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Cooking Bacon on my nForce2 South-Bridge (again).
Hi,
I just bought myself a new Digital Thermometer today, and the first thing I could think of testing was the *South-Bridge* of the NF7-S system I just sold. Since the machine didn't have any hard-disks I just let it load up memtest x86 and loop for a while. 15 minutes later. . . .the reading from LCD display was. . . .68°C lol! I know we discussed this before (a few months ago), but isn't that too hot? I did try to find some pre-made heatsinks in the *U.K* but no luck. Why didn't anyone start selling heatsinks for the nForce2 boards? The South-Bridge is situated very close to the AGP slot so I have no idea how people are using Zalman heatsinks, surely they get in the way of the AGP card, especially if it has a meaty heatsinks itself? -- Wayne ][ new specs coming soon! |
"Wayne Youngman" wrote in message ... Hi, I just bought myself a new Digital Thermometer today, and the first thing I could think of testing was the *South-Bridge* of the NF7-S system I just sold. Since the machine didn't have any hard-disks I just let it load up memtest x86 and loop for a while. 15 minutes later. . . .the reading from LCD display was. . . .68°C lol! I know we discussed this before (a few months ago), but isn't that too hot? I did try to find some pre-made heatsinks in the *U.K* but no luck. Why didn't anyone start selling heatsinks for the nForce2 boards? The South-Bridge is situated very close to the AGP slot so I have no idea how people are using Zalman heatsinks, surely they get in the way of the AGP card, especially if it has a meaty heatsinks itself? -- Wayne ][ new specs coming soon! I have a different nF2 mobo, but I noticed the Southbridge very warm (uncomfortably hot) to the touch also. I just stuck on a passive heatsink of appropriate size (no more than a few mm larger) with some frag tape and now just warm ;-) If the Mk.I fingertip tells you it's hot, cool it! Everyone is always trying to improve the cooling of the Northbridge, video chipset, etc... The Southbridge need a little help to ;-) FRH |
I'm sure if the chip needed to run cooler it would have a heatsink fitted.
Having said that I did try a memory heatsink on my NF7 SB...it did keep it cooler but this did not result in improvement in any element of the systems performance. -- *****Replace 'NOSPAM' with 'btinternet' in the reply address***** "Wayne Youngman" wrote in message ... Hi, I just bought myself a new Digital Thermometer today, and the first thing I could think of testing was the *South-Bridge* of the NF7-S system I just sold. Since the machine didn't have any hard-disks I just let it load up memtest x86 and loop for a while. 15 minutes later. . . .the reading from LCD display was. . . .68°C lol! I know we discussed this before (a few months ago), but isn't that too hot? I did try to find some pre-made heatsinks in the *U.K* but no luck. Why didn't anyone start selling heatsinks for the nForce2 boards? The South-Bridge is situated very close to the AGP slot so I have no idea how people are using Zalman heatsinks, surely they get in the way of the AGP card, especially if it has a meaty heatsinks itself? -- Wayne ][ new specs coming soon! |
"BigBadger" wrote I'm sure if the chip needed to run cooler it would have a heatsink fitted. Having said that I did try a memory heatsink on my NF7 SB...it did keep it cooler but this did not result in improvement in any element of the systems performance. Hi, well I did notice that the some DFI nForce2 boards have a heatsink installed on the South-Bridge. Something just tells me that leaving it with no help is gonna reduce the life of the board. I mean its running hotter than my CPU. it's a small thing but it *itches* me from time to time. Between that and the (soon to BGA heatsinked)graphics card I think the system temps are forced higher. There must be something I can buy online in the U.K that will do the job? You notice that the Mosfets don't have a heatsink, people mod them (ABIT OTES lol). I suppose they are more critical to a stbale system though. -- Wayne ][ Concepts, Theory, Learning Curves, and woman with big bOObs! |
"Homie" wrote Many semiconductors are designed to run at temps as high as 125c....... but the cooler they are kept , the better the slew rates, the better the slew rate, the better the thermal efficiency, the better the thermal efficiency, the cooler they run....the cooler they run, the longer they last ....... Cool huh? Hehe, indeed. I was working from the angle off: a) Making the Southbridge as long-living as possible b) Stop this little oven from heating up my case (like my 9800, soon to be sinked) -- Wayne ][ Concepts, Theory, Learning Curves, and woman with big bOObs! |
" it's a small thing but it *itches* me from time to time. Between that and the (soon to BGA heatsinked)graphics card I think the system temps are forced higher. There must be something I can buy online in the U.K that will do the job? Indeed there is. They are out of stock at the moment, but this link http://www.overclockers.co.uk/acatal...oolers_57.html takes you to Overclockers.co.uk and the Vantec Iceberq CCB-A1C, used to use one of these on my old Epox Nforce2 board - used the Iceberq for the Northbridge, and it comes with 2 small passive heatsinks one of which fits perfectly on the Southbridge. Well worth the tenner or so plus VAT. Hellraiser........... |
