Gary Explains Intel's CPU Nomenclature!
Basic Format:
Intel Core iX [gen][SKU][Suffix]
Suffix:
K - Unlocked
U - Mobile (Laptop)
H - High Performance Graphics
G - Discrete AMD Vega Graphics
T - Power Optimized
X - Extreme
HK - High Performance Graphics & Unlocked
HQ - High Performance Graphics & Quad Core
Y - Extremely Low power
S - Performance
M - Mobile ; MQ - Mobile Quad Core : MX - Mobile Extreme

Processor Families:
Intel Core: i3, i5 & i7 - Consumer Chips
Intel HEDT: i9 & Extreme Editions
Intel Atom: Network Attachment & Storage
Intel Pentium: Entry level Hyperthreading
Intel Celeron: Entry level No Hyperthreading
Intel Xeon: Server
Intel Itanium: Server
Intel Quark: Microcontroller Chip