Vega/Navi Rumors (Updated)

Page 82 - Seeking answers? Join the AnandTech community: where nearly half-a-million members share solutions and discuss the latest tech.
Status
Not open for further replies.

Glo.

Diamond Member
Apr 25, 2015
5,761
4,666
136
not really.If he and others reviewers have vega then launch should be like 2-7 days from now.Not gonna happen.
The launch is between last week of April and first week of May. Retail line rumor. At the same time RX 560 is supposed to launch.
 
Reactions: Crumpet
Mar 10, 2006
11,715
2,012
126
The launch is between last week of April and first week of May. Retail line rumor. At the same time RX 560 is supposed to launch.

Do you know this for certain? There haven't been too many rumors other than one from DigiTimes recently saying Vega launches at the end of June.
 

Glo.

Diamond Member
Apr 25, 2015
5,761
4,666
136
Do you know this for certain? There haven't been too many rumors other than one from DigiTimes recently saying Vega launches at the end of June.
I am not certain. That is why I say: Retail line rumors. Previous information I had on core counts, and memory configs of Nvidia GPUs were correct, so this time they can also be correct, but do not have to.

I can tell you one thing. The amount of mystery about Vega lineup is beyond anything I have seen to this day. It beats Apple's secrecy, even.
 

Head1985

Golden Member
Jul 8, 2014
1,866
699
136
I can tell you one thing. The amount of mystery about Vega lineup is beyond anything I have seen to this day. It beats Apple's secrecy, even.
Yet NV knows already months how vega will perform they always knows how future amd hardware will perform months before launch.
 

Glo.

Diamond Member
Apr 25, 2015
5,761
4,666
136
Yet NV knows already months how vega will perform they always knows how future amd hardware will perform months before launch.
Even if they know, they got that information only recently, like in 2 weeks ago. My retail line rumors are coming from 4-5 weeks ago, so the plans could've changed, but are they likely?
 

Head1985

Golden Member
Jul 8, 2014
1,866
699
136
They have simulation machines.They can sumulate it.Thats why they always knows months before launch performance.
this is why this time 1080TI is faster than TITANX and not slower like in maxwell generation.
 

Glo.

Diamond Member
Apr 25, 2015
5,761
4,666
136
One more retail line rumor, partially not belonging here, partially belonging.

There is separate design of Raven Ridge APUs, with 16 CU's and HBM2 on package, and they might launch this year for desktop in Q3-Q4. The reason nobody is talking about it is the same factor as Vega lineup launch. Maximum secrecy possible.
 

tamz_msc

Diamond Member
Jan 5, 2017
3,865
3,729
136
Let me get back on track:
https://forum.beyond3d.com/threads/...ssion-soc-tegra-x1.59968/page-14#post-1973875
Sebbbi from Beyond3D:
Just wanted to clarify that I meant AMD GCN2 (consoles) vs Nvidia's latest (Maxwell/Pascal). AMD PC GPUs have also improved since GCN2.

Improvements for general performance:
- GCN3 introduced delta color compression. Including ability to sample/load compressed textures without decompress step.
- GCN3 improved geometry tessellation performance
- GCN4 improved geometry performance in general (including fast strips, primitive discard, etc).
- GCN4 improved delta color compression.
- GCN4 added instruction prefetch (reduces pipeline latency, again helps with geom bottleneck).
- GCN4 improved async compute scheduling (GPU side)

GCN5 (Vega) adds these general performance improvements:
- L2 cache includes L2 ROP cache (L1 ROP caches under L2). Don't need to flush caches between pixel shader passes.
- Tiled rasterizer. Reduces overdraw, bandwidth and makes ROPs more efficient in general.
- Improved geometry pipeline (including proper load balancing, up to 2x higher peak throughput)
- General purpose memory paging system

(I didn't list features that don't bring performance improvements without programmer intervention)

All of these improvements mean that GCN5 should run general purpose pixel/vertex shader code much better than GCN2. GCN5 has most of the same tricks that are seen in modern Nvidia GPUs. There are nice compute improvements as well, but they need special programmer support (DPP, SDWA, FP16). We will see the real impact of these improvements when DX12 SM 6.0 becomes available. Doom is already using these features with Vulkan, resulting in nice gains.


So in order to get performance gains from FP16 you need to update the code of your application, same thing for Primitive Shaders(Programmable Geometry Pipeline). As for General Purpose Memory Paging System:
https://forums.macrumors.com/thread...her-apu-polaris-announcements.1975249/page-58

Part about The memory system:
General Purpose Memory Paging system works in a way that is pretty much revolutionary. You have 512 TB indexing available done on hardware level, for full HSA 2.0 Unified Memory compatibility without any software level abstraction. Lets take a theoretical approach, and lets say we have 3072 GCN core GPU, with 4 GB of HBM2 with 512 GB/s of bandwidth.

