WARNING: This Only Applies to WRT54GS v5 Models!
If you have a WRT54G v5 (that you've upgraded to DD-WRT) you can gain some more RAM. By default, only 8MB of RAM is enabled. However, a simple command can enable all 16MB of RAM that your router has. You should notice a performance increase. Again, this is only for WRT54GS v5.x models. Doing this to any other WRT will destroy it.
1. Telnet into your router (read the beginning of this guide for help).
2. Input the following commands:
nvram set sdram_init=0x0A
nvram set nvram_ncdl=0
nvram commit
reboot
nvram set nvram_ncdl=0
nvram commit
reboot
