I havent really went for a max with max voltage but they both did what I need at low volts so I was happy. Was gonna try them both for a 4GB run but most say you cant notice a difference so I didn't bother. I looked and looked for a 2GB kit of the OCZ 4000 plats but to no avail. But I am pretty happy with the Mushkins. I would have to agree that these should definately be on the reccomended list.