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Old 03-30-10, 03:02 PM   #133
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Default Re: Man, it is sooo hot.

Quote:
Originally Posted by Xion X2 View Post
Yes, but 100% fan speed doesn't reduce the temps lower than 99C?
Well, if you don't let it get that hot in the first place, then you wouldn't need to bring it down
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Old 03-30-10, 03:08 PM   #134
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Default Re: Man, it is sooo hot.

Quote:
Originally Posted by Xion X2 View Post
Yes, but 100% fan speed doesn't reduce the temps lower than 99C?
You don't know how long he tested, if it cooled down within a minute or 10 or something? Yes I remember him saying that it was an open test rig, wasn't it? But also in that test he didn't use any 120mm fans to the heatpipe or the "grill", like I will be using on mine. I personally am not worried about temps at all, and I am all "air" guy this round, plus I can always return the card within 2 weeks if for some reason I couldn't handle the temps and get them to decent levels but I think it will be fine.
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Old 03-30-10, 05:53 PM   #135
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Default Re: Man, it is sooo hot.

Did you guys even read his comment? His own words:

Quote:
Originally Posted by MikeC
Once it gets hot, it stays hot
http://www.nvnews.net/vbulletin/show...4&postcount=83

To me that's pretty clear, but decipher that in whatever way you like. I took it to mean just the way it sounds in that even at 100% fan speed the temps hardly move.

The way I also read his post is that he didn't just set the fan to 100% and the temps declined from 105 - 99C but he set the fan at increments of 100% until he could get the temps down to 99c.

Quote:
Originally Posted by MikeC
75% - 105c
80% - 105c
85% - 105c
90% - 102c
95% - 99c
100% - 99c
To me, that does not look like the temps are dropping over a period of time but that they're remaining constant based on whatever fan speed he was setting. In fact, to me that's clear when the temps don't budge in increasing the fan speed from 95 - 100% as they stay at 99C. But if he reads this series of posts then maybe he can clear it up for us.

I understand that you guys want this card to be good, but there comes a point where you have to concede certain faults. You'd be hard pressed to find many, if any, reviews that will say that this card doesn't run unusually hot. This isn't to say that no one should buy a 480, but it's only fair that potential buyers know what it is that they might be dealing with. That's why everyone is talking about it.
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Old 03-30-10, 06:03 PM   #136
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Default Re: Man, it is sooo hot.

Quote:
Originally Posted by slaWter View Post
huh, from the same post:



I also think Mike let the chip get hot first and then started to increase the fan speed. He started with a fan speed manually set to 70% (also same post). Next up 75%, 80%, ..., 100%.

That's how I understood it after Mike posted that.
And that's exactly what I said. What am I missing here?

I didn't say that that's not what he did. I just found it a little alarming that increasing the fan speed to 100% does not help the card to drop below 99C as was evident from his testing when the fan speed increased from 95-100% but the temps remained the same. Normally when you increase the fan speed on a card to 100% you will see the temps drop down to something much more reasonable than 99c. After all, it can't go must faster, can it?
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Old 03-30-10, 06:08 PM   #137
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Default Re: Man, it is sooo hot.

Good grief to hot for me.
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Old 03-30-10, 06:25 PM   #138
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Default Re: Man, it is sooo hot.

Why couldn't they use normal, solid colors in that chart? Geebus.
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Old 03-30-10, 06:32 PM   #139
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Default Re: Man, it is sooo hot.

Quote:
Originally Posted by slaWter View Post
Nothing then. I just saw your post with agentkay's quote and I guess I misunderstood it.

But I never really experienced that last part myself. In my experience, and this goes for CPUs and GPUs, the automatic fan control will try to keep the fan speed as low as possible for a given temperature. It'll start spinning up to keep the temps in check but even with maxed out fan speeds it can't bring the temps down anymore. It'll keep them steady on a high level.

I guess what's why it was important for me to point out Mike's manual fan speed control again


The faster the circulated air off the GPU/heatsink, the cooler it will get. This is pretty common knowledge, I think.

As an example, back when I had my 4870s guys were complaining about them idling around 75-80C which, admittedly, was nuts. So lots of us began to increase the idle fan speed with a custom profile, and it would keep the card idling around 45c. Now granted this is furmark we're talking about which is a far cry from idle stress on a GPU, but the same principle usually applies, from my experience.

In every case I have seen--even with my R600 when I had it which also ran really hot--increasing fan speed usually knocks the temps down quite a bit. The card will sound like a hair dryer on steroids, but it usually works.

That's why I found Mike's tests a little alarming.
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Old 03-30-10, 06:39 PM   #140
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Default Re: Man, it is sooo hot.

Quote:
Originally Posted by slaWter View Post
huh, from the same post:



I also think Mike let the chip get hot first and then started to increase the fan speed. He started with a fan speed manually set to 70% (also same post). Next up 75%, 80%, ..., 100%.

That's how I understood it after Mike posted that.
The biggest problem with the GTX 480 is not its temperature, but its power consumption. All of that power is being converted into heat and that heat has to go somewhere.
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Old 03-30-10, 06:42 PM   #141
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Default Re: Man, it is sooo hot.

Did any review run some CUDA with tempature/power figures? I was wondering if it was possible running some heavy CUDA stuff might get very Furmark like.
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Old 03-30-10, 06:42 PM   #142
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Default Re: Man, it is sooo hot.

I wonder if it is just not better keeping the temperature hot all the time based on minimizing thermal transients. For example constanting or repeatedly going from 45c to 95c rapidly and back may cause more harm then just keeping the GPU relatively the same temperature, let say 80-95. Thermal transients can cause stress on the materials of the card due to unequal temperatures as the different materials heat and cool down at different rates making them expand or contract at different rates. For example solder joints. Not sure if even applicable on a video card but for bigger stuff this can cause allot of problems. I wonder if chips (large ones) have a heat up and cool down rate limits!

For me I keep the video card as cool as possible and have yet have a video card fail on me even if over volted and/or OC.
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Old 03-30-10, 08:06 PM   #143
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Default Re: Man, it is sooo hot.

I have no choice but to run the 2 480's I pre-ordered side by side on my ASUS P6T. Looks like I may have to bite the bullet and watercool my rig with a beefy radiator/pump that can handle 2x480GTX's and an overclocked i7 920 on the same loop.

No 470 GTX PhysX card for me or I'd probably melt my PC :P.

...I may be regretting my decision to skip the Radeon 5870 to wait for Fermi.
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Old 03-30-10, 08:18 PM   #144
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Default Re: Man, it is sooo hot.

Just cancel your preorder
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