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JEMC said:

Nvidia might be moving to Multi-Chip-Module GPU design
http://www.guru3d.com/news-story/nvidia-might-be-moving-to-multi-chip-module-gpu-design.html
With Moore's law becoming more difficult each year technology is bound to change. At one point it will be impossible to shrink transistors even further, hence companies like Nvidia already are thinking about new methodologies and technologies to adapt to that. Meet the Multi-Chip-Module GPU design.

Nvidia published a paper that shows how they can connect multiple parts (GPU modules) with an interconnect. According to the research, this will allow for bigger GPUs with more processing power. Not only will is help tackling the common problems, it would also be cheaper to achieve as fabbing four dies that you connect is cheaper to do than to make one huge monolithic design.

Thinking about it, AMD is doing exactly this with Threadripper and EPYC processors where they basically connect two to four Summit Ridge (ZEN) dies with that wide PCIe lane link (they use 64 PCie lanes per link with 128 available), Infinity Fabric.

According to the researchers, as an example a GPU with four GPU modules they recommend three architecture optimizations that will allow for minimal loss off data-communication in-between the different modules. According to the paper the loss in performance compared to a monolithic single die chip would be merely 10%

Of course when you think about it, in essence SLI is already a similar methodology (not technology), however as you guys know it can be rather inefficient and challenging in scaling and compatibility. The paper states this MCM design would be performing 26.8% better compared to any multi-GPU solution. If and when Nvidia is going to fab MCM multi GPU module based chips is not known, for now this is just a paper on the topic. The fact that they publish it indicates it is bound to happen at one point in time though.

 

This is the research paper for those that want to give it a look, even if it doesn't say anything that's not on the article: http://research.nvidia.com/publication/2017-06_MCM-GPU%3A-Multi-Chip-Module-GPUs

I think it's interesting, and it could be the same thing AMD will do with Navi, when they revealed that roadmap last year with the tag "scalability"

Pretty sure they are already working in that direction. I mean, Threadripper and Epyc already show that it's feasible for them



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JEMC said:
Well, I sure hope that RX Vega will be a lot better than Vega FE in gaming, because if it has the same IPC than Fury X, then it will be a huge disappointment.

Vega has much more DX Functionality which the previous itinerations of GCN are all still missing. However, these are not fully unlocked in the drivers yet and will take some time until they're ready (tiled ressources and rasterization functionality, to be specific).

In other words, AMD is concentrating now on it's drivers to get Vega's power to the ground. They are optimized for GCN 1-4 and are now working to optimize GCN5 too. I expect the first benchmarks to be not too great but have huge jumps as the drivers get better, closing the gap to the 1080Ti over time



Bofferbrauer2 said:
JEMC said:
Well, I sure hope that RX Vega will be a lot better than Vega FE in gaming, because if it has the same IPC than Fury X, then it will be a huge disappointment.

Vega has much more DX Functionality which the previous itinerations of GCN are all still missing. However, these are not fully unlocked in the drivers yet and will take some time until they're ready (tiled ressources and rasterization functionality, to be specific).

In other words, AMD is concentrating now on it's drivers to get Vega's power to the ground. They are optimized for GCN 1-4 and are now working to optimize GCN5 too. I expect the first benchmarks to be not too great but have huge jumps as the drivers get better, closing the gap to the 1080Ti over time

My comment, was in response to those Gamernexus benchmarks results with Vega performing on par (or even a tad worse) than FuryX at the same frequencies. Of coursem this is based on the enterprise level Vega and we'll have to wait for the consumer version of it to take any conclusion, but it still looks a bit worrying.

 

And yes, AMD is already doing some of that MCM thing in their CPUs, and that has shown us  that the interconnection mesh is very important, and having it tied to the RAM speed in the Ryzen CPUs is a problem in some scenarios. They'll have to come up with something different for their GPUs.



Please excuse my bad English.

Currently gaming on a PC with an i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070

Steam / Live / NNID : jonxiquet    Add me if you want, but I'm a single player gamer.

Need some advice here !

My current config, from Nov 2014

Sabertooth Mk2
Intel i7 4790
Geforce MSI GTX 970 (4GB)
Win 7 64bit
RAM 16Gb

Everything runs nicely, but I'd like a bit more ooomph.

I'm not playing at 4k. I'm using a projector @ 1080p and I'm fine with it.

I'd like to upgrade, I was thinking buying a new graphic card first. I'm thinking about a 1080 or 1080Ti.

What do you think ?



Killy_Vorkosigan said:
Need some advice here !

My current config, from Nov 2014

Sabertooth Mk2
Intel i7 4790
Geforce MSI GTX 970 (4GB)
Win 7 64bit
RAM 16Gb

Everything runs nicely, but I'd like a bit more ooomph.

I'm not playing at 4k. I'm using a projector @ 1080p and I'm fine with it.

I'd like to upgrade, I was thinking buying a new graphic card first. I'm thinking about a 1080 or 1080Ti.

What do you think ?

My rig is not  very different from your: i5-4670k@stock, 16Gb RAM and Win 7 64-bit, and I recently got a GTX 1070 to play at 1080p that, so far, it's working like a charm.

If you're gaming at 1080p, that processor will become a bottleneck with a 1080Ti, not sure about the 1080, but of course the bottleneck will only forbid you to get really high fps. You'll still get 60+ fps on all current and not too distant games with any of those two cards.

So, if you're fine with almost twice the power of your current GPU, go with the 1080. If you want more than that, even if you won't notice the difference in fps or graphics, go for the 1080Ti.



Please excuse my bad English.

Currently gaming on a PC with an i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070

Steam / Live / NNID : jonxiquet    Add me if you want, but I'm a single player gamer.

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Killy_Vorkosigan said:
Need some advice here !

My current config, from Nov 2014

Sabertooth Mk2
Intel i7 4790
Geforce MSI GTX 970 (4GB)
Win 7 64bit
RAM 16Gb

Everything runs nicely, but I'd like a bit more ooomph.

I'm not playing at 4k. I'm using a projector @ 1080p and I'm fine with it.

I'd like to upgrade, I was thinking buying a new graphic card first. I'm thinking about a 1080 or 1080Ti.

What do you think ?

1080 I'd say but considering the gpu storages, the price of a 1080 might be pretty close to the 1080Ti so depends on the situation on where u live :P



                  

PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850

Thanks all for the answers !

Actually I don't want to change the OS cause I love my win7 ^^, I'll wait Star Citizen to change my mobo... which might not happen, or happen in a while !



Killy_Vorkosigan said:
Thanks all for the answers !

Actually I don't want to change the OS cause I love my win7 ^^, I'll wait Star Citizen to change my mobo... which might not happen, or happen in a while !

Star Citizen looks like to be a very demanding game. If you can, I'd wait until the release of the game to also upgrade your graphics card, because it can be the game that makes you decide between a 1080 or a 1080Ti... or one of the 20x0 series cards if they launch before the game.



Please excuse my bad English.

Currently gaming on a PC with an i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070

Steam / Live / NNID : jonxiquet    Add me if you want, but I'm a single player gamer.

This is how you have drops on RL with a 1080 and 6850k.



While it is spreading the load on most cores it still puts the majority of it on a single core. And that, my kids, is why more cores in gaming are useless.



If you demand respect or gratitude for your volunteer work, you're doing volunteering wrong.

vivster said:

This is how you have drops on RL with a 1080 and 6850k.



While it is spreading the load on most cores it still puts the majority of it on a single core. And that, my kids, is why more cores in gaming are useless.

Depends on whether or not the game uses it. We have a few games that do take advantage of multi-core and even hyper-theading. 



                  

PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850