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[seekingalpha] Advanced Micro Devices Is Moving Away From 20nm, Rejoice Or Despair? - Page 6

post #51 of 73
The issue was especially bad with the reference coolers, but AMD has never been as good as the competition when it comes to energy efficiency. 28nm Maxwell for example is about 50% better than Hawaii at mining in terms of hashes/Watt. 750Tis are about as good as Bonaire in gaming and run at nearly half the power. Solid state electronics are excellent at transforming electrical energy into thermal so energy use is a good indicator of heat production.
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post #52 of 73
Quote:
Originally Posted by geoxile View Post

Hawaii in itself still outputs more heat than its predecessors. But the reference coolers made it look exceptionally bad.

Sure the VRM's get hot, at least hotter than last gen. The core is rated at 94c but that doesn't really mean its a hotter chip, the ref cooling is a joke plain and simple.
post #53 of 73
Quote:
Originally Posted by CynicalUnicorn View Post

The issue was especially bad with the reference coolers, but AMD has never been as good as the competition when it comes to energy efficiency. 28nm Maxwell for example is about 50% better than Hawaii at mining in terms of hashes/Watt. 750Tis are about as good as Bonaire in gaming and run at nearly half the power. Solid state electronics are excellent at transforming electrical energy into thermal so energy use is a good indicator of heat production.

Comparing a mid range Maxwell a brand new architecture to Hawaii is a bad comparison. Infact before Kepler Nvidia was not really energy efficient at all.
post #54 of 73
Why is it bad to compare the two? It's hashes per Watt. Both of those should scale roughly linearly within the same architecture. Kx/ky = x/y, right? For two values k (Hawaii or GCN 1.1 and Maxwell or GM107) it's a good comparison.
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post #55 of 73
Quote:
Originally Posted by geoxile View Post

Hawaii in itself still outputs more heat than its predecessors. But the reference coolers made it look exceptionally bad.
The die is bigger that Tahiti and extremely dense compared to GK110 no wonder it runs hotter. The cooler however is what really brings out this problem.
Quote:
Originally Posted by CynicalUnicorn View Post

The issue was especially bad with the reference coolers, but AMD has never been as good as the competition when it comes to energy efficiency. 28nm Maxwell for example is about 50% better than Hawaii at mining in terms of hashes/Watt. 750Tis are about as good as Bonaire in gaming and run at nearly half the power. Solid state electronics are excellent at transforming electrical energy into thermal so energy use is a good indicator of heat production.
AMD has only been around for 2 generations (3 if you count the hawaii refresh) if we talk both AMD and ATI then the 5850 and 5870 completely tear apart the fermi cards in performance/watt
http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_480_Fermi/33.html

We can't really say anything AMD is just as efficient this generation as Nvidia has been with Kepler that pretty much fact comparing the 7790. All AMD has to do is gimp DP compute capabilities just like Nvidia did and do that so that there is almost nothing left just like Nvidia did.

Volcanic islands are likely to bring a 30/40% performance gain at the same power consumption juging from the early Mullins numbers. The 750 Ti scores 35% higher in performance per watt or a factor 1.35 normalized to a 7790. I personally think that AMD's card will be as efficient if they were on 28nm perhaps a little more efficient due to the more matured process just like we have seen with the 280x rehash.
Edited by maarten12100 - 3/1/14 at 9:58am
post #56 of 73
Quote:
Originally Posted by llythrus View Post

There are already 290x's with a 50% markup price

So? AMD didn't mark up those prices. And 290x's aren't ASICs. They're GPUs that happened to be good at running the scripts that mining uses.
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post #57 of 73
Quote:
Originally Posted by Tsumi View Post

So? AMD didn't mark up those prices. And 290x's aren't ASICs. They're GPUs that happened to be good at running the scripts that mining uses.
A GPU is a piece of sillicon that you can't program to be internally different so yes it is in fact an ASIC it is optimized per component to execute just one or a couple simple tasks.
There is a difference you have ASICs that are focused on one job and ASICs that can still do a certain job fairly well and GPUs are the second of those two.
post #58 of 73
Is TSMC 20nm really the next best step for high-performance GPU's?



Since various companies have said that 20nm is more suited for lower-power designs (like SoC designs), it seems like AMD and Nvidia might be waiting for TSMC 16nm FinFET (which is actually their 20nm, just with FinFETs.)
post #59 of 73
Quote:
Originally Posted by NaroonGTX View Post

Is TSMC 20nm really the next best step for high-performance GPU's?



Since various companies have said that 20nm is more suited for lower-power designs (like SoC designs), it seems like AMD and Nvidia might be waiting for TSMC 16nm FinFET (which is actually their 20nm, just with FinFETs.)

In due time I think it should be possible for their 20nm HKMG be configured for higher performance designs, which is probably why AMD and Nvidia are waiting until late 2014.
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post #60 of 73
Waiting on 20nm graphics cards from Nvidia and AMD? Don’t bother.

http://techsoda.com/no-20nm-graphics-amd-nvidia/1/

http://www.overclock.net/t/1474118/techsoda-waiting-on-20nm-graphics-cards-from-nvidia-and-amd-don-t-bother
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Overclock.net › Forums › Industry News › Rumors and Unconfirmed Articles › [seekingalpha] Advanced Micro Devices Is Moving Away From 20nm, Rejoice Or Despair?