quad cf

[zedselder]

i know that what im about to ask is kinda stupid and wont work, but its just a hypothetical question
so im one of those people who are waiting for the fury x2
and i know that the limit of sli/cf is 4 cards max
but can someone tell me what could happen if 4 fury x2 cards are connected in one motherboard

[Lays]

You could still use them as compute cards, just not for games past 4 GPU.

[Godlygamer23]

When you look at the 4 card limit for both, it's talking about four single GPU cards. If you have four Fury X2's, two of them could be put into Crossfire while the other two could be used as compute cards.

[Enderman]

a fury x2 would be two GPUs

you can only have a maximum of 4 GPUs for gaming

that would mean two fury X2s max

 

if you add more they will no longer work in crossfire, but its still porrible to use them for programs that use GPU rendering or computing (such as mining)

 

so basically for gaming, two cards aka four GPUs max

[zedselder]

You could still use them as compute cards, just not for games past 4 GPU.

so that's the point why cant i use all of them? i mean the fury x2 is a dual gpu card, so its basically 2 fury x in one card but they use one pci-e slot and both of them get the same bandwidth. so i mean at the end its one card, i mean if amd made a 4 gpu card lets say the fury x4 then will that make it a quad cf card and wont give you the ability to put another card

in this link the first multi gpu card was from 3dfx and it was a tri gpu card and you had the ability to put another one with it in sli mode so that gave you a total of 6 gpus why cant we do that now with all the tech around

http://www.maximumpc.com/quick-history-multi-gpu-video-cards-2014/

[zedselder]

a fury x2 would be two GPUs

you can only have a maximum of 4 GPUs for gaming

that would mean two fury X2s max

 

if you add more they will no longer work in crossfire, but its still porrible to use them for programs that use GPU rendering or computing (such as mining)

 

so basically for gaming, two cards aka four GPUs max

 

 

When you look at the 4 card limit for both, it's talking about four single GPU cards. If you have four Fury X2's, two of them could be put into Crossfire while the other two could be used as compute cards.

so that's the point why cant i use all of them? i mean the fury x2 is a dual gpu card, so its basically 2 fury x in one card but they use one pci-e slot and both of them get the same bandwidth. so i mean at the end its one card, i mean if amd made a 4 gpu card lets say the fury x4 then will that make it a quad cf card and wont give you the ability to put another card

in this link the first multi gpu card was from 3dfx and it was a tri gpu card and you had the ability to put another one with it in sli mode so that gave you a total of 6 gpus for gaming why cant we do that now with all the tech around

http://www.maximumpc.com/quick-history-multi-gpu-video-cards-2014/

[Godlygamer23]

so that's the point why cant i use all of them? i mean the fury x2 is a dual gpu card, so its basically 2 fury x in one card but they use one pci-e slot and both of them get the same bandwidth. so i mean at the end its one card, i mean if amd made a 4 gpu card lets say the fury x4 then will that make it a quad cf card and wont give you the ability to put another card

in this link the first multi gpu card was from 3dfx and it was a tri gpu card and you had the ability to put another one with it in sli mode so that gave you a total of 6 gpus why cant we do that now with all the tech around

http://www.maximumpc.com/quick-history-multi-gpu-video-cards-2014/

Understand that it is possible to have more than 4 GPUs in Crossfire/SLI from a technological standpoint, but the scaling is not very good past two cards. I imagine that's why both AMD and NVIDIA stopped at four cards - bad scaling. But even if the card is one physically, the system sees two separate GPUs. It doesn't care about your form factor - it cares about the hardware. You are still bound to the same limitations as someone using four Fury X's.

