Francois Romieu [mailto:romieu@fr.zoreil.com] 

Sent: Wednesday, October 08, 2014 4:17 AM

[...]

quoted

When enabling the ASPM, it would influence the thrpughput. 
It is hard to
choose performance or power saving. Therefore, we reserve the config
to let the user determines it.

Mmmm...

How do Realtek's devices behave if Config{2, 3} + MISC registers are
configured for ASPM whereas PCI config space registers aren't ?

The feature of the ASPM for the nic would be disabled.
ASPM is enabled when both the internal settings and
the PCI config space registers are enabled.
 
Best Regards,
Hayes