The GPU Discussion thread!
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tolanri




Posts: 3589

PostPosted: Tue, 26th Apr 2016 18:40    Post subject:
Janz wrote:
whats spectacular about a new generation of amd cards is close as fast as a highend card of current gen nvidia one year after its release? right -> nothing. and the pricetag of 300bucks is just illusionary. 400+ it will be


Why the fuck would AMD sell their best Polaris 10 chip for $400? It's supposedly 232mm² die size chip. It'd be a ripoff to sell it for that much. I realize that it's new fab process and all, but still with such a small chip yields should be pretty good and even $300 is pretty high price tag, considering it's almost half a size of GTX 970 die size....(232mm² vs 398mm²) and it won't even have HBM1 - in which case it would make sense to have higher price to recoup R&D cost of HBM.
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MinderMast




Posts: 6172

PostPosted: Tue, 26th Apr 2016 18:44    Post subject:
In a recent interview Raja Koduri said people will be very pleased with the pricing of the upcoming GPU, so 300 or not they definitely intend to target a price/performance sweet-spot like they used to. Something around 400 doesn't sound so far fetched.

In any case, it's the competition that will be driving the price anyway.
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Breezer_




Posts: 10845
Location: Finland
PostPosted: Wed, 27th Apr 2016 10:01    Post subject:
If they release near 980Ti performance for 300 dollars, they absolutely will destroy their own sales, Fury cards will be pretty much useless after that, no one will buy those, doesnt make any sense, you can always keep dreaming guys. Also if it would be somehow 300 dollars, that would translate like to 499 euros in here, absolutely retarded prices in here Finland lately -.-.
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inz




Posts: 11914

PostPosted: Wed, 27th Apr 2016 12:55    Post subject:
Breezer_ wrote:
If they release near 980Ti performance for 300 dollars, they absolutely will destroy their own sales, Fury cards will be pretty much useless after that, no one will buy those, doesnt make any sense, you can always keep dreaming guys. Also if it would be somehow 300 dollars, that would translate like to 499 euros in here, absolutely retarded prices in here Finland lately -.-.


Naw let's make it 539€ at least, but hey, here's a free code for The Division! Cool Face


I might just order from Germany again, even the 970 is still what, 400€ here?
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DV2




Posts: 5238

PostPosted: Wed, 27th Apr 2016 13:24    Post subject:
A GIGABYTE G1 Gaming Edition 970GTX costs 359,95€ so far after the product list weekly updates where i live at (sometimes changes a tiny bit for good or bad).

The XTREME edition costs 423,95€ thou

I'm talking about RETAIL SHOPS though, NOT ONLINE BUYING.


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tolanri




Posts: 3589

PostPosted: Wed, 27th Apr 2016 15:24    Post subject:
I think P10 will be similar to 390X overall, which is very close to 980Ti in DX12 currently. P10 will be just half the TDP of 390X. Perhaps if FinFET 14nm turns out to be good for overclockability it will make it closer to 980Ti non-OC performance in DX11, something R9 390(X) would be capable too if it was as good for overclocking as Maxwell.

This is pretty much what I expect Raja meant by sweetspot for mainstream. 390X (which launched for $429) level performance for $250-$300 which they can do due to such a small die size. This combined with fact it's very efficient makes for a really good card for the masses.


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Stige




Posts: 3548
Location: Finland
PostPosted: Wed, 27th Apr 2016 15:52    Post subject:
What makes you say 390X doesn't overclock aswell as Nvidia does?
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tolanri




Posts: 3589

PostPosted: Wed, 27th Apr 2016 16:35    Post subject:
I don't have any "official" statistics of course. It's just my guess based on people experiences with overclocking - my card is really bad, so I searched how others' cards are overclocking and in my opinion, there just aren't that many people who can push it past 1100 on core without any artifacts.

