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This is puzzling. 3.8x more power and the GPU load drops to only 70% compared to 90% for the 3070 Ti. If you've applied the tips above and still nothing, then I guess you'll have to compare step by step with those who have managed to interpolate x3 in real time.

Same video file - the LG demo I suggested and encoding to start with. Write how many FPS you have for RIFE interpolation. We will compare the FPS of the encoding first. In the next post I will give further, my ideas and we will see how they will affect the FPS.

Thanks for the additional information.

175hz HDR
great, we have a big room to test

3440x1440
this probably shouldn't be a problem if scaling is done inside the monitor

Gsync
great, automatic adjustment

I NEED TO CHECK THIS AND REPORT BACK
OK

I use it on due to gaming on system also.
This means it would be worth checking if things improve with OFF. You can always easily go back to on

I scale everything down to by 21:9 screen so the black bars are completely gone and my entire screen is filled.
So the original file is full 4K. If any scaling is done in RAM then this can be an extra strain on RAM bandwidth. It would be good to have some 4K HDR file already in about 21:9 format for comparison that doesn't need to be scaled.

I NEED TO CHECK THIS AND REPORT BACK
OK

You've been away from us for a month and a half. Nice to see you Mardon85 again

NVIDIA GeForce RTX 4090 graphics card and DDR5-6400 memory is an excellent set up to test the capabilities of RIFE. It's a bit puzzling that you can't achieve x3 interpolation, especially since if I understood one of your earlier posts correctly, for x2 interpolation the NVIDIA GeForce RTX 3090 graphics card was completely sufficient.

https://www.svp-team.com/forum/viewtopi … 686#p81686

Write more about the test parameters:

1 What is your maximum refresh rate of your monitor or TV set? 100Hz? 120Hz?
2 Are you using G-Sync or FreeSync automatic refresh rate change?
3. Do you use the same settings that earl088 used successfully for x3 interpolation?
https://www.svp-team.com/forum/viewtopi … 799#p81799
4. Do you use the "Hardware-accelerated GPU scheduling OFF" setting that aloola suggests for improved performance?
https://www.svp-team.com/forum/viewtopi … 819#p81819
5. Write something more about the 21:9 4k HDR movie you are testing. Is it a 3840x2160 23.976FPS file with black bars at the bottom and top or does it have a different resolution and FPS?
6. Using the file below, can't you interpolate in real time x3?
LG 4K HDR Demo - New York.ts.
File size: 448 MiB
Duration: 1 min 13 sec
Overall bit rate: 51.4 Mbps
HDR format: SMPTE ST 2086, HDR10 compatible
Width: 3 840 pixels
Height: 2 160 pixels
Frame rate: 25.000 FPS.
Color space: YUV
Chroma subsampling: 4:2:0
Bit depth: 10 bits.

Direct link: https://drive.google.com/file/d/1dfR5TT … _bGfEXUvJ/
Source: http://hdr4k.blogspot.com/

At the moment we need to find a way for you to be able to interpolate 4K HDR x3 in real time like others with NVIDIA GeForce RTX 4090 graphics cards.

If that works, then we'll try x4. I've got some new ideas for performance enhancements that haven't come up here yet for now

Who wants to interpolate 4K HDR videos x5 in real time with RIFE?
Perhaps a more appropriate question is who can afford it?

After reading all the posts on this thread I come to the conclusion that it is possible, and the limitation is not the NVIDIA GeForce RTX 4090 graphics card but the RAM bandwidth.

For someone with unlimited financial resources this is the solution:

ASUS Pro WS W790E-SAGE SE motherboard
Intel Xeon W9-3495X processor
G.SKILL DDR5-6400 CL32-39-39-102 octa-channel R-DIMM memory modules

Source: https://www.gskill.com/community/150223 … erformance

The result?

303.76GB/s read, 227.37 GB/s write, and 257.82 GB/s copy speed in the AIDA64 memory bandwidth benchmark, as seen in the screenshot below:

Source: https://www.gskill.com/community/150223 … erformance

Of course, the Intel Xeon W9-3495X is completely out of my reach....

The cheapest unlocked Intel Xeon would be the W5-2455X at a suggested price of $1039: https://www.anandtech.com/show/18741/in … -5-0-lanes Should be enough. If the current dual-channel DDR5-6000 allows x3 interpolation then the quad-channel DDR5-6400 should be enough for x5 real-time interpolation.

I am looking for someone who has an NVIDIA GeForce RTX 4090 graphics card, at least DDR5-6000 memory and some spare time to test how RIFE real-time interpolation scales at different RAM speeds.

Alternatively, someone who would like to build an HTPC based on quad-channel or octa-channel DDR5-6400 R-DIMM memory. Octa-channel is for the 4K 240Hz screens that will soon go on sale

For me personally, there is no choice other than the RTX 4090. If only for one reason - in passive GPU cooling, die size is the most important factor:

GeForce RTX 4090 has 608.5 mm2
GeForce RTX 4080 has 378.6 mm2

The difference is significant. Here it is not possible, as in active cooling, to control the cooling by adjusting the fan speed.

I will be able to passively cool the GeForce RTX 4090 at around 250W TDP. I need the maximum contact area for heat transport away from the GPU. That is why I am particularly interested in this TDP value.

I suggested to Pezede this kind of testing as I assumed he would not have the option to change GPU, CPU and RAM for testing. This is the simplest test to see how the drop in performance of the various components in the setup affects performance. What can be saved on and what is not worth saving on.

Pezede, what size RAM do you have and how much did the RIFE use when interpolating x3 above 4K HDR video file?

DragonicPrime, what size RAM do you have and how much did the RIFE use when interpolating x2 above 4K HDR video file?

If anyone else manages to pass the above tests without losing frames let us know.

If I have made any mistake in the above post also let me know.

In fact, yes... That's why it's worth testing different configurations. I'm curious to see if anyone else gets a similar effect. However, checking why this happens is unlikely to be easy.

This is puzzling. Apparently it is the mpv that is more efficient....

Better results???

So you are confirming that on your setup you are able to interpolate in real time x2 the file below?

LG 4K HDR Demo - New York.ts.

Recall what CPU you are using and whether the memory frequency is sufficient at 3600 MHz in your case or whether you need 3800 MHz for this test.

And how about the performance of these two methods?