Originally Posted by KCDC
OC Scanner would just lock up on my dual 1080tis, so I stopped trying. Maybe it was a dual card thing, not sure about that.
My constant for both is 2100 47c-50c max when OCing, tends to get unstable past 2115 so I just kept it there. When rendering they stay around 1980 @ 40c max with OC turned off. Wondering if adding a third 420 GTR and second pump will do anything for me temp-wise. Water gets up to about 37c with all fans at full tilt and ambient around 28c when rendering over time. Gets a bit annoying hearing the fans while trying to do work and my render viewport updating. Haven't done much in particle sims with the GPUs yet, can't seem to get real flow to use both cards, curious to see if it's any faster than using the 9900x.
OC Scanner doesn't work with multiple GPUs, this I can only confirm, personally running 4*GPUs(Asus RTX 2080Ti Strix, GTX1080Ti, GTX1080 and GTX1080) and OC Scanner would lock up when I use with Asus RTX 2080Ti Strix or any other GPU
Regarding the rendering with RTX 2080Ti, I use my GPUs for rendering mainly with some occasional gaming and benching
What I can confirm, in Octane RTX 2080Ti would be unstable beyond 2055MHz,usually I use in rendering 2025MHz OC profile which is rock stable, tried several renderers like V-RAY Next, Redshift, Blender Cycles or DAZ3D IRAY etc where anything above 2055MHz would crash rendering or result in TDR, tried several drivers, I thought so its driver issue, my RTX 2080Ti temperatures are below 40's in rendering usually sits in 36-38°C as other GPU
What is more strange my other GPUs are running same OC(GTX1080Ti with 2113MHz OC, GTX1080 with 2164MHz and GTX1080 with 2100MHz OC) from day one and if I render or use these cards in rendering no issues with crashing or TDR, previously I used two PSU setup(Seasonic 1250w and Corsair RM750W) and I thought its PSU, due this I went with Superflower 2000W PSU(bought from a friend)
Water temperature will have impact on overall temperatures and if you have space for 420mm radiator I would add it, you will have lower water delta T for sure, my loop have 4*360mm radiators plus MO-ra3 360mm and my water delta T in rendering is in 3-5°C as max with fans spinning at 900RPM as max(that's on MO-ra3 360mm), other fans are spinning at 750-800RPM
Particle simulation,personally don't use a lot particle simulation, if I do then I use Houdini, what software or plugin are you using for particle sims?
Hope this helps