CPU Voltage Damper Option


The Asus CPU Voltage Damper option in bios when enabled reduces vcore droop under load by alot it seems - ~75% reduction in vcore droop under load when enabled! 1.425v bios set in windows AI Suite reports 1.392-1.400v idle and 1.368v drooped under load by 0.032v. But with CPU Voltage Damper enabled, AI Suite reports 1.4080v idle vcore and 1.400v load vcore - only 0.008v vcore droop! Other bios set vcore options have similar reductions to only 0.008v vcore droop under load when CPU Voltage Damper is enabled

CPU Voltage Damper disabled @1.425v bios set vcore = 2.2857% vcore droop under orthos small FFTs load
CPU Voltage Damper enabled @1.425v bios set vcore = 0.5682% vcore droop under orthos small FFTs load



E6600 B1 ES @3600Mhz - 9x400FSB at 1.416v vcore


Okay to my everyday stable known overclock for my E6600 B1 ES cpu @3600Mhz. The P5K Deluxe handled my E6600 B1 ES much like my P5B Deluxe did needing slightly more vcore (1.416v loaded) to run Orthos stable compared to E6600 B1 ES on Asus P5W DH Deluxe motherboard (~1.38-1.39v vcore loaded).

System
  • E6600 QPGE B1 Step 5
  • Corsair Hydrocool 200EX 1/4" OD tubing
  • Asus P5K Deluxe 0304 bios
  • 128MB Gainward FX5200 PCI
  • 2x1GB Super Talent T1000UB1G5 Singles Micron D9GKX
  • 74GB WD Raptor 8MB on SATA 1 port
  • Pioneer DVR-08 Burner
  • Sony FDD
  • 1KW PCP&C SLI psu
  • WinXP Pro SP2


JumperFree Configuration Settings
AI Overclocking: Manual
CPU Ratio Control: Manual
- Ratio CMOS Setting: 9
FSB Frequency: 400
PCI-E Frequency: 100
DRAM Frequency: DDR2-800 (at 266FSB defaults to 2:3 for AUTO)
DRAM Timing Control: Manual
CAS# Latency: 4
RAS# to CAS# Delay: 4
RAS# Precharge: 4
RAS# Activate to Precharge: 12
TWR: AUTO
TRFC: AUTO
TWTR: AUTO
TRRD: AUTO
TRTP: AUTO
DRAM Static Read Control: Disabled

Transaction Booster: AUTO
Clock Over-Charging Mode: AUTO

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled

CPU Voltage: 1.43750v (1.4240v idle / 1.4160v load)
CPU Voltage Reference: AUTO
CPU Voltage Damper: Enabled
CPU PLL Voltage: 1.50v
DRAM Voltage: 2.10
FSB Termination Voltage: 1.30v
North Bridge Voltage: 1.40v
North Bridge Voltage Reference: AUTO
South Bridge Voltage: AUTO

Advance CPU Settings
CPU Ratio Control: Manual
- Ratio CMOS Setting: 9
C1E Suppport: Disabled
Max CPUID Value Limit: Disabled
Vanderpool Technology: Disabled
CPU TM Function: Disabled
Execute Disable Bit: Disabled
PECI: Enabled

USB Configuration
USB Functions: Enabled
Legacy USB Support: Disabled (need to enable it to detect USB flash drives)
Coretemp temperatures are pretty much same as Asus P5W DH, P5B Deluxe, and Intel D975XBX for 3600Mhz at 1.38-1.42v vcore Orthos loaded around 60-65C in 28.8C to 29.3C room ambient temps.

Load temps:


Post Load idle temps: