claim: Jefferson Davis grew up in the United States.
evidence: Zen 2 is the codename for AMD 's eventual Zen successor -LRB- initially called Zen + -RRB- .. AMD. AMD. Zen. Zen ( microarchitecture ). codename. codename. Zen 2 is expected to bring a slight increase in instructions per clock over Zen , but not nearly as large as the jump from Excavator to Zen .. Zen. Zen ( microarchitecture ). instructions per clock. instructions per clock. Excavator. Excavator ( microarchitecture )