January 06, 2014, 11:35:15 am
It's should be fine, but at end of day it does depend on what sort of scene you are going to throw at Lumion.
I still use a GTX660 with 2GB that has a Passmark of 4108.
As you know the Passmark, then you can use that as a reference for the guide to scene complexity, see link 1 below.
If you download the current version Lumion Free you will also be able to test how well your system is doing with Lumion.
Attached our most recent (3/1/2014) Benchmark results from licensed users. There's no GTX760's listed, so a comparable would be the GTX660/GTX660 Ti/GTX670 or Radeon 7900 (note the Ti adjusted average would be around 12960).
Does your current system use that card, or are you considering purchasing it?
Please refer further:
1. LUMION 4: Minimum hardware requirements
2. Lumion Web Site: Specifications
3. Passmark: Videocard Benchmarks