Current models of Memory System store both used, and unused data in memory of the GPU, because in general GPUs do not have enough horsepower to handle all of it in particular time. Vega changes this approach. Tile Based Rasterization, next generation Pixel Engine, that is connected to L2 cache, and massively improved geometry performance increase throughput of the GPU. What is important is feeding this GPU with data. GDDR5 memory cannot give enough bandwidth to feed those cores, with reasonable amounts of power consumed. Neither does GDDR5X. Titan Xp memory system consumes around 50W of power alone, and memory subsystem consumes at peak 75W of power, due to amount of memory controllers, but averages are lower due to both Memory Compression, and Tile Based Rasterization, and ROPs connected to L2 cache. HBM2 memory cubes - 8W, and whole memory subsystem will consume at peak 15W of power, and you still get the benefit of Tile Based Rasterization, ROPs connected to L2 cache, rather than memory controller, ETC.

What actually does this Memory format? Framebuffer compared to large amount of GDDR5/X memory is smaller, but the data are available immediately to the GPU, and larger portions can be executed in particular time. Think about this like Non-Volatile data stored in memory, and indexed data in the system(because the memory controller has access to data in the System RAM, SSD's, HDD's in your computer and even network storage) is volatile. You save even more memory power consumption because of unused data. The Framebuffer is small enough to not exceed PCIe bandwidth, so the data can be delivered where its needed, when it is needed. Its all done on hardware, without any software abstraction.

Im sure people can explain all of this much more clearly and in more detail.


In essence this works not only for games, but compute, rendering, professional applications, everything that can benefit from it.
Wow, I went through the back-and-forth between you and others on macrumors. You have inhuman levels of patience and perseverance. I would have packed my bags out of there if I were in your position.
 
Reactions: krumme

Glo.

Diamond Member
Apr 25, 2015
5,761
4,666
136
Wow, I went through the back-and-forth between you and others on macrumors. You have inhuman levels of patience and perseverance. I would have packed my bags out of there if I were in your position.
Well its actually the worst professional community I have found over the internet, but I can understand it actually. Professional and enterprise markets are least prone to change. Rather than cars, they want faster horses. And thats it.
 
Reactions: showb1z and krumme

sm625

Diamond Member
May 6, 2011
8,172
137
106
One more retail line rumor, partially not belonging here, partially belonging.

There is separate design of Raven Ridge APUs, with 16 CU's and HBM2 on package, and they might launch this year for desktop in Q3-Q4. The reason nobody is talking about it is the same factor as Vega lineup launch. Maximum secrecy possible.

I hope its true. And if so, they got good reason to keep it a secret. They could release a Brix-Pro size box that is more powerful than a PS4. They wouldnt even need a partner they could release the box themselves. Make their own little motherboard, add a SSD, and off to the races. If they were halfway competent they could make a killing selling these. It's what a steam box should have been. They should have had this on the market 2 years ago. It would have sold better than Fury. I am perpetually dumbfounded by this company's execution.
 

tamz_msc

Diamond Member
Jan 5, 2017
3,865
3,729
136
Well its actually the worst professional community I have found over the internet, but I can understand it actually. Professional and enterprise markets are least prone to change. Rather than cars, they want faster horses. And thats it.
I completely agree with that statement. It all boils down to admins who are actually knowledgeable about these things having little or no say in purchasing decisions.
 

Glo.

Diamond Member
Apr 25, 2015
5,761
4,666
136
I hope its true. And if so, they got good reason to keep it a secret. They could release a Brix-Pro size box that is more powerful than a PS4. They wouldnt even need a partner they could release the box themselves. Make their own little motherboard, add a SSD, and off to the races. If they were halfway competent they could make a killing selling these. It's what a steam box should have been. They should have had this on the market 2 years ago. It would have sold better than Fury. I am perpetually dumbfounded by this company's execution.
It is only a rumor, and there is a possibility that it is talking about Apple Co. Specific hardware(which would be pretty reasonable to think, in the context of the rumor and its secrecy). Just my thought on this.
 

Samwell

Senior member
May 10, 2015
225
47
101
The launch is between last week of April and first week of May. Retail line rumor. At the same time RX 560 is supposed to launch.

Nice rumour, just not gonna happen. With a launch at that time we would have leaks everywhere already. But no leaks mean, no mass production by partners, as from the point where mass production started (with Ref Designs just Packaging and Shipping) the partners can't keep the stuff secret anymore. So at least there will be no hard launch in the next two weeks. Best case paperlaunch but i still bet for computex.
 

