Portal: Prelude RTX

Game assets are still passed into vram with DS, it's not "passed to the GPU", your ssd is not a VRAM cache. It's just that when you have DS, you can push data to VRAM so fast that you don't need to cache ahead of time - so instead of preloading 16gb of data into vram for the game's level you just put in what's needed for the next few seconds of gameplay, then after a few seconds your kick out the data in vram and replace with new data

That's why vram usage should be lower with ds1.2 games, the negative is that your ssd has to work a hell of a lot harder and that will reduce its lifespan
 
I don't see why SSD lifespan would be reduced, as it's all read data off the SSD, not writing to it though, there is no wear done to the data blocks when simply reading each block's state.
 
SixTwoSix said:
Oh, this is just a remaster with shinies? :(

Would love an actual Portal 3
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You want Valve to actually spend time developing a new game? :eek:

You wild and crazy chap!

We're lucky we get even this. Developing games costs money, and why do that when they can just farm 30% of all sales on steam?

And yes, I'd love for them to come up with a full new game too. But they seem to have a phobia of the number 3, or trying something new...
 
Mouse juddering issue and single line scren tear noted above fixed, enabled vsync in the nvidia control panel (have gsync display) - That sorted it even though the fps with frame gen remains the same around 112, which is way below my 144Hzh refresh rate, I guess the wrapper implementation in this game as it's so old bugs out screen refresh or something internally.
 
As expected ye olde 3080 is barely hanging in there with DLSS with this. I missed this too whenever they put it out for the original. It's definitely a post game mod. Been a while since I played through Portal 1 and 2 and I'm often left pondering the next step for a while.
 
{{INX}} said:
Ran terrible on my 5800x3d & 7900XTX. Would be interested to see how others with AMD perform.
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I thought AMD GPUs didnt have RTX, so makes sense it ran terrible.
Tried it, ran at around 40fps on high settingin 3440 x 1440 on my 3090 Ti. Maybe I should enable DLSS 2 or something
 
If you didn't change anything in settings then you already are running DLSS2 in the preset mode, for your card will probably be performance mode as it auto detects. DLSS2 is on by default basically, and then DLSS3 FG if a 40 series is detected.

AMD cards can do RTX, that's just Nvidia's name for ray tracing. The reason it runs like crap is because AMD don't really put any focus on optimising for ray tracing to the same level as Nvidia is all. There's no upscaling support for AMD cards either as there's no FSR support in this title, so non Nvidia cards will get the short straw. AMD cards will also do RTXIO because it's GPU decompression via the Vulkan API which AMD supports. But this matters little at improving performance as it's asset streaming tech, nothing to do with ray tracing/path tracing!
 
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Never played this Portal mod before. Ran fine at 1080p 50 fps on RTX 3080 10GB with Ray Tracing settings changed from High to Ultra looked amazing with DLSS2, tried turned off DLSS2 it not looked nice at 30 fps. Will stick with DLSS2. :)

Impressed game worked fine with RTX IO, I alt tab to desktop checked GPU in task manager found it used 8GB dedicated GPU memory and 1.9GB GPU shared memory. I am surprised Portal: Prelude RTX used more GPU shared memory compared to Forspoken 0.7GB GPU shared memory.
 
AthlonXP1800 said:
Ran terrible on 7900 XTX?

Guess you has 16GB RAM?

Someone managed to run it on 7800X3D, 7900 XTX and 32GB RAM fine with 1440p at 60 fps but dont know what Ray Tracing setting preset it was used.

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It's at the beginning of the video. 1440p TAA-U performance (didn't know they added this!) and medium image quality. Pretty much turning the sliders down just to be playable.
 
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