> Even less "quirky" but fully open source designs like GateMate have very poor fmax and utilization in my experience.
The terrible Fmax on GateMate is specifically a result of its "quirky" design. There's no dedicated clock network on the part - clocks have to be routed through fabric just like everything else. Running those signals everywhere consumes routing capacity and incurs delays; the resulting clock skew is awful.
The terrible Fmax on GateMate is specifically a result of its "quirky" design. There's no dedicated clock network on the part - clocks have to be routed through fabric just like everything else. Running those signals everywhere consumes routing capacity and incurs delays; the resulting clock skew is awful.