Snarf Snarf

Senior member
Feb 19, 2015
399
327
136
All this back and forth about PCIe bandwidth not being sufficient for the HBCC and memory paging system takes the word streaming way too literally. The design does not imply that textures and frame buffer are CONSTANTLY streaming from PCIe to system RAM. The data from the frame buffer is intelligently managed in real time, and if new assets for future frames need to be called, they get called BEFORE the frames need to be rendered. PCIe 16x 3.0 bandwidth is more than sufficient to handle tiny calls for data.

This whole conversation ignores that AMD might have already imagined a scenario where they might need some localized storage on the card. We know they have the technology to use NAND flash storage as a giant frame buffer with massive bandwidth, what is stopping them from putting some NAND on the card as a localized data dump? NAND flash is extremely cheap, with the right controller (which might be built into the HBCC system) there would never be a scenario where the card would stall out as it can buffer through the NAND flash. 16GB of NAND would be so dirt cheap for AMD to purchase in bulk, we've seen consumer drives with retail mark up selling for as low as $ 0.35 a GB already.

All this being said, when it comes to GPU and engine knowledge, there aren't many more knowledgeable than Sebbi at beyond3d. If he says memory management sucks and can be way better, then its true lol. Realistically we're going to hit a point where we can't keep up the pace of just throwing more VRAM on cards. Next generation will have probably 16GB at the top end, maybe even 24GB on the new Titan V? There has to be a point where the power budget, card space, and layers on the PCB start to become more expensive than just using a higher bandwidth memory.
 

tamz_msc

Diamond Member
Jan 5, 2017
3,865
3,729
136
That GPU memory management can be improved in games is already apparent to me: playing Dirt Rally, once the loading is complete from start to finish, I hardly see that much of a difference in the VRAM occupancy driving for over eight-ten minutes through a stage.

I mean, even with the same memory bandwidth and size as the GTX 1080, Scorpio would still have to do checkerboarding on at least a few titles to get 4K 60fps.
 

CatMerc

Golden Member
Jul 16, 2016
1,114
1,153
136
They have simulation machines.They can sumulate it.Thats why they always knows months before launch performance.
this is why this time 1080TI is faster than TITANX and not slower like in maxwell generation.
Do they have the entire HDL code for AMD GPU's months in advance? Because otherwise, they can only guess.
Educated guesses, but still a guess.
 

CatMerc

Golden Member
Jul 16, 2016
1,114
1,153
136
Is it possible for a company to have access to something like that which belongs to its competitor?
No, it was a sarcastic comment. If any proof of such a thing would come to light, any company would be in MASSIVE legal trouble. No one would risk it.
 
Status
Not open for further replies.
sale-70-410-exam    | Exam-200-125-pdf    | we-sale-70-410-exam    | hot-sale-70-410-exam    | Latest-exam-700-603-Dumps    | Dumps-98-363-exams-date    | Certs-200-125-date    | Dumps-300-075-exams-date    | hot-sale-book-C8010-726-book    | Hot-Sale-200-310-Exam    | Exam-Description-200-310-dumps?    | hot-sale-book-200-125-book    | Latest-Updated-300-209-Exam    | Dumps-210-260-exams-date    | Download-200-125-Exam-PDF    | Exam-Description-300-101-dumps    | Certs-300-101-date    | Hot-Sale-300-075-Exam    | Latest-exam-200-125-Dumps    | Exam-Description-200-125-dumps    | Latest-Updated-300-075-Exam    | hot-sale-book-210-260-book    | Dumps-200-901-exams-date    | Certs-200-901-date    | Latest-exam-1Z0-062-Dumps    | Hot-Sale-1Z0-062-Exam    | Certs-CSSLP-date    | 100%-Pass-70-383-Exams    | Latest-JN0-360-real-exam-questions    | 100%-Pass-4A0-100-Real-Exam-Questions    | Dumps-300-135-exams-date    | Passed-200-105-Tech-Exams    | Latest-Updated-200-310-Exam    | Download-300-070-Exam-PDF    | Hot-Sale-JN0-360-Exam    | 100%-Pass-JN0-360-Exams    | 100%-Pass-JN0-360-Real-Exam-Questions    | Dumps-JN0-360-exams-date    | Exam-Description-1Z0-876-dumps    | Latest-exam-1Z0-876-Dumps    | Dumps-HPE0-Y53-exams-date    | 2017-Latest-HPE0-Y53-Exam    | 100%-Pass-HPE0-Y53-Real-Exam-Questions    | Pass-4A0-100-Exam    | Latest-4A0-100-Questions    | Dumps-98-365-exams-date    | 2017-Latest-98-365-Exam    | 100%-Pass-VCS-254-Exams    | 2017-Latest-VCS-273-Exam    | Dumps-200-355-exams-date    | 2017-Latest-300-320-Exam    | Pass-300-101-Exam    | 100%-Pass-300-115-Exams    |
http://www.portvapes.co.uk/    | http://www.portvapes.co.uk/    |