Remember that if you're going to run heavy plugins (ZP for example), higher server FPS means problems.
For example:
100 FPS => 10ms max processing time for each frame
1000 FPS => 1ms max processing time for each frame
If you don't have the power (more fps doesn't mean more power) to process the whole frame loop withing your plugins (all hooks, callbacks, forwards, etc) then you will have server fps drops.
If your whole frame needs from 0.5ms to 2ms your 1000FPS server will get drops to 500FPS with choke, overflows and lag spikes on client side.
So, you should always take these metrics into account.