Anyone else tried using with 2 gpu's?

[Kapteeni Moukku]

I have 5700xt and since the base fps hit is substantial when using fg i decided to try offloading it to rx590 i had laying around.

It works but the fps hit is actually worse when fg is offloaded to 590 compared to doing everything on 5700xt.

Was pretty unexpected result imo.

[Spook]

Originally posted by xXDeiviDXx:

Although I wonder if those AMD iGPUs can handle the full quality version of LS frame gen...

I dare not guess, hard to find data on. Only things i can find were from Ally/Go on YT, which show LSFGing a game on one and the same GPU. Though keep in mind your iGPU is not a slouch at roughly 2/5ths the performance of a 780m. So the difference may be smaller than you expect.

[Ravenger]

Originally posted by Kapteeni Moukku:

I have 5700xt and since the base fps hit is substantial when using fg i decided to try offloading it to rx590 i had laying around.

It works but the fps hit is actually worse when fg is offloaded to 590 compared to doing everything on 5700xt.

Was pretty unexpected result imo.

If you haven't already, check the dual GPU guide pinned in Testing Chat on the Lossless Scaling discord.
Essentially, there's a few system requirements, such as both PCIe slots needing a minimum bandwidth. You also need to connect the display to the GPU doing LSFG, or the video will need to pass from one GPU to the other multiple times, thus heavily hitting performance.

[Spook]

Originally posted by Ravenger:

You also need to connect the display to the GPU doing LSFG, or the video will need to pass from one GPU to the other multiple times, thus heavily hitting performance.

If i recall correctly this was one of my major issues with getting this to work, as Windows did not allow me to set rendering the the main GPU, when the display was connected to the slave GPU. Is it possible to get ability to select between the two on a desktop Windows installation?

[Xavvy]

One of the major issues with using an iGPU like a 780m.. I mean it's pretty damned impressive for an iGPU and the 880/890m are even more so with nearly double the performance.. The problem is that with these iGPUs they are most often accompanied with high end hardware that is trying to render 4K and very high FPS and as powerful as they are.. I have a rig with a 780m in it for iGPU.. and it just isn't really capable of rendering 4K 60-90fps base for 2-3x interpolation.

That's just too much for it and it's not much use, since on that high end PC i'm not interested in trying to interpolate 45-60fps in x3/x2 modes and there's no way it would handle an x4 m ode @4k. BUT if you were gaming on like 7940hs with mid range GPU trying to target high fps at 2K then that kind of iGPU would be insanely good. but yeah they still really aren't useful for offloading stress on the dGPU in a high end scenario.

That said I use the hell out the 780m in my Alienware X16 with a 4070(again.. mid range GPU) because I'm only doing 2K @ 165hz with desktop scaling. So I put LSFG in performance mode and it's pretty awesome. The iGPU will fully output 2K @ 53-80fps base in x3/x2 modes and only stress to about 81% which is ideal. The 780m is beefy enough that I won't lose frame pacing at 81% usage on it. So pretty much any game I can crank all settings to the max.

Maybe a bad example sorry. I just mean someone with a 7940hs laptop in like a m18 laptop with a near desktop trimmed sku 4080/4090 with a 144hz 4k 18inch screen isn't going to be able to get much out of the iGPU because at that rate you'd want to run in full quality mode in 4K etc and it's just not going to handle it where as the 780m will handle low end to higher mid end fairly well. but yeah 4K high refresh rate is pretty much out of the question for current higher end iGPUs.

Although maybe the new 890m could handle 4K 60fps interpolated to 120fps in quality mode. I know it's basically the same speed as a GTX1070 laptop GPU.. which is only 12% slower than a desktop 1070.. soo pretty damned impressive for an iGPU.. but until we see it in action.. no one will know for sure. Apparently it's going into some APU but there are rumours that the at least the 880m which is apparently only marginally slower will be releasing with the 9540hs..

That will legit be insane. Can you imagine a bloody iGPU with the ballpark horsepower of a fuqqing 1070.. this will be a game changer for gaming laptop owners with LSFG.. The amount of frame gen that's going to be able to handle in the 2K/4K DLDSR range is going to be insane. Imagine a fuqqing laptop with a Ryzen 9 9540HS with a bloody RTX 5070.. and a 2K 360hz 16inch thin build like x16 or razer blade. Like this will be nuts.

I have an m18 with a 4080 but I like my thin build laptops and you never want to go past a x070 with a thin laptop.. same reason you never go past x080 GPU in a laptop. thin laptops can't handle the heat from anything x060/x070 historically and full sized gaming laptops can't handle the heat from anything x090 historically.

In most full sized the 4090 was only 6% faster than the 4080 because of impossible to handle heat issues. same with 4070 vs 4080 thin laptops. On paper the 4080 laptop sku was supposed to be roughly 40-50% faster but in reality it was only about 20% somestimes less because in a thin laptop the bloody thing would melt LOL so it constantly has to throttle itself.

I really wish they would bloody well make better cooling methods for gaming laptops. The stronger hardware gets the most tempered they have to be to withstand higher average temps. It's getting out of hand. I can only imagine how bloody hot a 5090 laptop card will be.. LOL By the time we get to 6090 laptops we'll be able to use it as a stove top to make macaroni.

[Spook]

Originally posted by Xavvy:

Although maybe the new 890m could handle 4K 60fps interpolated to 120fps in quality mode.

I'd be very surprised if it could. My 4060 desktop card failed 4k60>120fps, and had to 1440p60>4k120 instead. Though that did also have a game running on it, albeit a very light one.

Imagine a ♥♥♥♥♥♥♥ laptop with a Ryzen 9 9540HS with a bloody RTX 5070.. and a 2K 360hz 16inch thin build like x16 or razer blade. Like this will be nuts.

Hehe, iGPUs are about to get there, horsepower-wise, in the next few generations.

We'll have to see how mainly Nvidia will react to this. If it makes financial sense, we may be seeing SLI-like solutions again for the acceleration of AI-enhancing videogames. Or some m.2-esque drop-in solution directly into a GPU.