Lenovo Legion 5 Pro with i9 13900HX RTX4060 and 8GB VRAM Exported Video 2x Faster Than ASUS ROG STRIX SCAR 17 With i9 12950HX, RTX 3080Ti + 16GB VRAM

[sbansban]

I have an ASUS ROG STRIX SCAR 17 With i9 12950HX & 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?

 

[johnb35]

My guess would be this difference right here.

12950HX

Total Cores
16
# of Performance-cores
8
# of Efficient-cores
8
Total Threads
24


13900HX

Total Cores
24
# of Performance-cores
8
# of Efficient-cores
16
Total Threads
32

Thats big difference in my book.

 

[sbansban]

Thank you - definitely something to think about. I plan to also use some other video-editing software to perform the exact same operation and check the difference. Maybe also uprez an FHD video to 4K using Topaz Video AI. Another idea is to use the Task Manager / other similar tools to monitor the CPU and GPU usages. Hope to be able to report back my findings.

Video editors use hardware differently - so the same video editor might be better optimized at utilizing the capabilities of one set of hardware than those of the other.

 

[sbansban]

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.

 

[johnb35]

If you would have gotten a better gpu with the lenovo I'm sure your processing time would have been a tad shorter. The system ram doesn't matter too much in this scenario. If you are gonna be doing any heavy video editing then you really want to make sure you have a decent cpu and video card. 32-64gb of ram would be minimum.