RE: [H] AMD64 powers off
I'm not quite sure what Wayne means by phase change material. I'm guessing he means heatsink tape as opposed to heatsink paste. Either way, both work brilliantly if used correctly. Heatsink tape/pad has the advantage of being clean to handle and remove as opposed to the paste. But as long as you smear a thin layer between the heatsink and the semiconductor, you can achieve the exact same results. The purpose of the stuff is to maximise heat transfer through a number of factors but predominantly to do away with any air pockets which may take away the efficiency. But anything more than just a thin layer will result in the stuff acting as an insulator rather than a conductor transferring nothing. And to add to that, seeing some CPU's coming back to my wholesaler with compound all over the sides and the pins, as though the stuff was so thick that it just oozed everywhere, it's no wonder why the CPU has failed!! Admittedly though, I often see an overzealous use of the compound in amplifiers, particularly car audio. I was amazed and appalled when I saw a Sony XM-754HX amp with fried output transistors. Admittedly, they died after about 3 years of constant abuse but even so, they would've lasted a lot longer if there was a thin layer of compound instead of the gobs of yoghurt I found all over them. After replacing the transistors, I applied more appropriate amounts and the thing hasn't even hit the overheat-protect circuit like it frequently used to. Back to CPU's, for the record, my dual Opterons are running at 46C and 42C on a full load and that's using just standard heatsink paste with Swiftech MCX6400-V heatsinks. No funky Arctic Silver, Whizbangthingamebob Wondercream, etc - just the standard heatsink compound found in your favourite electronics store (or wholesaler in my case). Adios, Tony --- TAMA - The Strongest Name in Drums --- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thane Sherrington Sent: Thursday, 23 June 2005 9:37 To: The Hardware List Subject: Re: [H] AMD64 powers off At 06:39 PM 22/06/2005, Wayne Johnson wrote: It's suppose to have phase change material not paste. I thought you said there was paste all over the place? The fact still remains that the thing sounds cooked to me. It wouldn't surprise me if he forgot to put the HSF on before powering up, cooked it is hoping that you can will it back to life. I got it working on my motherboard using Arctic Silver 5. Seems to be running at 51C idle using his heat sink.
Re: [H] AMD64 powers off
At 08:46 AM 23/06/2005, Wayne Johnson wrote: At 07:36 AM 6/23/2005, Thane Sherrington typed: I got it working on my motherboard using Arctic Silver 5. Seems to be running at 51C idle using his heat sink. What did he use, some latex caulk? lol Heh heh. He used that old style white compound, but he used about a pound of it. :) Here's a strange thing. On his Gigabyte motherboard, the CPU climbs steadily updwards (it's at 64C now sitting in the CMOS) with the same compound and heat sink (I have the heat sink running from a power supply connector, since when I attached it to the motherboard, the CPU climbed to 82C in about a minute and shutdown.) I've updated the BIOS, but I'm thinking the motherboard must be doing something weird to be heating the CPU this way. I can't check the voltages, as it just says OK for all voltages instead of showing actual numbers. Clever. T
RE: [H] AMD64 powers off
Do you have another CPU to test on his mobo? Process of elimination will get you there but it sounds like a fried CPU to me if it's overheating like that. Adios, Tony --- TAMA - The Strongest Name in Drums --- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thane Sherrington Sent: Thursday, 23 June 2005 10:32 To: The Hardware List Subject: Re: [H] AMD64 powers off Here's a strange thing. On his Gigabyte motherboard, the CPU climbs steadily updwards (it's at 64C now sitting in the CMOS) with the same compound and heat sink (I have the heat sink running from a power supply connector, since when I attached it to the motherboard, the CPU climbed to 82C in about a minute and shutdown.) I've updated the BIOS, but I'm thinking the motherboard must be doing something weird to be heating the CPU this way. I can't check the voltages, as it just says OK for all voltages instead of showing actual numbers. Clever. T
Re: [H] AMD64 powers off
I thought that I read somewhere that when you are in bios looking at the temps, the CPU is actually runnng full speed, not idling? Or maybe that was just on some mobos? At 08:46 AM 23/06/2005, Wayne Johnson wrote: At 07:36 AM 6/23/2005, Thane Sherrington typed: I got it working on my motherboard using Arctic Silver 5. Seems to be running at 51C idle using his heat sink. What did he use, some latex caulk? lol Heh heh. He used that old style white compound, but he used about a pound of it. :) Here's a strange thing. On his Gigabyte motherboard, the CPU climbs steadily updwards (it's at 64C now sitting in the CMOS) with the same compound and heat sink (I have the heat sink running from a power supply connector, since when I attached it to the motherboard, the CPU climbed to 82C in about a minute and shutdown.) I've updated the BIOS, but I'm thinking the motherboard must be doing something weird to be heating the CPU this way. I can't check the voltages, as it just says OK for all voltages instead of showing actual numbers. Clever. T -- JRS [EMAIL PROTECTED] Please remove **X** to reply... Facts do not cease to exist just because they are ignored.
