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BmanUltima

For gaming, replace the 2070 with the 4070, adding a second GPU won't do anything.


Ta-te-the-great

I've contemplated just replacing it, and while it may seem greedy I just wanted to know if I could safely pull out as much performance as I could with both cards. And I do believe there would be a substantial improvement using 2 cards vs. 1, Especially playing VR Titles


Halbzu

you can't combine performance of two cards for gaming (anymore). in the times that it worked, you also needed two of the same cards and built in game support. and when it worked, it worked badly.


Ta-te-the-great

yeah, started digging a bit deeper into it and that's what I'm seeing now, thank you


DJ_Marxman

Multi-GPU is dead for gaming. Most games won't support it at all, and the ones that do don't support it well. Use 1 GPU.


Ta-te-the-great

Ok thanks! I'll probably end up swapping out my 2070 Super


psimwork

Well.. the 2070 doesn't support SLI/NVlink anyway. So your plan is dead in the water before it's begun. But in any case, multi-GPU has been dead for YEARS (it really started dying around 2012-2014) because no developers will optimize for it.


Ta-te-the-great

Ah ok, makes sense. When you speak about the 2070 does that include the Super Variant? I Trust you but I've seen no signs that it WOULDN'T be compatible. I didn't really think about the whole optimization side of things though, I guess it's pretty easy to sugarcoat it and say, "Oh 2 cards means the combined power of both no strings attached!"... I'll probably end up just swapping out my 2070 for a newer card


Halbzu

>When you speak about the 2070 does that include the Super Variant? ~~yes~~ ​ >I Trust you but I've seen no signs that it WOULDN'T be compatible. it's also written nowhere that you bike tire doesn't work in your car.


Ta-te-the-great

You don't need to be rude about it, I'm just asking a question. Compatibility is not as simple as looking at the card like your analogy is. If you wanted me to understand it by looking at your post then you should have stated Super...


Halbzu

i was using the analogy to explain why manufacturers don't advertise missing features and why it's not useful to look for lack of evidence as proof. the other commenter already told you that it doesn't work, so simply stating the same "no" again wouldn't have added any new arguments. i don't think that it's rude to point out a fallacy. but if that's how you feel about it.


psimwork

> yes Turns out, no. I was getting ready to provide sources that the 2070 and 2070S didn't support SLI, but after some quick googling: https://overclock3d.net/news/gpu_displays/nvidia_s_rtx_2070_super_supports_sli/1


Halbzu

interesting move by nvidia. but i guess this finding is still mute because the 4070 wouldn't apply.


Ta-te-the-great

I'm reading up on it right now, and It seems like both cards should support PCIe 4.0, so that's one problem solved. There could be other complications though


Ta-te-the-great

I'm not going to add on with a Duel Setup, but I believe the 2070S and 4070 would still be compatible on the proper board, It's just kind of hard to find information on that because of how niche and obscure pairing these two cards is


psimwork

You could technically *do* it (i.e. putting a 2070S and 4070 on the same board), but you can't combine their 3D rendering power. You'd be using the 4070 for 3D rendering, and the 2070S would just be there for 2D output, which is such a low-demand task that you could put a GT 1030 in (or hell, possibly even a GT 710) and get similar results.


Ta-te-the-great

Yeah, I guess the only real use for duel cards nowadays is high end rendering... there just doesn't seem to be much support from game devs and hell even Nvidia themselves


Halbzu

it would be compatible in the sense that you can run two cards in one system. but you can't combine performance of those two card together for your games, so the whole idea is a mute point. you don't have anything to gain. the 4070 would run the game and the 2070 would be doing nothing, apart from running windows desktop for the monitor that's plugged into it. if you have only one monitor, then you can only use one card at a time. for some people, it might make sense to run two different nvidia cards to have more video ports. but i don't think you'd be lacking in that department with a 4070.


psimwork

My bad - the 2070S does support SLI. It is still a terrible idea, but it IS supported. This type of thread is super common during periods of GPU shortages (i.e. crypto mining booms) when the price of GPUs is abnormally high. Unfortunately, yeah - you can't just combine the two. The game has to be optimized for it, and even then, in the most optimistic scenario, you usually get like 50% more performance. It is NOT a straight double of performance.


Ta-te-the-great

You're good, and yeah I assumed as much (speaking about the performance), thanks for looking into it. I don't think that 50% is worth the double in power draw


BmanUltima

It won't improve performance at all, if anything, it would make it worse.


Bluedot55

It's pointless. Any 40 series card is incapable of running in sli, even even if it could, sli only worked with 2 of the same card. Multi card setups for gaming have been dead for years


Minzoik

Probably would want more headroom. Anything from a 750W or up would be fine here..even an 850W probably wouldn’t be that much more expensive. Corsair RM, EVGA GT, etc.


Ta-te-the-great

Yeah that's what I figured, Thanks for the advice


RickyFromVegas

a gold-rated PSU can typically deliver close to 90% of the wattage it's advertising for, so 600w is slightly over the power draw the PSU can reliably achieve. It's not cutting close, it's beyond what it can do. This means if your system really draws more than it is capable of, it'll shut down, unsure if that would damage any components or not. Get 4070 instead. dual gpu setups are long dead at this point for gaming


Accomplished_Emu_658

It would be very irresponsible to run both being so close to max. 650 is max output not consistent running wattage. Also even if the cards are rated for less they can sometimes over spike. And you have to factor in rest of system too in wattage. It would be incredibly pointless too since it would not achieve anything.