Hi, dear Blender users.
here is my result from overclocking Nvidia RTX 3080. (model: Plait Gamerock)
although if I don’t recommend overclocking your GPU and use it at your own risk.
but my advice for who want to overclock his/her GPU for Blender is:
as my previous experience until now, memory clock is more important than GPU clock speed.
also, it’s much easier to change. higher GPU clock speed make it easily unstable very soon.
as you can see I got some result as 3080ti with 3080 with simple desktop PC, noting Fany here as liquid GPU cooling, LN2 and thermal past change to LM and so. all things are come from factory and simple.
maybe Nvidia should increase memory clock speed for next generation greatly . that’ll be awesome for Blender.
my PC spec in this benchmark (Case: ColorMaster h500p, fan: ColorMaster prismatic, Ram: Gskill Royal, Power FSP Hydro G 1000w, CPU:12700K GPU:Palit GameRock 3080)
At this time, the highest score on Blender - Open Data is 6270.55.
About 364 is above my benchmark, but I’m very happy that the benchmark score is so good, because it was achieved by a typical factory GPU with air cooling. Even I didn’t use the best desktop CPU in this benchmark. Without anything else, like Liquid Metal and special coolant like LN2 etc. This shows that the process has worked well.
thanks for reading.
General overclocking has always been an option, most use MSI Afterburner to do some basic tweaks, but one can dive a lot deeper if you want to.
Thing is, the result can vary a lot, from silicon lottery to cooling solution to just how well the factory applied paste and pads are. Someone else could have the exact same card as you and apply the same settings, but end up with a totally unstable system, just luck of the draw.
One thing you aren’t looking at with these new, higher numbers is the increase in power usage. Usually while it’s always been possible to push the numbers up a bit, that last extra 5% or so tends to result in a lot more power draw. Which unless the power happens to be free, largely just isn’t worth it.
Personally I’ve more so underclocked my 3080 Ti, so that while I lose a little performance compared to stock, it’s not all that much, while I drop power usage by 50W.
Yeap, Agree and I know. silicon lottery. maybe someone else with the same system spec could reach higher and lower.
but I wanted to mention that for the Blender render memory clock is more important.
From my experience memory overclocking nets the biggest boost without affecting the power consumption too much. Also, you could look into the fan settings. Balancing the fan curve could stabilize the core clocks and net a nice improvement over the prolonged render session.
Some brands program their cards to prioritize acoustics over temperature. During rendering the card may hit periods when it is no longer actively cooled and the clock speed drops. It takes quite a bit of time before the fans fire up again and bring the temperature down/clocks up. The card does not have to be screaming all the time, just have stable cooling throughout the render process.
. that’ll be awesome for Blender.
