X48 Rampage Formula Preview.

[Alien Grey]

My new 24/7 Overclock.

Running Prime95 Custom using 3200Mb Memory with Wine in Ubuntu at 4.22GHz and DDR 1250MHz with tRD 6 and tREF 16120T.







It should be stable enough I think to run BOINC\seti@home in Ubuntu.



BIOS Settings:

*Extreme Tweaker* 
Ai Overclock Tuner               [Manual] 
OC From CPU Level Up             [Auto] 
CPU Ratio Setting                [09.0] 
FSB Strap to North Bridge        [400] 
FSB Frequency                    [469] 
PCIE Frequency                   [100] 

DRAM Frequency                   [DDR2-1250MHz] 
DRAM Command Rate                [2N] 
DRAM CMD Skew on Channal A       [Greyed Out] 
DRAM CMD Skew on Channal B       [Greyed Out] 
DRAM CLK Skew on Channal A       [Auto] 
DRAM CLK Skew on Channal B       [Auto] 

DRAM Timing Control              [Manual] 
 1st Information 
  CAS# Latency                   [5] 	
  RAS# to CAS# Delay             [5] 	
  RAS# PRE Time                  [5] 	
  RAS# ACT Time                  [15] 	
  RAS# to RAS# Delay             [5] 
  REF Cycle Time                 [Auto (52)] 
  WRITE Recovery Time            [12] 	
  READ to PRE Time               [6] 
 2nd Information 
  READ to WRITE Delay (S/D)      [8] 
  WRITE to READ Delay (S)        [6] 
  WRITE to READ Delay (D)        [6] 
  READ to READ Delay (S)         [4] 
  READ to READ Delay (D)         [7] 
  WRITE to WRITE Delay (S)       [4] 
  WRITE to WRITE Delay (D)       [7] 
 3rd Information 
  WRITE to PRE Delay             [23]	
  READ to PRE Delay              [8] 	
  PRE to PRE Delay               [1] 	
  ALL PRE to ACT Delay           [6] 	
  ALL PRE to REF Delay           [6] 
  Refresh Period		 [16120T]

DRAM Static Read Control         [Disabled] 
Ai Clock Twister                 [Lighter] 
Ai Transaction Booster           [06] 		
Pull-in of CHA PH1	         [Disabled]	
Pull-in of CHA PH2	         [Disabled]	
Pull-in of CHA PH3	         [Disabled]	
Pull-in of CHA PH4	         [Disabled]	
Pull-in of CHB PH1	         [Disabled]	
Pull-in of CHB PH2	         [Disabled]	
Pull-in of CHB PH3	         [Disabled]	
Pull-in of CHB PH4	         [Disabled]	
CPU Voltage                      [1.36250v] 
CPU PLL Voltage                  [1.50v] 
North Bridge Voltage             [1.39v] 
DRAM Voltage                     [1.92v] 
FSB Termination Voltage          [1.30v] 
South Bridge Voltage             [1.05v] 
SB 1,5V Voltage                  [1.50v] 
Loadline Calibration             [Disabled] 
CPU GTL Voltage Reference        [0.63x] 
NB GTL Voltage Reference         [0.67x] 
DRAM Controller Voltage REF      [AUTO] 
DRAM Channel A Voltage REF       [AUTO] 
DRAM Channel B Voltage REF       [AUTO] 

CPU LED Selection                [CPU Voltage] 
NB LED Selection                 [North Bridge Voltage] 
SB LED Selection                 [South Bridge Voltage] 
Voltiminder LED                  [Enabled] 

CPU Spread Spectrum              [Disabled] 
PCIE Spred Spectrum              [Disabled] 
Cpu Clock Skew		         [Delay 300ps]
NB Clock Skew		         [Delay 200ps]

*CPU Settings* 

CPU Ratio Settings	         [09.0]
C1E Support	                 [Disabled]
CPU TM Function	                 [Enabled]
Vanderpool Technology            [Disabled]
Execute Disabled Bit	         [Enabled]
Max CPUID Value Limit            [Disabled]

Relaxing the timings with using the Rampage Extreme Memory timings makes it 24/7 stable with CPU Clock Skew Delay 300ps and NB Clock Skew Delay 200ps.

It isn't necessary anymore to make a 50ps difference between DRAM Channel A and B with the more relaxed timings and it's working fine with Auto settings.

With the Rampage Extreme Memory timings it's stable with less CPU Voltage and NB Voltage with CPU Clock Skew Delay 300ps and NB Clock Skew Delay 200ps.



Thanks a lot SoLoR for sharing this fantastic MOD BIOS. You made the impossible possible.