sorry but what about the navigation in octane using both graphic cards for rendering... because when I use octane on my macbook it goes very slow, I'm not surprised about this but I have problems to use the interface too... is it just because I'm using it on my macbook or I will have the same kind ...

last question... :mrgreen: if I have 2 graphic cards can I use both of them for rendering in octane and navigate in Windows at the main time? ....or using photoshop for changing texture in the scene for example...otherwise if i need one of them to use windows it's like I waste one of my graphic card ...

If you want to buy a system specifically geared for use with octane,
i suggest you go to a PC clone shop and get an offer for a clone PC,
with an ASUS motherboard with at least 2 PCI-E 16x slots,
a 750 watt brand cable-management power supply,
and a low-range quad core i7 CPU.

I found a couple of ...

Hey, thank you very much to explain me all those stuff.
One more thing, you said:
newer GTX400 cards with more memory as this is one of the most important things (besides speed) that octane needs,eg video memory so you can render high-res, complex scenes.

...so what about Nvidia Telsa as I know ...

I'm not sure to buy GPU-Xpander it's going to be very expensive....I want start to use octane or other realtime render engines based on GPU but to do that I need to buy a new computer since I've got just a laptop. Can you advice me any computer....I had look at this http://search.dell.co.uk/1/1 ...

Hi guys, I would buy GPU-Xpander for my macbook pro in order to use Octane Render and I wondered if I will able to use graphic cards like GeForce GTX 480 although the only CUDA graphic card for mac is GeForce GTX 285. ( http://www.nvidia.com/object/cuda_gpus.html )

Another question is, how many ...