Question Video Export is 2x faster on 2023 Lenovo Legion 5 Pro than on a more powerful 2022 Asus ROG STRIX SCAR ?

[sbansban]

I have an ASUS ROG STRIX SCAR 17 With i9 12950HX and RTX 3080Ti from 2022 that I have been using for editing my videos. I am trying out a new Lenovo Legion Pro 5 with i9 13900HX & RTX 4060.

The RTX4060 is supposed to be inferior to the 3080 Ti dGPU and the 13th gen i9 is supposedly not much of an improvement over the 12th gen i9. On top of this, the older ASUS ROG has 64GB RAM and 16GB VRAM as opposed to only 32GB RAM and 8GB VRAM on the Lenovo Legion 5 Pro.

I was expecting the 1 generation older ASUS from 2022 to significantly outperform the 2023 Legion 5 Pro.

So I was quite shocked to find that the newer Legion Pro 5 processed a test video at around 120 FPS whereas the 2022 ASUS ROG STRIX SCAR delivered only around 60 FPS and took nearly twice as long (73 seconds vs 37 seconds) to export the same video using the same video editor - and this, even though the slightly older ASUS machine has 64GB RAM & 16GB VRAM whereas the Legion 5 Pro has only 32 GB RAM and 8 GB VRAM.

I used the highest performance mode on both machines. For both, I just imported the same video in the same software and simply exported it without any editing.

The SSD's on both are PCIe 4.0 NVMe M.2.

Could anyone please explain why?

 

[rgd1101]

maybe the software using NVidia new feature?

 

[sbansban]

maybe the software using NVidia new feature?

Yes, that definitely seems to be the case - though cutting the processing time by half is very much unexpected.

I also experimented with Topaz Video AI 4.09 to upscale a different FHD 133-second video (2 minutes 13 seconds) to 4K. The figures are as below:

2022 ASUS Intel i9 12950HX 64GB RAM DDR5-4800 NVIDIA RTX 3080 Ti 16GB VRAM:

878 seconds (14 minutes and 38 seconds)
CPU utilization = 70 to 80%
16 GB VRAM GPU utilization = 50 to 60 to 70 to 80%
64 GB Memory utilization = around 20% (12 to 13 GB)

2023 Lenovo Intel i9 13900HX 32GB RAM DDR5-5600 NVIDIA RTX 4060 8GB VRAM:

662 seconds (11 minutes and 2 soconds)
CPU utilization = 100%
8 GB VRAM GPU utilization = 100%
32 GB Memory utilization = around 36% (11.5 GB)

The results here are closer, but the 2023 Lenovo stil cut down the processing time by around 25%. However, it was at the limit of its CPU and GPU, which tells me that my not skimping on specs when I bought the ASUS end 2022 was probably a good decision.