AngryGoldfish
Old N Gold
That's the one caveat at being stuck at lower RAM speeds. Your OC will likely work a LOT better. My R7-1700 is a dud unfortunately it seems. Won't even be stable at 3.8Ghz without insane volts. Yet at stock 3-3.2ghz, it just sips voltage, run cool as a cucumber, etc. But the jump to 3.7+ requires such a huge voltage jump that I'm not sure it's worth it.
A lot of the reviewers were easily able to hit 4Ghz on their chips, but that's a lot harder to achieve for the average consumer. Some were able to hit 4.1Ghz as well. That's just not indicative of real world scenarios. Most will top out at around 3.9Ghz, and that's with a good chunk of voltage.