12th Generation Intel® Core™ Processors

Datasheet, Volume 1 of 2

ID 655258
Date 08/08/2022
Document Table of Contents

SAGV Points

SAGV (System Agent Geyserville) is a way by which they SoC can dynamically scale the work point (V/F), by applying DVFS (Dynamic Voltage Frequency Scaling) based on memory bandwidth utilization and/or the latency requirement of the various workloads for better energy efficiency at System-Agent. Pcode heuristics are in charge of providing request for Qclock work points by periodically evaluating the utilization of the memory and IA stalls.

SA Speed Enhanced Speed Steps (SA-GV) and Gear Mode Frequencies

Technology

DDR Maximum Rate [MT/s]

SAGV-LowBW

SAGV-MedBW

SAGV-HighBW

SAGV- MaxBW/ lowest latency

S/HX-Processor DDR4 3200 2133 G2 2666 G1 2933 G1 3200 G1
DDR5 1DPC 4800 2000 G2 3600 G2 4400 G2 4800 G2
DDR5 1DPC on 2DPC SODIMM 4000 2000 G2 3600 G2 3600 G2 4000 G2
DDR5 1DPC on 2DPC UDIMM (S only) 4400 2000 G2 3600 G2 4000 G2 4400 G2
DDR5 2DPC 1R/1R 4000 2000 G2 3600 G2 3600 G2 4000 G2
DDR5 2DPC 2R/2R 3600 2000 G2 3200 G2 3200 G2 3600 G2
H-Processor LPDDR4x 4266 2666 G4 3733 G4 4266 G4 4266 G2
LPDDR5 1R/2R 3 5200 2400 G4 4800 G4 5200 G4 5200 G2
LPDDR5 1R/2R 4800 2400 G4 4400 G4 4400 G4 4800 G2
DDR4 3200 2133 G2 2933 G2 3200 G2 2666 G1
DDR5 4800 2000 G2 3600 G2 4400 G2 4800 G2
P/U15-Processor LPDDR4x 4266 2666 G4 3733 G4 4266 G4 4266 G2
LPDDR5 1R/2R3 5200 2400 G4 4800 G4 5200 G4 5200 G2
LPDDR5 1R/2R 4800 2400 G4 4400 G4 4800 G4 4800 G2
DDR4 3200 2133 G2 2933 G2 3200 G2 2666 G1
DDR5 4800 2000 G2 4400 G4 4800 G4 4800 G2
U9-Processor LPDDR4x 4266 2666 G4 3733 G4 4266 G4 4266 G2
LPDDR5 1R/2R 5200 2400 G4 4800 G4 5200 G4 5200 G2
Notes:
  1. 12th Generation Intel® Core™ Processors supports dynamic gearing technology where the Memory Controller can run at 1:1 (Gear-1, Legacy mode) or 1:2 (Gear-2 mode) and 1:4 (Gear-4 mode) ratio of DRAM speed. The gear ratio is the ratio of DRAM speed to Memory Controller Clock.

    MC Channel Width equal to DDR Channel width multiply by Gear Ratio

  2. Type 4 board only.
  3. SAGV is not supported on S 125W Processors.
  4. SA-GV modes
    1. LowBW- Low frequency point, Minimum Power point. Characterized by low power, low BW, high latency. The system will stay at this point during low to moderate BW consumption.
    2. MedBW - Tuned for balance between power & performance
    3. HighBW Characterized by high power, low latency, moderate BW also used as RFI mitigation point.
    4. MaxBW/ lowest latency Lowest Latency point, low BW and highest power.