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#11
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On Tue, 27 Sep 2005 22:49:30 GMT, kony wrote:
IMO, one should not expect good service from a drive if it's operating in the upper end of it's allowed temp range. Why do you believe that temp is important for hard disks but not for CPUs? Same silicon, isn't it? -- Greatest Movie Line Ever http://home.houston.rr.com/rkba/MovieLine.wmv "What is history but the story of how politicians have squandered the blood and treasure of the human race?" --Thomas Sowell |
#12
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Bob wrote: Why do you believe that temp is important for hard disks but not for CPUs? Same silicon, isn't it? What's the average lifepan of a CPU run at its rated maximum allowed temperature verses an HD run at its rated maximum? |
#14
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#15
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On 28/9/05 3:03 pm, in article ,
"kony" wrote: On Wed, 28 Sep 2005 10:17:50 GMT, (Bob) wrote: On Tue, 27 Sep 2005 22:49:30 GMT, kony wrote: IMO, one should not expect good service from a drive if it's operating in the upper end of it's allowed temp range. Why do you believe that temp is important for hard disks but not for CPUs? Same silicon, isn't it? That's just it, it's not "same silicon". Drives are comprised of many other materials, mechanical stress, wear, and dependencies in addition to power regulation. Intel will be incorporating power regulation on their CPUs in the future, and we may then see CPUs more susceptible to heat too, but even so it's likely higher than HDD limit mentioned previously of 55C. 55C is not a limit seen on modern silicon, clearly the HDD limit is other componentry. For the time being, the core logic chips on CPUs are not generally seen to be the failure points, save for some random manufacturing error like a bad batch of epoxy in their casings. this is in addition to the issue LM&C mentioned, that the average lifespan of a CPU is far beyond that reasonable for a system in general, that the CPU is among the parts expected to be longest lasting while the drive is far from it. Further, "many" people would suffer far less loss from a CPU failure than a drive failure (even discounting a presumption that people aren't making regular backups like they should). I don't think it's fair to sell a product with a 5 year life that has a 1 year warranty and fails in 18 month. -- Nik http://www.pc-gear.co.uk |
#16
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On Wed, 28 Sep 2005 15:31:16 +0100, "Nik Simms (Web Developer)"
wrote: I don't think it's fair to sell a product with a 5 year life that has a 1 year warranty and fails in 18 month. You haven't bought a new American car lately, have you. It used to be that if you could get a new Chrysler out of the lot and right back in without a tow truck, you were lucky. I've seen cars with the window sticker still on being towed. -- Greatest Movie Line Ever http://home.houston.rr.com/rkba/MovieLine.wmv "What is history but the story of how politicians have squandered the blood and treasure of the human race?" --Thomas Sowell |
#17
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You cannot determine drive temp with only the software temp
reading, because it is only the temp of the chip taking it, a chip isolated for each and every other chip. The PCB insulates more than conducting heat (including traces) so the temp report can only be used in conjunction with other means. I'll measure the drive casing with the temperature probe on my dmm then and see if it reads differently to software.. If they're too hot to keep your hand on comfortably, yes I'd try to increase cooling some. Those drives aren't even relatively very hot running so there may be some airflow issues in the whole chassis causing this? I thot that myself... but moving from a fairly roomy case with no cooling, to a brand new case with 120mm fans front and back, hasn't made much difference.. (maybe between 2 and 4C max). The front fan is directly infront of the drive cage. Regards, Chris ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#18
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On Thu, 29 Sep 2005 22:31:35 -0400, "Skeleton Man"
wrote: You cannot determine drive temp with only the software temp reading, because it is only the temp of the chip taking it, a chip isolated for each and every other chip. The PCB insulates more than conducting heat (including traces) so the temp report can only be used in conjunction with other means. I'll measure the drive casing with the temperature probe on my dmm then and see if it reads differently to software.. That will provide a useful, 2nd temp, then all you'd need for a more comprehensive assessment is the temp of all the other chips, too. The reported HDD temp is best seen as a gauge of relative change. If they're too hot to keep your hand on comfortably, yes I'd try to increase cooling some. Those drives aren't even relatively very hot running so there may be some airflow issues in the whole chassis causing this? I thot that myself... but moving from a fairly roomy case with no cooling, to a brand new case with 120mm fans front and back, hasn't made much difference.. (maybe between 2 and 4C max). The front fan is directly infront of the drive cage. Does this new case have mostly unobstructed intake and exhaust area, including low restriction from the case front bezel? Fans are only so good as the case allows them to be. A rack behind a 120mm fan, drives having fair amount of space between them, shouldn't feel hot. However one problem with the bays that stand back from fan some, AND using 120mm fan is that far lower percentage of flow goes between the drives, most flows around them instead. IMO, the optimal arrangement for rack cooling is a 92mm fan with an extended rack, such that the vast majority of fan exhaust must travel between the drives to get out through the rack into the rest of the chassis (save for a trivial amount escaping through the rack mounting holes). Ironically and unfortunately, few systems use such a setup so you'd have to DIY. |
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