June 25, 2015, 07:56:51 am
1. Question 2.2: how many 3D Points in Movie Mode
(top right of screen) for one of your clips. This figure will be different than in Build Mode as certain Movie effects add to the count.
2. System RAM.
Free lumion 5.3
you mean Educational Student Edition V5.3 right?
4. And your sure the Ti has 2GB and not 4GB (most were 2 but some models went up to maximum of 4GB)?
The 3D Points and number of lights is not extreme for your 750 Ti (caveat: scene not reviewed first hand).
Most of the work (90%) is done on the GPU for Lumion. Upgrading a CPU is useful if it is slowing the rest of the system.
So long as the CPU (and RAM) do not bottleneck the data from the GPU then they can be retained. The current i7 (and RAM) is unlikely to bottleneck the GTX 750 Ti. But would for a GTX 980. That means you would not get the absolute maximum benefit from something like a GTX 980. A complete new system is the only way to achieve that.
A GTX 960 is not that much more of a performance gain over the GTX 750Ti, it's just newer, and only has 2GB of VRAM.
The i7-920 will have an LGA1366 socket, i7-4790K series have different sockets such as LGA1150, so you would also require a new motherboard, which also means new RAM
5. Have you followed our suggestions re the Sticky, especially setting the 512 Limit for textures?
If you're keen on upgrading, then, ignoring the other things to help in managing a project, upgrading the card would be the better option of the two you mention. Ensure your power supply is up to it if you choose to do either option.
Please note that the above does not mean that I or Act-3D endorse specific products. We are unable to offer any guarantees regarding the expected performance in Lumion with the above-mentioned hardware, and you cannot hold us liable for any costs or damages incurred if you purchase hardware based on our posts on this forum or via email.