Sure, two benchmarks are in my signature. Both have RTX 40XX and 30XX cards.

Gid and Roger, thank you for your inputs. Kinda disheartening. I might wait a bit to see if Vegas might correct the 4000 series issues. Based on another forum's posts, I see many Vegas Pro users have left for other NLE systems. This issue and others might be the reason, code writers aren't keeping up and satisfying their users. Sad tho.

I don't see that for RTX- the latest cards are among the best performers in VEGAS in both benchmarks (for the "VEGAS PRO Benchmark Responses" one enable the filter for UHD as that's more challenging. You'll see the 3090 is the top card going up against RX 68XX and 69XX. The VP 20 benchmark is dominated by top NVIDIA cards. My next card will likely be 40XX after prices come down.

The current issue with NVIDIA drivers affects laptops.
AMD driver issues (swapped color channels) were resolved months ago.

Anyway to answer your question I doubt NVIDIA encoding will be significantly faster on the 4090 vs 4080 *unless* you have very GPU intensive FX (noise reduction, AI, etc.) that you are using. The NVENC circuitry is the same on the recent NVIDIA cards and I don't believe VEGAS supports its dual encoders at this time.

I've decided on hardware for a new PC build except the GPU (built around Vegas Pro 18)

I need some expert advice on which GPU to use, RTX 4080 or RTX 4090. Is the 4090 going to render a significant amount in less time?

Davinci Resolve 'GPU Effects" is always a good benchmark to look at, because NLE's need higher bandwidth then games typically. It is why I assume the 4070ti performs so badly here. It's due to a VRAM bandwidth bottleneck. 4080 is much better, I'd get 4090 if I needed the extra Vram for other software.

Todd, thank you for chiming in. Since I am not even considering DaVinci Resolve and will be sticking with Vegas Pro 18, I agree with you regarding the 4090. I will be getting the 4090 in my build. I'll also be updating Vegas Pro to 20 once I set up my computer. The specs on the case say (2) 2.5" drives and (1) 3.5" but I found a way to add (2) more 3.5" drives without modifying the case.

The 4090 seems top be top dog at the moment but I haven't seen posts to the Vegas benchmarks yet from 7900xtx folks. The Amd boards are generally a little smaller and more power efficient.

Just did that VP20 benchmark, 2.09mins, looking at the results the top ones have RAM 5-6000mhz but i've only got 2666mhz,?

Hi Gid, I didn't see a new result- can you submit it? Happy to comment based on the hardware specs based on your test conditions.

Just did that VP20 benchmark, 2.09mins, looking at the results the top ones have RAM 5-6000mhz but i've only got 2666mhz,?

That's cause the top results are using much newer PCs with DDR5 RAM. You have DDR4-2666 MHz RAM.

I think DDR4-3200 MHz is pretty standard and optimal'ish for Intel CPUs (faster is better, but the platform design doesn't really have any special cases) that support DDR4 RAM.

AMD Ryzen users should be shooting for DDR4-3600MHz to optimize Infinity Fabric performance.

The people with DDR5 RAM are likely running 12th or 13th Gen Intel CPUs. Probably i7s or i9s if they're benchmarking and posting results. They likely also have PCIe 4 SSDs and higher end GPUs. Everything about their I/O processing pipeline is likely to outperform yours by a decent margin.

The 4090 seems top be top dog at the moment but I haven't seen posts to the Vegas benchmarks yet yet from 7900xtx folks. The Amd boards are generally a little smaller and more power efficient.

Sometimes the efficiency comes at a cost. Lots of people building workstations will go for Intel + Nvidia because when your GPU is using 250W you aren't really going to fret about the CPU using more, as long as you have suitable thermal management solutions in place.

I do think I wouldn't be able to run anything but the PC in my work room if I were to go with an i9/4090, though. Lol. That breaker loves to trip.

I do prefer a bigger motherboard, though. Anything computer with a 4090 in it isn't going to be a small case, so the size of the MOBO is almost ignorable. I'd prefer a bit more room between components - or room for more QoL (like an additional M.2 slot, for example).

@vegaseditor Hi, there's a benchmark test that shows peoples set ups & times, I'm not sure how many RTX 4000 series are on there but the RTX3000 series didn't do too well, I think if I was to buy a new GPU with Vegas in mind I would consider the RX's for speed, But I've read, in the past anyway, that the RX's can sometimes have problems with the drivers & preview colour, don't know a great deal about that, & like i say the RTX GPU's aren't fully utilised by Vegas @RogerS can point you in the direction of the benchmark test & it's results page.

After my experience with NAVI, I will never touch another AMD GPU again. They have certainly lost me. There will be no redemption. I've already given too many chances.

Switched to a 3070 Ti, and no problems whatsoever.