AMD CPU speculation... and expert conjecture

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juanrga

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I didn't write "obviously rubbish". I said are not the saviors that some pretend. Also the 3 billion in revenue that I mentioned is for K12/Zen and will start on 2016 not 2015.



I am not criticizing the concept. I am criticizing the poor execution.



It would be weird if a new architecture for 2016 couldn't improve over the ancient Piledriver IPC. AMD cannot survive to another Bulldozer fiasco.

My point was that the new Zen architecture will be between Ivy Bridge and Haswell on performance, and very far from Skylake.

Steamroller: 8 FLOP per core
Excavator: 8 FLOP per core
Zen: 16 FLOP per core (guess)
Skylake: 64 FLOP per core

I guess AMD will try to get a relatively small efficient core for the semicustom division and then will use again the "moar cores" to try to caught Intel on desktop/HEDT. I think that is the reason why we hear weird rumors about 20-core FX chips for desktop.
 

jdwii

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^^^ It's irrelevant to the original conversation which is simply Amd needs to improve their GCN design a bit more to stay competitive if both manufacturers were using the same node how would things look?(since nvidia can simply use a lower node as well). The 290X using the same amount of power as the 690 is just crazy i couldn't care less about the excuses. Nothing is to support my products i buy, if so i would be dissing the fx 8350 more.

So again stop claiming the reason why people put down something is over fanboyism or whatever else you can think of its nothing more then what you would expect from professional reviewers.

Not to say Nvidiots don't exist but i'm not one of them i want Amd to be better in terms of efficiency but what i want and what is reality are two different things back in 2-3 years ago i was putting Nvidia down left and right over them jacking up prices and this can be found from my previous posts.

I have no idea why i'm getting attacked if anything i find it funny. I will never stop claiming Nvidia or Intel or Amd is better than one another as long as i state it with facts which are not even subjective.

Now my biggest mistake is expecting readers of this forum to look at the results and state a neutral opinion based on the evidence in front of them i have been defeated in that stance.
However i will continue to state this had nothing to do with the 970 vs anything since that is a newer design this is nothing more than rehashing my old results that the 770 uses less power while being just as fast as the 280X and also stating the 285 has caught up to the 680 series base GPU's from Nvidia in performance per watt something that isn't debatable since the results show just that in terms of benchmarks.
Now ask yourself if you were a engineer at Amd would you want to think the 285 beats Maxwell in efficiently or would you rather go with reality and make a better product? I sure would hope engineers at Amd know their product very well and want to make it better.


Now this is getting sad i hear comments from this user above who says things like the 7950 is beating a 680 over poor console ports, isthat really what we have now? Using the argument from small numbers to justify are claims? Again i use techpowerup for my evidence since it uses the majority over the small numbers to support my claims on what is better for GPU performance if for example one card is 50% better in BF4 does that make it better overall NO of course not.
It’s like claiming I won’t die over smoking since my grandpa smoked for 70 years and he is still alive even if the majority die sooner over smoking.

 


The results you've put forward support your argument, however I read through *a lot* of reviews when the 285 came out and the efficiency results varied wildly. I'm going to have to dig through all the launch reviews and post a link when I have more time, as several reviews found in their own tests that the 285 was in fact *more efficient* than Kepler. There is no denying it isn't as efficient as Maxwell though, however I think some of the efficiency reviews maybe weren't all that fair- it is possible to skew results for one reason or another. Also I think it's worth noting that the card in the review you've linked is an OC card- and from what I've seen the efficiency of GCN plummets with higher clock speeds- it's at it's best efficiency wise around 900 mhz (as you maintain 90% of the performance of a 1ghz card, but save 25% on power).

I agree the 285 *wasn't* the card we would have liked, I recently purchased a 280 instead due to the wider memory bus and larger frame buffer (and lack of compelling new features on the 285, the only one that tempted me was TrueAudio but that has virtually no support in games so far so little point). The thing is though from an efficiency standpoint it was actually quite good from the reviews I've read. I actually think a large part of AMD's problem with efficiency isn't the fundamental design of the cores or GCN, but rather the physical layout of the GPU and the design of the PCB's and such.

