Probably not that big of a deal for most but seems that 2 way is the way forward for multi gpu now. Some benchmark apps will have support, not games though.
http://www.pcper.com/news/Graphics-...3-Way-and-4-Way-SLI-will-not-be-enabled-games
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3/4 way sli won't be enabled for GAMES
- Thread starter Gerard
- Start date
Probably not that big of a deal for most but seems that 2 way is the way forward for multi gpu now. Some benchmark apps will have support, not games though.
http://www.pcper.com/news/Graphics-...3-Way-and-4-Way-SLI-will-not-be-enabled-games
Soldato
- Joined
- 1 Jun 2014
- Posts
- 5,107
It doesn't affect me personally, but the timing is interesting. Would this be down to a technical limitation on their side somewhere, or resistance from devs or what?
bummer!
someone reported this like very early and the poor guy got blasted, even on reedit and twitter you had nvidia explain, that it was possible to 3/4 way with regular bridges and get enthusiast key.
i think their decision to exclude games was still being debated inside nvidia
and in a way it makes sense mgpu is broken, if they can make it better by focusing on 2way, thats a +.
someone reported this like very early and the poor guy got blasted, even on reedit and twitter you had nvidia explain, that it was possible to 3/4 way with regular bridges and get enthusiast key.
i think their decision to exclude games was still being debated inside nvidia
and in a way it makes sense mgpu is broken, if they can make it better by focusing on 2way, thats a +.
Associate
I hope we see a full revision of SLI soon. The current method has been unchanged for 12 years, and frankly sucks.
Glad they're ditching 3/4-way though, it's a move in the right direction and considering how poor the gains from those extra GPUs are, it's practically consumer-friendly.
Soldato
People who run 2 x GPU's are a minority in PC gaming, People who run 3 x GPU's are an even smaller minority and people who run 4 x GPU's are an extreme minority so it's just not worth it from a developmental cost perspective.
Man of Honour
How wrong you are.
I expect to see good 4 way SLI in quite a few games with the 1080s.
This is quite an easy statement to make as there is very good 4 way scaling in a number of the latest games. Unfortunately most people don't know this as they are not in a position to test it.
Something people should be very concerned about is DX12 based games as mGPU support is left to the devs. Unfortunately all the game devs care about is making money and this can mean no mGPU support at all and that includes 2 way.
If 3 and 4 way support does go it will very likely be that 2 way support goes too.
Soldato
Can't see it to be honest, Gotta remember people who use 3 or 4 GPU's in the same system are the extreme minority so from a developmental standpoint it's just not worth putting time into it were as 2 way is, Plus after 2 card the gains start to slip off pretty quickly.
Man of Honour
The gains are very good beyond 2 cards actually. The reason you don't see this in reviews is they use the same settings as they would for a single card and end up bottlenecking the CPU.
With DX12 mGPU support will not be up to NVidia, it will be in the hands of game devs and they could use 8 way SLI if they wanted to.
Soldato
Associate
I highly doubt game developers are going to bother with tuning for 3 and 4 way SLI with DX12 and beyond. Heck, I expect 2-Way SLI (NVIDIA's main focus) to even decrease in use now that it's out of NVIDIA's hands.
mgpu is bound to catch on once the majority of Devs move to DX12/Vulkan, now they are still using old engines, but when the new ones start rolling in, i expect most of them to be built from the ground up with the new APIs and mgpu in mind.
Soldato
+1
Its seems that some people think if games didn't have 3/4 way support the 2way support would be better, there is nothing to back that up, when was the last time that a game had better 3/4 scaling than 2 way, 2 way is the foundation for 3/4 way, the 2 way has to scale well for 3/4 way to even stand a chance of scaling well. When was the last time that 3/4 way had less bugs than 2 way, the 2 way has to have less bugs for 3/4 way to have less bugs, when was the last time you seen a game or a release note that said a bug exists on 2way but not for the 3/4 way.
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Man of Honour
I will laugh my backside off if Vega beats Big Pascal.
One of the first things that will happen is NVidia will rediscover their commitment to 2, 3 and 4 way SLI.
And there is a very good chance 14nm Vega will be top dog ......
Soldato
Yep, and it makes sense to focus on the most common set up. Coding for more than 2 cards is surely coding for less than 1% of it's consumer base?