[zedselder]

Understand that it is possible to have more than 4 GPUs in Crossfire/SLI from a technological standpoint, but the scaling is not very good past two cards. I imagine that's why both AMD and NVIDIA stopped at four cards - bad scaling. But even if the card is one physically, the system sees two separate GPUs. It doesn't care about your form factor - it cares about the hardware. You are still bound to the same limitations as someone using four Fury X's.

i know but they could have left it open or gave people an option to override it, besides games a lot of programs would favor more gpus and gaming on tri 4k is still not that good on 4 gpus

but i wanna know amd seems to like the idea of multi gpu cards and its somehow power efficient so why not make a 4 gpu card, just asking hypothetically    

[Godlygamer23]

i know but they could have left it open or gave people an option to override it, besides games a lot of programs would favor more gpus and gaming on tri 4k is still not that good on 4 gpus

but i wanna know amd seems to like the idea of multi gpu cards and its somehow power efficient so why not make a 4 gpu card, just asking hypothetically    

You have to implement profiles into games and games must be developed to utilize more than one card. As I said before, scaling past two cards is not very good at this point. And how would you cool a four GPU card?

[Enderman]

so that's the point why cant i use all of them? i mean the fury x2 is a dual gpu card, so its basically 2 fury x in one card but they use one pci-e slot and both of them get the same bandwidth. so i mean at the end its one card, i mean if amd made a 4 gpu card lets say the fury x4 then will that make it a quad cf card and wont give you the ability to put another card

in this link the first multi gpu card was from 3dfx and it was a tri gpu card and you had the ability to put another one with it in sli mode so that gave you a total of 6 gpus for gaming why cant we do that now with all the tech around

http://www.maximumpc.com/quick-history-multi-gpu-video-cards-2014/

yup

crossfire has a limit of 4 GPUs

it doesnt matter how many cards

 

you're right, a fury X4 with 4 GPUs on a single card would only allow for that one card to be used in games (games that support quad crossfire that is)

[zedselder]

yup

crossfire has a limit of 4 GPUs

it doesnt matter how many cards

 

you're right, a fury X4 with 4 GPUs on a single card would only allow for that one card to be used in games (games that support quad crossfire that is)

so i think using dual gpu cards is better since both would get the x16 bandwidth from the pci-e 

 

You have to implement profiles into games and games must be developed to utilize more than one card. As I said before, scaling past two cards is not very good at this point. And how would you cool a four GPU card?

the same way you cooling a dual gpu card like the r9 295x2 but instead of a single 120mm radiator you can you 2 or 3 120mm radiator

and maybe the 4/6/8 gpus wont be good in gaming but in other applications i think i would be useful 

[Godlygamer23]

so i think using dual gpu cards is better since both would get the x16 bandwidth from the pci-e 

 

the same way you cooling a dual gpu card like the r9 295x2 but instead of a single 120mm radiator you can you 2 or 3 120mm radiator

and maybe the 4/6/8 gpus wont be good in gaming but in other applications i think i would be useful 

A four GPU card would be very limiting in compatibility. And yes, you have a point there, but that's in compute tasks.

[zedselder]

A four GPU card would be very limiting in compatibility. And yes, you have a point there, but that's in compute tasks.

what kind of compatibility 

if its wattage then its no problem a single fury x uses 275 watt a dual fury has 2 8pin connectors so its rated at 375 watt so that a 100 watt more for the second gpu so a 4 gpu card would take about 575 watt that better than getting 4 fury x or 2 fury x2 it would then use 3 slots which is still better than using 8 slots for 4 fury x or 4 slots for 2 fury x2 and it would use a 240mm radiator which is better than 4 fury x and the same as 2 r9 295x2

and yup we can forget about 6/8 gpus for games but for other tasks i think it would be good to have more and i also think in tri 4k gaming 6/8 gpus would help since 4 titan x didn't do the job quite well

i know i may sound somehow overkill and my questions are kinda outside the box and insane but i mean that's what new ideas are all about right 

