[REDDIT] Alleged specifications of AMD's upcoming high-end Navi 21 GPU leaked on Chinese message board - Page 2 - Overclock.net - An Overclocking Community
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[REDDIT] Alleged specifications of AMD's upcoming high-end Navi 21 GPU leaked on Chinese message board

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post #11 of 105 (permalink) Old 01-01-2020, 05:06 AM
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Quote: Originally Posted by Defoler View Post
I doubt it will be twice as fast. Performance is no linear to how many cores it has. There are other factors like core speed, memory bandwidth and memory speed, as well as heat.
The 5700 XT is a 225W card. If the new one is going to be limited to 300W (which is expected), that means you will have a slower core to compensate for the heat, and I expect a much slower core. Even the 2080 TI is 300mhz slower than the 2080 super in order to handle the amount of heat the extra 41% cores generate. Larger memory bandwidth might compensate some of it, but not enough to make it twice as fast.

And you are comparing it to the 2080 TI. Nvidia are expected to release their own 7nm based on same TSMC manufacturing , so even if by some miracle AMD can pull such a performance increase, I expect nvidia to dwarf that when their bigger GPUs coming next year.

.
I dont not disagree your point for being unlikely twice as fast, which is based on perfect ideal linear scaling. But a 60% bump is truly possible, especially with better driver improvement and utilization. Also its possible the WC version could be 375W or even 500W like the R9 295x


In that range, it will be 15-20% faster than 2080 Ti, making it almost on par with upcoming 3080 if NV maintain their usual performance cadence.

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post #12 of 105 (permalink) Old 01-01-2020, 07:39 AM
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I hope it is true, but it reminds me of the big Polaris rumors.

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post #13 of 105 (permalink) Old 01-01-2020, 08:03 AM
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Quote: Originally Posted by guttheslayer View Post
I dont not disagree your point for being unlikely twice as fast, which is based on perfect ideal linear scaling. But a 60% bump is truly possible, especially with better driver improvement and utilization. Also its possible the WC version could be 375W or even 500W like the R9 295x


In that range, it will be 15-20% faster than 2080 Ti, making it almost on par with upcoming 3080 if NV maintain their usual performance cadence.
I don't know about a WC version, and I doubt they will ever make another consumer side dual GPU. You do remember the fiasco of the 295x2 right? 1500$ that went to 1000$ that went to 750$. It was a bad GPU overall. And with lower and lower support for multi GPU in games, I don't see AMD or nvidia releasing any dual versions (maybe a devil version that won't be a manufacturer card).

15-20% faster than the 2080 TI is a doubt still for me. The 2080 TI is about 50% faster than the 5700XT at 4K. I mostly expect a 2080 TI performance because even adding 100w and making it a 325W card (which I doubt), it will still not be enough to handle the amount of heat it will produce, so they will have to hold back the card.
A WC version might be matched to the AIB versions of the 2080 TI as well. Nvidia OCed is still pretty good once put in WC and temps are kept in check.

Things might also be very depend on time. If nvidia release their next series before AMD's new card, or on the same time, they could take AMD's thunder. If we will see a 2070 super replacement matching AMD's new big navi (which is what I expect considering 2070 and 1080 TI), it will completely take the carpet from under AMD.

Personally I think AMD will release a new refresh (like they did in polaris 3 times) and add a bit bigger card, and keep for now on the mid and low range fight. I don't see them fighting nvidia for the top end. But they might surprise me (though still, the 5700XT at 225W, even with incoming 7nm+, it is too much heat and power to have room for a big card).


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post #14 of 105 (permalink) Old 01-01-2020, 08:26 AM
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Ill be getting a new GPU and a new TV this year. So bring on the HDMI 2.1.

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post #15 of 105 (permalink) Old 01-01-2020, 08:51 AM
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Quote: Originally Posted by guttheslayer View Post
This monstrous 5900XT will be having 5120 +/- 1024 Stream processors.


Dont forget they are using 7nm+, which contain 20% more transistor density than 7nm. At >2x the die space we are talking about a huge ~22-24 Billion transistors. And if it really twice as fast as 5700XT it will definitely be ~40% faster than 2080 Ti. Of course the gigantic die size could be inflated due to AMD's RT hardware so begin twice as fast could be exaggerated.


But its a monster for sure lol.
what? RT hardware? I thought AMD was going with sorftware solutions for now?

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post #16 of 105 (permalink) Old 01-01-2020, 09:47 AM
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Clocks on this might not go very high due to size. Power and thermals will need to be kept in check.

I have high hopes from AMD for once after playing with 5700 and a 5700xt now which IMO are much better buys then 2060s-2070s. NAVI really is a good arch with great potential for AMD to build off. If they can refine it more with 7nm+ to build off then it can really bring something to the high end that shines.

Nvidia is always one step ahead though and won't allow to be bested. We really have no idea ampere arch improvements, on top of what 7nm die shrink could be impressive for once.
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post #17 of 105 (permalink) Old 01-01-2020, 09:53 AM
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Quote: Originally Posted by Ha-Nocri View Post
Hope they will fix multi-monitor idle clocks for memory, but since this issue is present since GCN 1.0 I highly doubt it.
What exactly is the issue?

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post #18 of 105 (permalink) Old 01-01-2020, 10:47 AM
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Isn't this next-gen Navi also going to be RDNA2 based? I thought I read that as well. If so, we should see additional performance gains in architecture.





Quote: Originally Posted by skupples View Post
what? RT hardware? I thought AMD was going with software solutions for now?
I believe AMD said they are going for a hybrid approach of both hardware and software-based. The hardware is a priority in doing calculations and you can bypass hardware functions for specific things in-game through software coding and feed it into a general GPU core. At least that's what I remember AMD talking about earlier in 2019.


edit:

Quote:
“The system includes a shader, texture processor (TP) and cache, which are interconnected. The TP includes a texture address unit (TA), a texture cache processor (TCP), a filter pipeline unit and a ray intersection engine. The shader sends a texture instruction which contains ray data and a pointer to a bounded volume hierarchy (BVH) node to the TA. The TCP uses an address provided by the TA to fetch BVH node data from the cache. The ray intersection engine performs ray-BVH node type intersection testing using the ray data and the BVH node data. The intersection testing results and indications for BVH traversal are returned to the shader via a texture data return path. The shader reviews the intersection results and the indications to decide how to traverse to the next BVH node.”
http://www.freepatentsonline.com/y2019/0197761.html
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post #19 of 105 (permalink) Old 01-01-2020, 10:50 AM
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both NV & AMD have issues with cards idling in 2D @ high res/ multiple screens. it's better than it used to be, but at least on the NV side, still pretty common.

at least, that sounds like what he's referring to. IE: the card likes to run @ 3D clocks when in 2D.

one thing I noticed on my 5700xt, window's default driver hard locks you into 30 fps, random & annoying tbf.

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post #20 of 105 (permalink) Old 01-01-2020, 11:05 AM
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Interesting 'leak'. AMD may take the gpu crown here. Holy hell. Either way, I expect at least a reveal, if not full blown announcement. No wonder Green is playing sneaky deeky with the 2080Ti Supa. Lol.


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