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[VC] Exclusive AMD Radeon R9 295X2 Preview - Page 17  

post #161 of 188
Quote:
Originally Posted by bencher View Post

Do you even know what an outlier is?

Yes.

Where power and heat are concerned, LINPACK is an outlier amongst programs I can run on a CPU, yet every CPU that can run it is expected to be able to run it flawlessly for the entire service life of the part, if need be. It's utterly inexcusable for a CPU, when run within stock specifications, to fail prematurely while doing anything it capable of doing, or to not run at it's advertised base speed on the cooler it comes with. Same goes for the other hardware rated to support them.

I don't hold GPUs to lesser standards. When I talk about peak loads and peak temperatures, I'm not going to run 3DMark or Battlefield 4 for exactly the same reasons I wouldn't use Handbrake or 7-zip loads to figure out how much cooling I needed for my CPU. I'm going to use the most stressful, most demanding, most power hungry, hottest running, program I can possibly find.

I do not use my GPUs only for games, and some other applications that do useful work are often more stressful. Additionally, I cannot rule out further optimizations making them even more so. It's also phenomenally time consuming to test the stability of something by running that something as I would need to run the test an order of magnitude longer than the task typically takes to have reasonable confidence in it succeeding without error every time.

GPU manufacturers are heavily pushing GPGPU, yet they still engineer their hardware like they were toys, not serious tools. The focus is on producing the best numbers in popular gaming tests, often in overly ideal conditions. AMD advertises a peak clock of 1GHz on the 290X, but makes no mention of the minimum clocks the card will throttle down to. They cap fan automatic fan speeds to control noise, and implement a 250w stock TDP limit, throttling anything that goes over this, so software that doesn't really push the card can present the best possible numbers. They don't mention that it's impossible to extract full theoretical performance out of many other applications, with out of the box settings, because the card will heavily throttle. They have equipped the 290X with a 250w limit, and cooler that is only tolerably loud within that limit, but the cards at full advertised clocks are often capable of drawing 350w or more in the right scenarios. Things have been this way since the 6000 series for AMD and since the GTX 500 series for NVIDIA (though at least NVIDIA advertises a base clock and turbos up from there, rather than only advertising a turbo clock that is far from a certainty).

In the end, I am quite certain that this 295X2, as configured, will do just fine in most games, while remaining fairly quiet, cool, and close to peak clocks, under such loads. However, I'm not confident it will remain so doing some of the things I use my GPUs for, and I am quite skeptical that I'd be able to validate the full stock clocks to my standards of stability.

The whole approach AMD (and to a less extent NVIDIA) has taken with their GPUs, where they find it more acceptable to reduce the performance of outlier applications that will actually stress the hardware, instead of increasing the quality of their parts, comes off as backwards and deceptive.
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post #163 of 188
The cooler looks just like the 690/Titan Z cooler, with an extra CLC attached.
Edited by WarpPrism - 4/7/14 at 11:23pm
post #164 of 188
Quote:
Originally Posted by WarpPrism View Post

The cooler looks just like the 690/Titan Z cooler, with an extra CLC attached.

Im not seeing what you're seeing obviously
 
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post #165 of 188
First review out....

LINK
    
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post #167 of 188
Quote:
The Radeon R9 295×2 launches April 21st for $1499 and should be available via leading online retailers.

HAHAHAHA!

HAHAHAHAHAHA!

omg so fan.

such price

great laughs
post #168 of 188
 
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post #169 of 188
Quote:
Originally Posted by Sgt Bilko View Post

Just had a read, very interesting.....

They said its lower than 60C on heavy load
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post #170 of 188
So the price for this is $1499? Probably a good 20% more expensive than it should be. I don't even wanna think about 20nm (or whatever comes next) GPU pricing.
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