in defense of the 1900 series, mine runs fine @ default fan settings
Hey Hey no defending here
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in defense of the 1900 series, mine runs fine @ default fan settings
I am a BSEE as well in aerospace electronics and almost finished with my MSEE.
Try again...all of that 110W is dissipated as heat. That is convervation of energy. Otherwise if we could find a way to store power in the form of computations...you would be one rich bastard by now...trillions of dollars I tell you. Whether or not power does something of value is non-factor.
100c is absurd, no matter how you look at it.
The processor may well be able to run at that temp, what concerns me is the memory. Overheating memory can frequently lead to small errors that become bigger with time, until you get crashes or artifacts in game...
It also does not happen overnight. You might be able to run with those temps for quite some time before an error occurs, a little glitch here or there, an artifact that disappears.
It's a proven fact heat degrades chips over time.
Anyway, if you read the forums on Guru3d on how to use the auto fan functions, you can set it so it spins up and down according to temperature. I do this and below 55% or so it is very unobtrusive. By setting it so 80c results in 100% fan rpms the fan has never had to go over 62%. In this case I think it's set that way because they know how much noisy fans annoy people, but they could have optimized their formula more to improve the lifespan of their cards.
The thing is these cards have very short development cycles, and the #1 priority is performance, not card longetivity, or noise/cooling optimization.
What I want to know is if I have the GPU fan cranked up to control the card's temp, does that help keep my computer room cooler?
I have a gateway 24" LCD, that card, a Mac Mini running through a 19" CRT, A 6" green phosphor Compaq portable II - You can tell the difference between WoW and Hellgate by the temp in my room - but will the room temp stay lower if I keep the card temp lower? or would the heat be the same?
I'd listen to the engineer on this one, all of that energy is released as heat, as a result of "moving molecules around".
I find it hard to believe that the manufacturers don't take this into account.
The good news is that carbon nanotube solutions will make single slot solutions 5-10x as effective as the best dual slot solutions today. OCZ is pretty far along on this concept with its Hydrojet, now the concept has to be applied to single slot graphics card coolers.
No, the heat leaving your case is EXACTLY the same regardless of what the speed of the fans inside it are running. If the internals are producing 300w of heat, it's still 300 watts of heat, air moving around might cool better or worse due to speeds, but power output is the same.
Could you please provide me with the link to where you found this tidbit of info on a 10C rise in temp halving the life of silicon today.
Doubles with.... what? A doubling in absolute temperature?The 10°C = halved life would seem to result from the chemistry "rule of thumb" that a chemical reaction rate coefficient doubles with temperature.
The 10°C = halved life would seem to result from the chemistry "rule of thumb" that a chemical reaction rate coefficient doubles with temperature. The reaction rate coefficient usually rises exponentially with temperature following the Arrhenius law expression but in lieu of actual data, the "rule of thumb" is actually a reasonable estimate for rough calculations.
Treating the thermally induced degradation of silicon is a chemical reaction, I could see how this generalization gets tossed around in this context.
However, keep in mind that if the rate coefficient at reference temperature is very very small to begin, it will probably still be small enough to not matter at the elevated temperature within the practical operating service life.
Disclaimer: I am a MS Chem Eng and not an EE. I am also not defending that the original reference to this expression was necessarily appropriate.
No, a tiny fraction, however small, is translated into work of some kind. Even digital information takes some power to create it/move it around.
Doubles with.... what? A doubling in absolute temperature?
If that's the case, to halve its life, a 50C piece of silicon would have to be raised to over 370C.
Where does the "10C" come from?
Doubles with.... what? A doubling in absolute temperature?
If that's the case, to halve its life, a 50C piece of silicon would have to be raised to over 370C.
Where does the "10C" come from?
Care to elaborate on this? (hint, it's a trap).
The poster you quoted was theorizing as to where the "10°C = halved life" figure that's been brought up in many previous posts comes from... that in Chemistry it's used as a way to estimate change in reaction rates.
So going from 50C to 60C doubles the rate at which a reaction occurs and going from 60C to 70C doubles it again.
The problem with using this rule of thumb is that while it's a good rule of thumb for chemical reactions... electron migration isn't a chemical reaction Although the person you quoted never claimed it was... he was just theorizing as to where people were getting the 10C = halved figure from.