And even if there are, if we compare Maxwell vs Grenada/Hawaii toe to toe, with Maxwell (GTX970) base clock being 1050MHz and Grenada (R9 390) base clock being 1000MHz, the percentual overclock of Maxwell is much higher even if we compare your overclock (1200MHz) versus some of the better overclockers of GTX970 (1500MHz or more).


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Breezer_




Posts: 10845
Location: Finland
PostPosted: Thu, 28th Apr 2016 07:52    Post subject:
Im not believing this 300 dollar 980ti performance AMD bullcrap at all (maybe in some AMD own benchmarks where they test out some AMD gaming evolved title), just doesnt make any sense. Polaris 10 is supposed to be "Mainstream" desktop card, and performance like 980Ti certainly aint mainstream, okay its 1 year old card, but its still absolutely best single card out there. Polaris 10 is still using GCN, dont think this new version will bring any radical performance bumps compared to previous iteration of GCN, its also made with that 14nm process which is pretty expensive (overclocking could be good). Also seeing AMD market share of GPU´s right now, i dont think they can afford selling 300 dollar cards that are as fast as their top end cards that costs half more right now Laughing.

If this is somehow true, i will buy 4 of them to my rig, would be nice to get 4x more power with same cash (what single Titan card has cost from Nvidia for long time now).
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AmpegV4




Posts: 6248

PostPosted: Thu, 28th Apr 2016 09:24    Post subject:
Your fogetting the whole $400 markup both these companies have add to the last couple of gens of cards for no reason. $300 is a feasible price just depends how much colluding the two companies do prior to release. AMD have been losing a lot of market share lately so maybe they can gain some back by competing and pricing these cards realisticly.

The prices they have been charging for rebranded cards last two or so years
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inz




Posts: 11914

PostPosted: Thu, 28th Apr 2016 13:02    Post subject:
Breezer_ wrote:
Im not believing this 300 dollar 980ti performance AMD bullcrap at all (maybe in some AMD own benchmarks where they test out some AMD gaming evolved title), just doesnt make any sense.


Could just be a bit of modified truth for marketing, ie. in some specific DX12 test the card'll do as well as the 980 Ti, but as we all know those synthetic benchmarks rarely translate into same performance in real game settings.

I very much doubt it too, it would be great if true, though - proper competition can only be a good thing for us pleb consumers. Razz
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donka




Posts: 197

PostPosted: Thu, 28th Apr 2016 18:43    Post subject:
Look guys, this is called "technological progress". Performance goes up, price stays at same or lower levels. This is the reason why we don't pay 300$ for 9800GTX levels of performance in 2016.
I fully expect AMD to deliver GTX 980ti like performance for 300-370$ with die shrink from 28nm to 14nm (which is huge btw). Raja Koduri promised "most revolutionary jump in performance so far. " and that's precisely what AMD needs to regain market share and stay afloat.
If they don't deliver they are as good as dead. Just look at AMD quarterly earnings, this company needs a serious offering for its customers.
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Bob Barnsen




Posts: 31974
Location: Germoney
PostPosted: Thu, 28th Apr 2016 20:25    Post subject:
Anyone with basic knowledge in economics should be able to realize, that it's more than idiotic to sell your product for that much under value.

Let's say cheapest 1080 Ti at release will cost ~650€.
Now let's assume AMD really developed suddenly such a good chip. Than even a price of 500-550€ would sell their cards like crazy.


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couleur
[Moderator] Janitor



Posts: 14407

PostPosted: Fri, 29th Apr 2016 23:48    Post subject:
What I expect from AMD is 15-25% more performance than 980ti with some healthy improvements in power consumption at about same price than 980ti.

Nothing revolutionary but a substantial evolution.


