Hello there, new to Unity (well, been lurking for months now), but not new to game programming.
I was looking to create a basic farm scene demo with a log cabin in it, but was curious about what sort of speed issues I might encounter.
Basically, I’m debating between leaving the log cabin low poly, or doing a higher resolution mesh with each log modeled. If I do the later, would there be problems with the frame rate, etc in older computers?
Sorry if it seems a bit elementary, I’ve looked at many fantastic games for Unity, but was curious about the limitations (in both the web player and a downloadable game).
Thanks 
From what I’ve read and learned about optimization so far…
Triangle count only really matters for systems with integrated cards.
If you model the logs independantly you will have to combine them into a single mesh to keep the draw count at 1. You will also have to use a single texture if speed matters and use just one directional light with baked in shadows instead of realtime shadows.
You should see almost no difference in rendering speed between a single meshed 500 triangle log cabin and a 4000 tri log cabin on a system with a graphics card as long as they both only use 1 draw call.
Can’t comment on standalone and web player performance differences but curious myself.