Octane PC Build Help

[Banti]

I am planning to build a PC for Octane rendering exclusively. Currently I have:

1) One Acer Predator Helios 300 Notebook (2060 RTX with 6GB VRAM). This is my main rendering machine at the moment because of the RTX acceleration.
2) One stationary PC i dont really use much with the following specs: Ryzen 5 1600, GTX 1070 8GB, 32GB RAM

Since my Octane license allows my to use 2 GPUs and i have around 1000€ to spend on this, my first though was getting 2 RTX 2070 super. But i now that the new RTX 3000 series should come this fall and i am not really sure what to do. Should i buy 2 new RTX 2070 super, or maybe wait for RTX 3000 (which a probably can only afford 1 card and maybe a new CPU?). Or something completly different?

Anyway, i was hoping someone can help me deciding on what to do with the money to get the most effective rendering performance out of it. Thanks

[nejck]

Tough question, for sure

I am personally waiting for the 3xxx series but I am doing that because I feel comfortable with the rendering power I already have. If there is a need for more then I'll go shopping right away. I suppose that could apply to you as well?

Another thing to consider is that given that Big Navi from AMD is also slated to launch in late 2020 it is possible Nvidia is again going to go the route of releasing their high end GPUs first with the rest of the lineup following early next year possibly.

Now given the (long standing) speculation that Big Navi is going to be faster than a 2080ti I do think that the 3xxx series are potentially going to see a fair increase in speed - plus another round of RTX updates and I think there should be sizeable gains there for rendering. Don't think its safe to assume super gains but at least a somewhat normal generational increase is probably in order.

As far as the price, given that we expect AMD to be in the race I'm wildly speculating that the prices will probably stay the same but the performance on a per GPU comparison will be higher.

So yeah, didn't help you much there with all the speculation

I suppose the main question is, do you need the firepower right now or can you hold out for another 6 months or so? I think that's the safest way to make decisions right now.

[james_conkle]

Have you run Octane bench on both computers? I’d be surprised if your laptop was faster than your desktop even though it has the newer card. If I were you I’d look into adding a second 1070 from eBay or similar. Used they go for pretty cheap so if you only get a year out of it not much loss but it’ll double your speed.

[Banti]

Have you run Octane bench on both computers? I’d be surprised if your laptop was faster than your desktop even though it has the newer card. If I were you I’d look into adding a second 1070 from eBay or similar. Used they go for pretty cheap so if you only get a year out of it not much loss but it’ll double your speed.

I did do speed comparison test between my two computers and to my surprise back then, the RTX 2060 (laptop gpu) is somewhat faster than my desktop gtx 1070 gpu. When i turned off the RTX acceleration they where about equally fast. So i think my scenes profit heavily from the RTX acceleration which is why i want to add a RTX card. I definitly have to buy a new Mobo but i dont now ih my Ryzen 5 1600 CPU is good enough for 2GPU system. Is CPU speed important when it comes to Octane or multi GPU systems in general?

Edit: I just got a refurbished 1080TI for 250€ from Ebay so the only think left for me to know is how important is the CPUs PCIe support. My ryzen has 20 max lanes i think. Will this slow down the cards heavily?