I have two modems, and I want to know which one is faster, I have it hooked up to a Cisco Linksys WRT120N (Wi-fi) and here are the modems: RCA DCM305R and Motorola SB5120. Note that I mainly use my internet for online gaming (Xbox Live/Steam) and also for large Youtube videos (20-30 min).
I mean out of the 2 which one is better than the other so I can use it till I buy a new modem. (the 2 on here are the ones I have available)