Wayne Youngman wrote:
"Homie" wrote Many semiconductors are designed to run at temps as high as 125c....... but the cooler they are kept , the better the slew rates, the better the slew rate, the better the thermal efficiency, the better the thermal efficiency, the cooler they run....the cooler they run, the longer they last ....... Cool huh? Hehe, indeed. I was working from the angle off: a) Making the Southbridge as long-living as possible b) Stop this little oven from heating up my case (like my 9800, soon to be sinked) You do realise that. even with a heatsink, it will produce just as much heat and it will still be released into your case? -- ~misfit~ |
Frank Hagan wrote:
"Wayne Youngman" wrote in message ... Hi, I just bought myself a new Digital Thermometer today, and the first thing I could think of testing was the *South-Bridge* of the NF7-S system I just sold. Since the machine didn't have any hard-disks I just let it load up memtest x86 and loop for a while. 15 minutes later. . . .the reading from LCD display was. . . .68°C lol! I know we discussed this before (a few months ago), but isn't that too hot? I did try to find some pre-made heatsinks in the *U.K* but no luck. Why didn't anyone start selling heatsinks for the nForce2 boards? The South-Bridge is situated very close to the AGP slot so I have no idea how people are using Zalman heatsinks, surely they get in the way of the AGP card, especially if it has a meaty heatsinks itself? -- Wayne ][ new specs coming soon! I have a different nF2 mobo, but I noticed the Southbridge very warm (uncomfortably hot) to the touch also. I just stuck on a passive heatsink of appropriate size (no more than a few mm larger) with some frag tape and now just warm ;-) If the Mk.I fingertip tells you it's hot, cool it! Everyone is always trying to improve the cooling of the Northbridge, video chipset, etc... The Southbridge need a little help too ;-) I'm running two Soltek SL-75FRN2-L nForce2 Ultra400 boards and hadn't even thought about SB temps until I read this. I held my finger on them and it was uncomfortably hot. I had a couple of cheap "Coolermaster" NB 'sinks with frag tape on them in my drawer, I'd just bought them for the 40mm fans to fit to the passively cooled NB 'sink on these boards. I checked them out and I could fit them, with a little overlap (not touching anything live). So that's what I've done, I don't know if it'll make any difference to the longevity of my boards but they weren't doing any good in the drawer. BTW, they didn't make very good contact. The SB seems to be *very* concave. However the 'sinks get warm so I'm hoping they're helping and not just trapping a pocket of hot air 'tween the sink and the chip. One of them has the advantage of being right in the airflow from the AGP card (different cards in the machines) so doesn't get as warm as the other. -- ~misfit~ |
On Mon, 09 Feb 2004 18:09:56 GMT, "Homie" wrote:
Many semiconductors are designed to run at temps as high as 125c....... but the cooler they are kept , the better the slew rates, the better the slew rate, the better the thermal efficiency, the better the thermal efficiency, the cooler they run....the cooler they run, the longer they last ....... Cool huh? Agreed... However, having adequate design margins to run within timing spec at 125 degrees C is not the same as being specified for operation at 125 degrees C. Consumer silicon is normally spec'd for continuous operation at a maximum 70 degrees C case temperature, unless explicitly stated otherwise . For example, the latest P4 Northwood processors are spec'd by Intel for 70 degrees C and the P4 EE at 64 degrees C, (both core temperatures) for 'reliable' operation. [ Above these temperatures, built-in hardware thermal-protection will arbitrarily cut-in at an unspecified (by Intel) core temperature to lower the internal clock rate to preserve silicon integrity. ] Beware of case temperatures in excess of 80 degrees C on high-density devices on the latest silicon processes. Thermal stresses on the silicon vias and thin-dielectrics. Also, the device density magnifies the failure incidence. It just takes one via or one transistor in the 100million or so in a CPU or GPU to generate a useless lump of silicon. Devices rated for continuous 125 degrees C operation are low-density very conservatively spec'd and normally radiation-hardened too. I doubt if Spirit or Opportunity incorporate any large devices on 0.15u (or smaller) processes...... John Lewis Homie -- Mainboards, Videocards & CPU pin repair. http://motherboardrepair.com "Wayne Youngman" wrote in message ... Hi, I just bought myself a new Digital Thermometer today, and the first thing I could think of testing was the *South-Bridge* of the NF7-S system I just sold. Since the machine didn't have any hard-disks I just let it load up memtest x86 and loop for a while. 15 minutes later. . . .the reading from LCD display was. . . .68°C lol! I know we discussed this before (a few months ago), but isn't that too hot? I did try to find some pre-made heatsinks in the *U.K* but no luck. Why didn't anyone start selling heatsinks for the nForce2 boards? The South-Bridge is situated very close to the AGP slot so I have no idea how people are using Zalman heatsinks, surely they get in the way of the AGP card, especially if it has a meaty heatsinks itself? -- Wayne ][ new specs coming soon! |
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