They'll do awesome for sure, been testing the hell outta them and seems like ~615 4-4-4-6 is 100% stable, as is 620 4-5-4-10. Haven't gotten to CAS 5 yet but 650 should be doable. They don't like voltage that much, keep em around 2.5v.

They're also insane at CAS 3 if you ever get the inkling to try that.