AMD K6-2 /450 AFX,
其後面 AFX 三個字母各代表
Packet Type, Operating Voltage, Case Temperature 的等級.

Packet Type: A = 321-pin CPGA

Operating Voltage:
F = 2.1 V–2.3 V (Core) / 3.135 V–3.6 V (I/O)
G = 2.2 V–2.4 V (Core) / 3.135 V–3.6 V (I/O)
H = 2.3 V–2.5 V (Core) / 3.135 V–3.6 V (I/O)

Case Temperature:
Q = 0°C–60°C
R = 0°C–70°C
X = 0°C–65°C