As for the concept of "nVidia can 'just' shrink their die as well" you are missing the point a bit here. AMD developed HBM so they have exclusive usage of it for a while. AMD have put the time in the draw up a 20nm gpu (nVidia decided not to go with this node). nVidia decided to put their engineering resources into refining their uArch on 28nm (and a large part of Maxwell's efficiency is down to a very good physical chip design as much as some 'special sauce' going on with the uArch in general imo). That means for the next round of GPU's the two companies will be competitive (with AMD having a small lead based on the leaks in performance and efficiency). After that? Well AMD will have more experience with HBM, they will also have time to refine their GPU to improve efficiency, whilst nVidia get to add HBM + die shrink. These things *aren't* insignificant undertakings so I don't see the problem. The end result is for the next couple of generations AMD and nVidia are going to be pretty even against each other- which is exactly what we need them to be as it keeps prices down. I mean I spent £140 for my R9 280 and got 3 free games with it... I can't remember ever getting so much for my money in the past!
 

jdwii

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Also to state efficiency isn't the number 1 most important metric for a CPU/GPU engineer in 2014/15 means you know nothing when it comes to the future.

Again for the 110th time efficiency is the most important thing for future designs from either Amd or Nvidia or Intel. To state otherwise is asinine. The harder it gets to shrink our fabrication process the more every transistor counts. The future is really going to show who the big boys are.
 

juanrga

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I have always maintained that consoles maintained AMD affloat, but nothing more. We agree.

I always criticized AMD myopia regarding mobile. When all the signs pointed to a collapse of the PC market, companies as Intel and Nvidia started to pivot towards mobile, whereas AMD remained stagnant and now the collapse of the PC market is directly affecting the finances. We agree.

I always criticized AMD ridiculous server strategy, starting by that nonsense called Bulldozer arch. Some time ago I posted here my analysis of why CMT was a very bad idea. I always criticized AMD myopia regarding ARM. I mentioned that their K12 was late and that their launch of Seattle was an attempt to have something to compete before K12 is ready. I did applaud their plans to replace jaguar servers by Seattle servers, because jaguar servers are uncompetitive (slower and power hungry).

What I never imagined is that AMD would try to sell Piledriver Opterons again, but renamed as Warsaw. What I never imagined is that their execution of Seattle plans would be so poor that the initially announced 16-core would be canceled months after being announced. The idea behind Seattle and the use of standard Cortex A57 core was to be the first to hit the market before others would release custom cores. Well APM is already selling its custom X-Gene 1 and we have still no word of the promised 8-core Seattle. It seems AMD has canceled this as well, because who will buy it when better alternatives are available? No surprise that several companies are already selling X-Gene servers.

I never imagined that near one year after announcing Berlin, the APU is nowhere. It sounds as another canceled product, probably because nobody would purchase a HSA server, when the HSA spec is not finished and there is no software to run on the server.

We agree.

Mantle was a good idea. Initially AMD promised us support for linux and lots of games. Now Mantle is windows only stuff and, unsurprisingly, the dozens of promised games are nowhere. Mantle would have a future if was multiplatform, but being limited to windows, what developer will use it when DX12 was ready?

We agree.

We disagree about advertisement on TV. I think real problems are the poor execution, the silly management decisions, and the more than evident lack of a long term plan.

I agree with you on that the management has been miope to stuff such as smarphones, regarding management decisions it looks as if they are specialist on either taking always the poor decision possible or taking the good decision too late.
 

con635

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The 770 being just as fast as 280x while using a little less watts means a hell of a lot less than £100 more it costs and keplers poorer performance than gcn in newer aaa games. Kepler looks so dated now there was a conspiracy theory that nv was gimping it via drivers to make maxwell look better (completely debunked of course). Anyone who bought 7970ghz *years ago must be laughing, what a buy.
@cdrkf Yes we too got an msi 280 for £140 with 3 games recently for my younger brother, games he was going to buy anyway I might add, what a deal, amd have this price point well sewn up.

 

etayorius

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I been thinking about this too... if so, i hope it`s Samsung the one who buys them.
 