[Godlygamer23]

what kind of compatibility 

if its wattage then its no problem a single fury x uses 275 watt a dual fury has 2 8pin connectors so its rated at 375 watt so that a 100 watt more for the second gpu so a 4 gpu card would take about 575 watt that better than getting 4 fury x or 2 fury x2 it would then use 3 slots which is still better than using 8 slots for 4 fury x or 4 slots for 2 fury x2 and it would use a 240mm radiator which is better than 4 fury x and the same as 2 r9 295x2

and yup we can forget about 6/8 gpus for games but for other tasks i think it would be good to have more and i also think in tri 4k gaming 6/8 gpus would help since 4 titan x didn't do the job quite well

i know i may sound somehow overkill and my questions are kinda outside the box and insane but i mean that's what new ideas are all about right 

In order to do that, you need to add more supplemental power connectors and/or increase the amount of power going through each cable. In order for the 295X2 to exist in its current form, that's what AMD did and they went outside of the PCIe specs to make the card happen. VRMs ran hot as well.

 

Compatibility is also important. The card would either need to be wider or longer in order to accommodate the extra GPUs and traces, on top of the extra rad space. The card as of right now would be niche and would be a waste of money for AMD to develop. Maybe some other company can do it, but considering the optimization levels for gaming, it wouldn't do very well. If you tell them to do it for purely compute, that's also a niche market compared to gaming.

[zedselder]

In order to do that, you need to add more supplemental power connectors and/or increase the amount of power going through each cable. In order for the 295X2 to exist in its current form, that's what AMD did and they went outside of the PCIe specs to make the card happen. VRMs ran hot as well.

 

Compatibility is also important. The card would either need to be wider or longer in order to accommodate the extra GPUs and traces, on top of the extra rad space. The card as of right now would be niche and would be a waste of money for AMD to develop. Maybe some other company can do it, but considering the optimization levels for gaming, it wouldn't do very well. If you tell them to do it for purely compute, that's also a niche market compared to gaming.

well they would have to add 2 other 8pin connectors besides the 2 that's already there

and yup vrm would get hot but still they can be cooled by the water coming in from the radiator just like the fury x

i don't think it would be any wider than the titan z or any longer than the r9 295x2 and one 240mm ran would be enough for it

and your correct its a niche market but i think it wont be a total lose i mean it would still find its way around 

[Godlygamer23]

well they would have to add 2 other 8pin connectors besides the 2 that's already there

and yup vrm would get hot but still they can be cooled by the water coming in from the radiator just like the fury x

i don't think it would be any wider than the titan z or any longer than the r9 295x2 and one 240mm ran would be enough for it

and your correct its a niche market but i think it wont be a total lose i mean it would still find its way around 

Think of R&D and then talk about profit. I don't think a company is going to sell cards at a loss like that. I do not believe the solution is viable in any form as of right now and if a company does make a 4 GPU card, they must realize it's a niche card. In addition, you claim the card wouldn't be any wider or longer. How so? You're accommodating extra hardware on the PCB.

[zedselder]

Think of R&D and then talk about profit. I don't think a company is going to sell cards at a loss like that. I do not believe the solution is viable in any form as of right now and if a company does make a 4 GPU card, they must realize it's a niche card. In addition, you claim the card wouldn't be any wider or longer. How so? You're accommodating extra hardware on the PCB.

yup i do realize, but that hardware is still small in terms of size i mean look at the fury x2 pcb its smaller than a 980 so putting other 2 gpus yup would result in maybe a card as long as the r9 295x2 with 3 slots and full height.  

[Godlygamer23]

yup i do realize, but that hardware is still small in terms of size i mean look at the fury x2 pcb its smaller than a 980 so putting other 2 gpus yup would result in maybe a card as long as the r9 295x2 with 3 slots and full height.  

Now accommodate the pumps.

[zedselder]

Now accommodate the pumps.

ok it will take some design work to make it, but you know what i will try to work on a scratch design and see where it goes from there maybe amd would buy my design :D

[zedselder]

Now accommodate the pumps.

and btw they could put the other 2 gpus next to the first 2 gpus in parallel separate pcb like this one

http://www.maximumpc.com/quick-history-multi-gpu-video-cards-2014/

it would make the card a 4 slot card with the same length and height as the fury x2