gpu Multicore GPU?

[Arima369]

I'm just getting into the world of computer tech and I'm intrigued by the multi-GPU systems. Generally, we need a SLI between the multiple GPUs' and this sometimes leads to micro-stuttering. This gets worse as we stack up. So is it possible that NVIDIA or AMD has the capability to eliminate the SLI and come up with a single multicore GPU dye? Assuming they can, will it be any better than the conventional GPUs?

[deXxterlab97]

There ar cards with multi gpu like a GTX 690, R9 295x2

[Jihakuz]

One of the main problems that I can see with this is power draw. One 1080ti uses 2x 8 pin power connectors (so 16 pins) and that's for one core with the new more power efficient pascal architecture. This does admittedly also power the rest of the board but I am guessing the actual processor draw the most amount of power, so let's scale that to 2/3/4 cores, that's going to be a massive amount of power drawn for just one GPU. I guess you could argue that SLI also already needs like 2+ 8 pin connectors, but is that really a safe amount of power to be going through one card?

[Arima369]

4 minutes ago, deXxterlab97 said:

There ar cards with multi gpu like a GTX 690, R9 295x2

Oh! I didn't know that! Thank you! 

[GoldenLag]

AMD doesnt use SLI-Bridges if that what you meant. They use crossfire and the AMD card mentioned here: 

14 minutes ago, deXxterlab97 said:

There ar cards with multi gpu like a GTX 690, R9 295x2

I believe the R9 295x2 uses crossfire and needs it to be enabled to utilize the full power of the card. Dont quote me on this though, i may be mistaken. 

[Morgan MLGman]

8 minutes ago, Arima369 said:

Oh! I didn't know that! Thank you! 

Yeah, but those cards suffer from the same SLI/Crossfire issues as having two separate cards. In this case, they're just two separate GPU chips on the same PCB.

 

EDIT: Also, moved to an appropriate subforum (Graphics Cards in this case).

[Thermosman]

crossfire has much better scaling than sli

[GoldenLag]

2 minutes ago, Morgan MLGman said:

Yeah, but those cards suffer from the same SLI/Crossfire issues as having two separate cards. In this case, they're just two separate GPU chips on the same PCB.

 

EDIT: Also, moved to an appropriate subforum (Graphics Cards in this case).

the first propper multi-GPU graphics card we might see may be Navi. This depends on if AMD applies their scalable technoligy to it or not. i dont know if its confirmed , but it is speculated to be. AMD might not be the first to have scalable GPU. maybe NVIDIA beats them to it

[Bananasplit_00]

thats what NAVI is, dual Vega cores on one PCB

[J400]

This already exists to a certain degree. nvidia can increase the number of cuda cores and shader units on a gpu to their liking. the problem comes into play when the amount of power to run the gpu and the amount of cooling required make it hard to fit on a card, and start to eat into the professional market.

 

This is why gpus scale in performance significantly faster than cpus, as software for cpus has been optimized to scale by the speed of a single core, where as the gpu oriented software tends to scale more effectively with compute performance. as a result, breakthroughs in efficiency, power regulation, and die size allow the gpus to continue to scale in performance at a fast rate.

[porina]

If you're talking about cores as like on a CPU, GPUs are already massively multi-core. On nvidia side, look at the cuda core count for example, it runs to the thousands on the high end cards. Very roughly, the more you have in a single package, the more performance you can get from that package. There is a practical limit to size though, which is why they don't just keep scaling up forever.

 

Multi-package can get around that, but with the problems already discussed. I think AMD are looking at this closely, as a parallel to the CCX philosophy of Zen, to make it easier for them to scale in future.

[GoldenLag]

6 minutes ago, Bananasplit_00 said:

thats what NAVI is, dual Vega cores on one PCB

Navi might be Scalable Vega dies put together. Though they might use smaller GPU dies and glue them together instead to increase yields. maybe a 32x4 setup, idk im just speculating on how the Zen arcitecture looks

[Arima369]

9 minutes ago, Morgan MLGman said:

Yeah, but those cards suffer from the same SLI/Crossfire issues as having two separate cards. In this case, they're just two separate GPU chips on the same PCB.

 

EDIT: Also, moved to an appropriate subforum (Graphics Cards in this case).

Ok but if the they still have the crossfire issue, is there really any other advantage performance wise?

[Morgan MLGman]

2 minutes ago, Arima369 said:

Ok but if the they still have the crossfire issue, is there really any other advantage performance wise?

Not really, advantages are that your case is less crowded, you don't need a high-end board that can fit two separate GPUs etc. It's also easier to go for a Quad-Fire configuration (two GPUs with two GPU chips each), though it's not a recommended setup for pretty much anything.

Cards like that aren't too popular, they're also usually expensive. This may change with Navi (AMD next gen) bringing two Navi GPUs connected through Infinity Fabric, but it's not anything confirmed yet.

[Arima369]

15 minutes ago, GoldenLag said:

AMD doesnt use SLI-Bridges if that what you meant. They use crossfire and the AMD card mentioned here: 

I believe the R9 295x2 uses crossfire and needs it to be enabled to utilize the full power of the card. Dont quote me on this though, i may be mistaken. 

Yes it uses crossfire and I guess it's a engineering complexity to replace the crossfire even though the two GPUs sit on the same dye..

[GoldenLag]

1 minute ago, Arima369 said:

Yes it uses crossfire and I guess it's a engineering complexity to replace the crossfire even though the two GPUs sit on the same dye..

AMD probably has infinity fabric. That will probably be what completely replace crossfire.  some multi-GPU may still be available for work stations.

[Chanchanman]

Hey guys I had a question regarding the new ryzen APUs as I wanted to build a system for meself and seeing the freaking increase in the graphic card prices I would really like to know if a Ryzen 3 1200 along with a GTX 1050ti would be better or a Ryzen 3 2200(APU) along with a GTX 1050 (not the ti version) would give me better performance. Thanks

[Jurrunio]

1 minute ago, Chanchanman said:

Hey guys I had a question regarding the new ryzen APUs as I wanted to build a system for meself and seeing the freaking increase in the graphic card prices I would really like to know if a Ryzen 3 1200 along with a GTX 1050ti would be better or a Ryzen 3 2200(APU) along with a GTX 1050 (not the ti version) would give me better performance. Thanks

R3 1200 with 1050ti, because the integrated GPU dont do anything when there's a separate card. Cant CF with it even if you use an RX card.

[EposVox]

This actually used to be the kind of "Titan" slot for gaming cards for a while - the big beefy, between-generation card would just be two of the higher end ones glued together. They still counted as SLI/etc. and weren't very reliable. But it was fun to have a period of X2 and etc. cards knowing they were likely problematic. 

[supernova874]

Other thing is a multi gpu board like 295x2 and other is on same die multicore gpu so it would be faster and smoother than the multigpu the time would tell if it would be beneficial for us or not but I believe it will be.

[Mick Naughty]

Sli isn’t causing micro stutter. 

Thats software development outside of nvidia. 

Or a system that can’t keep up with the cards/gpu’s. 

 

Getting harder to pack stuff on a board so I doubt bigger dies will help. Especially the direction the market moves.