As for my qualifications... I spent 3 years working on a Chem Eng degree before getting my CSE degree.
Excuse me for not reading this whole thread but their response is probably only relevant if you leave the card at stock speeds and don't overclock. EVGA may be overclocker friendly in their return policy but their cards (and fan speed recommendations) only apply to stock speeds. I don't see what's so absurd about the response.
No Manufacturer wouldn't offer a lifetime warantee on a design that wasn't rigorously tested.
No Manufacturer wouldn't offer a lifetime warantee on a design that wasn't rigorously tested. If their was a design problem with this card, you would have hundreds of reports of failures instead of the handful that will always occur in any mass produced product.
This thread has so many retarded posts on so many different levels by so many people.
That sounds really nice. Key word sounds, if you've ever worked in the real world on anything from airplanes to key chains you know that products get released early because some one is yelling at them and that they don't get tested enough before they get out the door. Some person answering the phones or e-mails is not a thermal engineer, he is usally getting paid 6$ an hour to read a prompt. Bridgestone release tires that killed a bunch of people before they admitted there was a problem. That was a huge company, which was dealing with a product that could (and did) kill people. We all like to believe that the designer is some god who knows everything, but they're not. That's like saying well Windows Vista was designed and throughly tested before it was released. Also read the fine print on most "lifetime warantee"s. Most of them say simply that it will be free from manufacturing defects, not that it will last forever.
and the proof is the lack of massive returns thus far
You don't "accidentally" set the fan to run at 29% up to 100C and train your support people to tell everyone that is correct.
We are talking about a temperature issue here. You can run this card at 100C but you sacrafice the life expectancy. We WILL have to wait to see how much it impacts that. In a year when a sigma of these cards have failed only then can we raise consern?
Your right, and every keeps saying the fan is louder than hell right? So how much of a stretch is it to say this was a decision that was made by (or highly influenced by)marketing. The way to make a cheaper card is to keep reusing designs from the past and keep trying to push them farther and farther. There comes a point where it's pushed too far. Is this one of those places? Time wil tell.
The problem with your statements is this is EVGA, and they have a track record of tweaking reference design for factory overclocking experience. That means they have experience is adjusting fan speed, etc. and will back that experience with the warranty. They are not stupid enough to intentionally lower the fan speed just to make a marketing guy happy.
The problem with using this rule of thumb is that while it's a good rule of thumb for chemical reactions... electron migration isn't a chemical reaction
. . .ps. Your praise of EVGA made me think of the movie 300. "This is not MADNESS, this is EVGAAAHHHH"
Your right, and every keeps saying the fan is louder than hell right? So how much of a stretch is it to say this was a decision that was made by (or highly influenced by)marketing.
When I first got my 8800GT SSC I noticed it ran hot, and I also saw other posts complaining about this as well when doing some research before buying the card. I even saw one post of a guy saying his fan speed wouldn't change on load, thinking it was broke so he RMAed it. Probably like everyone else he didn't wait for it to reach 100c+ before letting the fan kick in.
I've never ran it at 29% speed, right off the bat I set it to 50%, then from there 60%, artifacted once in Crysis (though after days of playing this never happened, must of been change in room temps, parents had the heat at full blast that night). I then set it to 70% just to be safe, also this is the level of noise I can handle as I don't much hear a huge difference in noise, mostly what I'm use to from my older computers. Anything above this level though is too loud for me.
At first, it would idle at 50+ and reach like 70-80+, no exact numbers as I've forgot. However now after putting a side panel fan blowing on the card and took out all the empty PCI covers and put a fan there exhausting out the back and my fan speed at 70% my temps have dropped to 45c idle not seen over 68c load (from what I've seen while playing Crysis for 2+ hours).
For the people that are having overheating problems are you playing Crysis? I have a friend who bought a BFG version, he can play any other games no problem but for some reason even at stock settings (the 600 core stock ones) he is still artifacting and locking up in Crysis at random. Sometimes hours of playing then quit and play again for 5-10 mins and then a lock up. Must be a Driver + Crysis programming issue/conflict.
For now I'm comfortable with 45c idle 68-70c load I guess, I would be even more comfortable if it was below 60c. Personally 100c+ is kinda scary for me, however the cards may be able to handle that heat so I may be worrying for no reason.