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re-overclocking my i7-920 DO stepping.

post #1 of 3
Thread Starter 
This is on my sig rig. I am currently stable @4.0 Ghz running 192*21. I can bump it up to 210*21 and boot into 4.4 with the same voltage but i crash soon afterwards, bumping up the voltage seems to help but not completely fix the problem.

I was wondering if my ram was what was holding me back. I have 12 GB of Patriot Viper DDR3 1333 at 8-8-8-20 timings. I feel like this is where my problem is. What i'm trying to get at is what is the relationship between memory timings and my cpu speed?

I know my memory speed changes when i leave it on auto (auto right now and showing 575.7 MHZ for DRAM Frequency via CPUz) Where should i try to set it to mesh well with a 4.4 Ghz OC?
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I7-920@4.0GHZ Asus P6t Deluxe V2 5970 6 GB Patriot Viper 
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1TB WD Caviar Black LG Blu-Ray Windows 7 Asus VE245 
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Primary Build
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-920@4.0GHZ Asus P6t Deluxe V2 5970 6 GB Patriot Viper 
Hard DriveOptical DriveOSMonitor
1TB WD Caviar Black LG Blu-Ray Windows 7 Asus VE245 
KeyboardPowerCaseMouse
Logitech G15 1000W Antec Silverstone Raven RV01 Cyborg Rat 7 
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post #2 of 3
This will show you the relationship between BCLK, Mem multi and Uncore multi better than anyone can explain.
http://icrontic.com/files/apps/nehalem-calc/

The higher your OC the harder it will be to get stable with 12GB or ram. If you do not need 12GB for some application you are running drop down to 6GB until you can get your OC stable. Also it is easier to get stable if you do not run your ram on auto, but manually set the timings, freq and dram voltage.

Unless you are on water you will probably have a hard time getting a 920 stable over 4.2GHz.
My System
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CPUMotherboardGraphicsRAM
4770K @ 4.7GHz / 4400MHz Asus Sabertooth Z87 Gigabyte GTX 780 OC 8GB G.Skill Trident X 9-11-11-31-1T @ 2400MHz 
Hard DriveOptical DriveCoolingOS
OS SSD 840 Pro 256GB / FSX SSD 840 Pro 256GB LG DVD Thermalright SB-E x2 Win7 Ult 64b 
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My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
4770K @ 4.7GHz / 4400MHz Asus Sabertooth Z87 Gigabyte GTX 780 OC 8GB G.Skill Trident X 9-11-11-31-1T @ 2400MHz 
Hard DriveOptical DriveCoolingOS
OS SSD 840 Pro 256GB / FSX SSD 840 Pro 256GB LG DVD Thermalright SB-E x2 Win7 Ult 64b 
MonitorKeyboardPowerCase
Viewsonic VP2655wb 25.5" IPS LCD Logitech Wireless EX1110 w/Mouse Corsair AX860i CM HAF-X 
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post #3 of 3
Thread Starter 
thanks a lot for the link.
Primary Build
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-920@4.0GHZ Asus P6t Deluxe V2 5970 6 GB Patriot Viper 
Hard DriveOptical DriveOSMonitor
1TB WD Caviar Black LG Blu-Ray Windows 7 Asus VE245 
KeyboardPowerCaseMouse
Logitech G15 1000W Antec Silverstone Raven RV01 Cyborg Rat 7 
  hide details  
Reply
Primary Build
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-920@4.0GHZ Asus P6t Deluxe V2 5970 6 GB Patriot Viper 
Hard DriveOptical DriveOSMonitor
1TB WD Caviar Black LG Blu-Ray Windows 7 Asus VE245 
KeyboardPowerCaseMouse
Logitech G15 1000W Antec Silverstone Raven RV01 Cyborg Rat 7 
  hide details  
Reply
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