"Enlightenment is man's emergence from his self-imposed nonage. Nonage is the inability to use one's own understanding without another's guidance. This nonage is self-imposed if its cause lies not in lack of understanding but in indecision and lack of courage to use one's own mind without another's guidance. Dare to know! (Sapere aude.) "Have the courage to use your own understanding," is therefore the motto of the enlightenment."
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Janz




Posts: 14001

PostPosted: Sat, 30th Apr 2016 01:27    Post subject:
maybe next year with vega, but by that time a 980ti is fucking old
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Slizza




Posts: 2345
Location: Bulgaria
PostPosted: Sat, 30th Apr 2016 21:19    Post subject:
Will probably be after a GTX 1080 after launch providing they have not insanely raised prices again.
Doubt AMD will have anything worthwhile. They have not brought out a winning card in many years now Sad

I hooe Zen is good though. I might concier a AMD cpu of they can get the job done well.


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Sauronich




Posts: 2062

PostPosted: Sat, 30th Apr 2016 21:47    Post subject:
Assuming the rumors regarding Polaris and Pascal are true, aren't AMD going to have a giant PR disaster on their hands if they don't even try to compete with 1080/1080Ti in the high-end segment for like a year? Nvidia PR is going to destroy them by hammering the point that they have the best performing cards on the market.


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tolanri




Posts: 3589

PostPosted: Sat, 30th Apr 2016 22:06    Post subject:
They do have Pro Duo to compete... Doesn't make sense for them to come up with yet another product just yet before HBM2 is ready for mass production. Also those that keep buying high end cards like 980 Ti are likely going to wait for now until HBM 2 is going to be released (for 1080 Ti and AMD Vega) rather than upgrading right away to 1080 with GDDR5(X).

Anyway if they come up with really good card for midrange with great price/perf ratio it'll be far better than trying to have fastest single chip card in the world that <2.0% are going to buy.
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Stige




Posts: 3548
Location: Finland
PostPosted: Sun, 1st May 2016 10:47    Post subject:
But Pro Duo will be shit in majority of the cases cause of dual GPU garbage. I don't think it's valid for any competition at all, apart from benchmarks..
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ragnarus




Posts: 686
Location: Somewhere in Warsaw Pact
PostPosted: Sun, 1st May 2016 10:55    Post subject: ...
Well when Maxwell came out it was still quite a great jump. GTX 970 performance was almost equal to 780ti(and in next months driver updates made it even more even performance wise).

So what is realistic in my opinion is 1070 performance being more or less equal to 980ti and 1080 being at least 20% faster than 980ti. What I am concerned is the prices, cause somehow I dont believe 1070 will cost the same as 970 after launch which was like 300 dolars(?) I am afraid its going to be more like 400 or more for 1070.

Only hope is in MAD making something really good that will result in small price war in this 300-400 dolars segment... But I stopped holding my breath for MAD long time ago.

btw. If someone thinks MAD will come up with something really good and on par with i5 3570k he must be MAD just like them Smile


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Bob Barnsen




Posts: 31974
Location: Germoney
PostPosted: Sun, 1st May 2016 11:05    Post subject:
It's sad how over the last 5-6 years the prices for GPUs keep rising. Especially for a nice midrange card and if you want to max most graphic features.
For example the 560 Ti was ~220€ back then. Now those kind of cards start at 300€.
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Janz




Posts: 14001

PostPosted: Sun, 1st May 2016 16:11    Post subject:
Stige wrote:
But Pro Duo will be shit in majority of the cases cause of dual GPU garbage. I don't think it's valid for any competition at all, apart from benchmarks..


it is garbage, costs much more than 2 fury x and is slower
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Stige




Posts: 3548
Location: Finland
PostPosted: Sun, 1st May 2016 18:04    Post subject:
Janz wrote:
Stige wrote:
But Pro Duo will be shit in majority of the cases cause of dual GPU garbage. I don't think it's valid for any competition at all, apart from benchmarks..