Re: [H] AMD64 powers off
At 12:11 PM 23/06/2005, FORC5 wrote: is it possible the mb connector is controlling the cpu fan rpm ? maybe not full voltage on the header ? That's what I'm assuming, but I see no way on this motherboard to change the fan header voltage. Stupid design, I think. My opinion of Gigabyte, not good to begin with, is being to drop. T
Re: [H] AMD64 powers off
At 11:24 AM 23/06/2005, JRS wrote: I thought that I read somewhere that when you are in bios looking at the temps, the CPU is actually runnng full speed, not idling? Or maybe that was just on some mobos? Now with his motherboard and heatsink, the CPU is reading 74C whilst running AV scans in a WinPE enviroment. I think the sensor on the motherboard has to be flaky. The heat sink doesn't feel warm - perhaps it isn't transferring heat from the CPU, but I doubt it. T
Re: [H] AMD64 powers off
At 02:44 PM 6/22/2005, Thane Sherrington typed: Is the CPU toast, or is there something else I can try? Prayer. Sounds to me like he expects you to work miracles. This is exactly why AMD doesn't want customers to use un-approved heat sinks. --+-- Wayne D. Johnson Ashland, OH, USA 44805 http://www.wavijo.com
Re: [H] AMD64 powers off
At 03:51 PM 22/06/2005, Wayne Johnson wrote: Prayer. Sounds to me like he expects you to work miracles. This is exactly why AMD doesn't want customers to use un-approved heat sinks. It's an approved heat sink. It just wasn't installed by an approved installer. :) T
Re: [H] AMD64 powers off
sounds like temperature and HE is lying to you. he fried it most likely ( if that is possible with the new chips ) I assume you pulled the hs/fan back off to check contact ? might be cocked a little fp At 11:44 AM 6/22/2005, Thane Sherrington Poked the stick with: I have an AMD64 in the shop that a customer installed and covered with thermal compound (it looked like the CPU had been caulked into place.) He was complaining that it would work fine for awhile and then the temp would spike to 80C. I cleaned the CPU, put new thermal compound on it, and it powers up but immediately (like within 3 seconds) powers down (nothing on the monitor.) Is the CPU toast, or is there something else I can try? T -- Tallyho ! ]:8) -- Don't sneeze when someone is cutting your hair.
Re: [H] AMD64 powers off
At 03:29 PM 6/22/2005, Thane Sherrington typed: It's an approved heat sink. It just wasn't installed by an approved installer. :) It's suppose to have phase change material not paste. I thought you said there was paste all over the place? The fact still remains that the thing sounds cooked to me. It wouldn't surprise me if he forgot to put the HSF on before powering up, cooked it is hoping that you can will it back to life. --+-- Wayne D. Johnson Ashland, OH, USA 44805 http://www.wavijo.com
Re: [H] AMD64 powers off
The approved all use thermal tape. So I'm betting this jackass left the tape on, applied plenty of past, so he had basically no connection. -Original message- From: Wayne Johnson [EMAIL PROTECTED] Date: Wed, 22 Jun 2005 16:37:18 -0500 To: The Hardware List hardware@hardwaregroup.com Subject: Re: [H] AMD64 powers off At 03:29 PM 6/22/2005, Thane Sherrington typed: It's an approved heat sink. It just wasn't installed by an approved installer. :) It's suppose to have phase change material not paste. I thought you said there was paste all over the place? The fact still remains that the thing sounds cooked to me. It wouldn't surprise me if he forgot to put the HSF on before powering up, cooked it is hoping that you can will it back to life. --+-- Wayne D. Johnson Ashland, OH, USA 44805 http://www.wavijo.com
Re: [H] AMD64 powers off
At 05:41 PM 6/22/2005, CW typed: The approved all use thermal tape. So I'm betting this jackass left the tape on, applied plenty of past, so he had basically no connection. I used an unapproved Zalman Flower with just a touch of Artic Silver 3 with my AMD64 3800+ everything has been fine for the last 9 mo or so. It wouldn't surprise me if there is so much paste that the cpu is pasted right to the ZIF socket on the mombo. Some of dem machino guys that no nothin stink more is betterer. --+-- Wayne D. Johnson Ashland, OH, USA 44805 http://www.wavijo.com
