just installed 4080's

[s_gru]

just installed 2 msi 4080 gaming x (though one does not have the designation of "x" not sure what that's about? - they have different bios according to MSI afterburner). any tips on on tuning these? i have the latest nvidia studio drivers, vray 6.x, vantage 1.8.4. i'm replacing 4 1080ti liquid cooled cards. vray benchmark is different for cuda 1080s but what i'm seeing is ~3x the performance increase. i'm noticing that renders seem to go faster but the time to prep-the scene or frame seems to take a while (compiling kernals/loading bitmaps/ etc). i also get a lot of hang ups using windows (typing for example) between each frame.

have not tried animation in vantage yet, but it seems better but not "instant".

yeah the rest of the PC slowing down is not the same when i had the 1080ti's. the 1080ti's only slowed the PC down on initial render but now it's before every frame. interesting. unless there's a tweak somewhere.

64GB ram | xeon e5-2630 v2 @2.4Gz | windows 10 Enterprise

anyway, thought i'd ask if anyone had any tips or tweaks or settings to look at to optimize. thanks!

[s_gru]

tried an animation in vantage. with 800 (passes?) it was giving me 4 frames per minute. despite the bog down of the PC the vray production render looked like it was going to give me 2hrs or so for a 160 frame animation that before was estimating 4-5hrs. so both big improvements. i'll have to look at something that can keep me working while rendering animations on another PC with the same cards perhaps.

[Muhammed_Hamed]

64GB ram | xeon e5-2630 v2 @2.4Gz | windows 10 Enterprise

Hello,

Time to upgrade that, it is holding your GPUs back
In our testing we saw 12% performance boost for GPUs when equipped with new CPUs like the 7950X and PCIe Gen4/5
We compared to a Threadripper 3990X in this testing, so expect the gap to be bigger with your 10-year old CPU

(though one does not have the designation of "x" not sure what that's about?

Gaming X cards has higher TDP and slightly higher specs than Gaming, nothing major here

i'm noticing that renders seem to go faster but the time to prep-the scene or frame seems to take a while (compiling kernals/loading bitmaps/ etc)

Yeah, we are working on improving this now. Best is to have one GPU per frame for rendering animations

i also get a lot of hang ups using windows (typing for example) between each frame.

It is about your CPU/memory not the GPUs
It should be fixable

Best,
Muhammed

[s_gru]

well. i'm stuck with the old slot in the asus x99e ws board. i do have 40 lanes for pci express tho. i was thinking about a home build

• Asus Pro WS W790-ACE
• intel 2400 or 3400 (i'm seeing 3400 series have 64+ pcie lanes)
• 2 RTX 4090s for now (msi or asus flavor but not liquid cooled, out of stock everywhere)

i also thought i found something abotu 3400 series xeons being better for a specific reason when it comes maxing out pcie lanes?