Topic: Ask help from the developer: a question about double-video card

[zl29133986]

May I ask a question about double-video card?
I want to buy a assemble computer now.
which video card do you think is better for the LU,
a SLI composed by two GTX560 Ti or a GTX580?
I just want to know if the LU could support the SLI very well.
Please do me a favor .
Thank you very much!

[Remko]

Strangely enough there seems to be little benefit of Lumion and SLI. In theory it should work perfectly since Lumion uses all the guidelines regarding SLI development. Ofcourse the best test is to try it out yourself. There is some benefit of using SLI or Crossfire but it's not twice as fast.

[zl29133986]

I saw your messages on BBS, you mentioned the support level of SLI, which is SLI needs the support from DX11. If so, will the DX11 edition of LU come out? And what’s the maximum EMS memory based on the system I used now (WIN 7, 64bit)?
Another question, which is the decision maker of the speed of drawing， CPU, GPU or EMS memory?
According to your opinion, should I choose 560 SLI, as 560 SLI takes more advantages than 580?

[Remko]

From the NVIDIA SLI guide:

When running on a system with multiple
GPUs configured in SLI mode, simply running your application executable renamed as “AFRFriendlyD3D.exe” will make the driver skip any form of inter-GPU synchronizations, as well as
common forms of CPU-GPU synchronization. This will lead to the maximum expected scaling in
that system, but may introduce rendering artifacts