under the plating was rough to say the least, but worse, the surface was manifestly not flat. Even worse was the flatness of the under side, I could insert a 0.002" feeler gauge between the copper base and the aluminium (thats 0.05mm for uninitiated!). The aluminium heatsink was hollow by about 0.02mm in a strip running the length of the sink and about a third of the width. So out came my BS Grade A lapping plate, and initially used 280 grit silicon carbide paper lubricated with turps to get the base plate and heatsink so-so flat on each side. Then I used 380 grit paper to improve surface finish. Then I finished off directly on the plate with 400 grit silicon carbide powder plus turps. It takes an awful lot of elbow grease to remove 0.05mm by hand. Finally after cleaning the base was re-screwed to heatsink with a thin smear of Arctic Silver. The bios reported temperature from the thermal diode fell from about 60deg C to about 50deg C after that treatment. I still dont like the design though. The benefit of the copper base plate must be outweighed by the thermal resistance of the copper/aluminium junction. |
Terry Porritt (14) | ||
| 299465 | 2004-12-04 00:52:00 | yeah thats my heatsink , as well as the fan being noisy and crap , it does not do a good job , the only good thing is it s weight | noone (22) | ||
| 299466 | 2004-12-04 01:11:00 | The other thing I noticed with the XP2400, was that when the bios reported temperature of the cpu was around 60deg, the aluminium heatsink didnt feel at all warm to touch. So either it was doing a good job of getting rid of the heat, or, it wasnt conducting as much heat from the cpu as it should have been doing. With my old Athlon Thunderbird 1.33GHz, there is no thermal diode, the bottom of the cpu touches a thermistor bead in the socket and a dob of heatsink compound provides conduction. I just dont 'believe' the temperature reported by this which is usually around 42deg, with 26 deg system temperature, though it does have a 120mm side case fan blowing onto it. I have read that the software for these thermistors add about 10 deg on, to estimate what the cpu core temperature would be. Without the case fan the 1.33Ghz cpu gets up to over 50deg, and a corresponding system temperature rise. These temperatures are when the ambient air temperaure is around 20deg. |
Terry Porritt (14) | ||
| 299467 | 2004-12-05 21:27:00 | i found a Thermaltake heatsink that is only 285grams - which is under the weight limit , yet i dont know if its any good , i know its not going to be as good as the heavy heatsinks but has anyone got any idea on it www.thermaltake.com VOLCANO 10+ SERIES |
noone (22) | ||
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