Cazalan

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Anyone not drinking the coolaid saw this coming from miles away. X-Gene had beta hardware in FPGAs the minute ARMv8 was announced.

http://armdevices.net/2011/11/09/applied-micro-x-gene-armv8-64-bit-server-on-chip-shown-on-fpga/

Several mentioned it here that AMD was coming late to the ARM party. Some hyped it way more than others. It still fits with their semi-custom strategy and ultimately I don't think it cost them a whole lot. Much of the work they needed to do anyway. Just another item to add to the check list.

 

juanrga

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I suppose Feldman abandoning AMD server division would be a sign something was going wrong. My mistake.
 

juanrga

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I have a strong feeling that AMD is preparing itself to split into two different companies; the current computing and graphics business group would give one company and the enterprise, embedded, and semi-custom business group would give another company.
 

colinp

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What is more likely is a private equity takeover. AMD will then be sliced and diced, with IP being sold off to the highest bidders and any remaining business units "streamlined" for a re - floatation.

On the other hand we'll probably be here in 12 months having exactly the same discussion.
 


If we count GPUs on the CPU die, then Intel owns like 60% of the GPU market.

Just saying, your metric makes AMD look even worse by comparison.
 


Heres the problem: Who would WANT AMD's assets? Lets face it, the X86 license simply isn't attractive due to smartphones/ARM. Especially when you factor in the cost of competing with Intel and making their own proprietary X86 design. Much simpler and profitable to just license an ARM (or even MIPS) design. The GPU unit would be a hard sell as well, simply because other manufactures are now competitive in mobile. Same basic idea here: Simpler to license a design then build one and compete against NVIDIA.

So here's my question: With Samsung being dominant on ARM/Mobile, why would they WANT any part of AMD?
 
One thing to point out when comparing GPUs: the amount of VRAM is becoming a major bottleneck. For example, the 770 GTX 2GB version is faring a lot worse then the 4GB variants. So when comparing cards, it might be worth specifying the amount of VRAM we're talking as well. Because right now, 770 GTX 2GB < 285x < 770 GTX 4GB.
 

etayorius

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I really hope AMD is still around for a while, i really don`t want to see them go... but they been acting in the most Idiotic ways for the last 4 years... if they Split or Die, it will fall under own Doing.

 

juanrga

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He says that the ARM hardware available then (he explicitly mentions an ancient 32 bit Cortex A9 core) was not suitable for servers (which was true), but that ARM would release something for 2013--2014 and adds "When there is a good ARM part we will look at it."

The Cortex A53--A57 cores available today are the minimum for a half decent microserver. Not only Feldman was one of the visionaries on ARM servers but he correctly predicted that advantages of ARM big.LITTLE on HPC

http://www.hpcwire.com/2012/04/18/a_new_breed_of_heterogeneous_computing/

I like his vision for heterogeneous compute. It is the second in my favorite list.
 

juanrga

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+1
 

anxiousinfusion

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I don't think another entity could acquire their x86 division even if they wanted. Isn't that license non-transferable through mergers/buyouts/IP sell offs?
 

colinp

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I'm not sure that if that were the case, whether it would apply to PE owning AMD. I mean, AMD is already owned by a mix of other companies (pension funds and the like ) and casual investors.
 
Having followed AMD back from the 386 days, I can tell you they've been here before. They're one of those companies that perpetually have a bad time, get a little win, then go down again. What they are if anything is resilient however, and also a necessity for Intel.

If they did ever go down I could see Intel being forced to make big changes (eg open up their advanced fabs for everyone) as otherwise they'll have sole domination of to many markets (ok not phones, but the whole pc platform which is still very important for business especially, along with the majority of the server market).

As for an AMD buyout, I think they do have some valuable ip, Samsung have to licence their gpu tech for example so gcn would be tempting to them. Also I think the hsa stuff is potentially very important long term and amd are so far furthest ahead. Thing is tough any suitor probably wouldn't be interested in running the company as is, so they would allow it to really collapse and then get the bits they want as cheaply as possible.
 

Cazalan

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Or they're just trimming the fat. I'm guessing the SeaMicro deal still hasn't earned them a penny considering what they paid for it.
 

Cazalan

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GPU patents/IP, but that wouldn't be worth the price of a full buy out. They could just work out a license with how desperate AMD is right now.
 
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