it is garbage, costs much more than 2 fury x and is slower


But Fury X doesn't have the memory to do 4K, barely even 1440p.
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JBeckman
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PostPosted: Sun, 1st May 2016 18:17    Post subject:
Neither does the Pro Duo though, it's a Crossfire GPU on a single PCB so memory is still shared with 4 GB per GPU and only on DirectX 12 does the alternate scaling method allow for combining and using the full 8 GB unified. Smile
(And I don't think any game uses it as developers have to code it themselves now thus why e.g Gears of War remastered added multi-GPU support in a patch and Remedy won't do it at all for Quantum Break it seems.)
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Stige




Posts: 3548
Location: Finland
PostPosted: Sun, 1st May 2016 18:31    Post subject:
Proof about dual GPUs doing that? I doubt it.
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JBeckman
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PostPosted: Sun, 1st May 2016 18:36    Post subject:
I'm not sure how to best explain the tech behind it but each GPU has X amount of GB and data is always mirrored between them this is true both for normal SLI/Crossire and any custom PCB designs that stick multiple GPU's together. Smile

https://hardforum.com/threads/how-does-ram-work-on-a-dual-gpu-card.1336115/

Quote:

Current dual-gpu cards work by using load balancing between two gpu cores on a video card. The current designs on these dual-gpu cards don't have shared memory so each gpu core uses the required amount of vram per gpu core to render and load balance two scenes together seamlessly. Shared memory wouldn't actually give you any more ram, but rather better management of how the gpu core's could handle the provided available on board ram.

With a shared memory dual-gpu you could do more things with the same amount of on board ram essentially. For example card with 1GB shared vram and 1 gpu core could be using 256vram for one application while the other core was using 768vram for another application. Now with a 2x512MB even though the card has 1GB worth of total ram on board your restricted to 512MB per core so that same situation wouldn't be possible. Shared memory is more economical and flexible, but more complex to design which is likely the leading contributing factor as to why it isn't yet used in dual gpu cards. I hope that helps answer your question.



One of the main improvements of multi-GPU usage of DirectX 12 was to actually unify and have the entire memory bank available but it's up to the actual developers to code this for their games or game engines so it's not very common.
(Same with that other method that allows you to cross AMD and Nvidia GPU's together.)


EDIT: A longer article on this.
http://www.lazygamer.net/technology/pc-hardware/sli-and-crossfire-setups-getting-memory-stacking-soon/

Quote:

Mantle is the first graphics API to transcend this behaviour and allow that much-needed explicit control. For example, you could do split-frame rendering with each GPU ad its respective framebuffer handling 1/2 of the screen. In this way, the GPUs have extremely minimal information, allowing both GPUs to effectively behave as a single large/faster GPU with a correspondingly large pool of memory.



Quote:

Ultimately the point is that gamers believe that two 4GB cards can’t possibly give you the 8GB of useful memory. That may have been true for the last 25 years of PC gaming, but that’s not true with Mantle and its not true with the low overhead APIs that follow in Mantle’s footsteps.



(From AMD and for Mantle which was first with this support although I do not know if any Mantle games used it, Vulkan And DirectX 12 should also support this scaling method.)


Last edited by JBeckman on Sun, 1st May 2016 18:38; edited 1 time in total
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Slizza




Posts: 2345
Location: Bulgaria
PostPosted: Sun, 1st May 2016 18:37    Post subject:
Each chip accesses a 4gb portion of the ram dedicated to that chip. The other 4gb is a mirror.
Google it. It's been a long long standing issue with multi gpu.


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Nui
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PostPosted: Sun, 1st May 2016 18:37    Post subject:
That surely applies for 2 GPUs, but can you address both cores of a sandwiched dual gpu in dx12?

@ slizza
that long standing issue is addressed by dx12 and the like
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Stige




Posts: 3548
Location: Finland
PostPosted: Sun, 1st May 2016 18:40    Post subject:
Well that is just shitty then if even dual GPU cards have that issue.
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Slizza




Posts: 2345
Location: Bulgaria
PostPosted: Sun, 1st May 2016 18:41    Post subject:
Sorry JBeckman, you posted while i was typing a message.

Nui. If a DX12 game implements it. Wich is none of them so far afaik.


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