Overclock.net › Forums › AMD › AMD CPUs › OC'ing Regor, voltage question
New Posts  All Forums:Forum Nav:

OC'ing Regor, voltage question

post #1 of 4
Thread Starter 
I recently upgraded my junk cooler to a coolermaster 212 (love it btw), and have resumed my foray into overclocking. I've run into a few perplexing situations, and wanted some expert opinions;

1. at 3.3ghz, it runs on stock voltage (1.35v). At 3.45 it required 1.375v. At 3.6ghz it required a big jump up to 4.125v. Is this normal? I expected a more linear voltage progression. (Also, bumped up the Nbridge voltage from 1.25 to 1.275.)

2. Seems that by taking the effective ram speed down is the only way I can achieve stability. For the move from stock at 3ghz to 3.3ghz, I had to drop from 1333 to 1066. From 3.3ghz to 3.6, I had to drop down to the lowest mem settings in my bios (800ish...at work, can't remember exact number). Again, normal?

Any suggestions would be wonderful on further improving my system. Current temps are idle at 19c and full load at 25c, so I feel there is more room to OC the cpu...provided it'll take the juice/oc/whatever. I've kept NB at 1980. If you want more info, I'll do my best to provide.
Blue4u
(10 items)
 
  
Reply
Blue4u
(10 items)
 
  
Reply
post #2 of 4
1. what are you using to test stability? if you run prime95 on blend and get an error it can be due to a number of factors (NB, HT, RAM...) if it fails on small FFTs then you no that the issue is with the cpu OC from there you can try slowly lowering your Vcore.

2. I assume you are OCing via increasing the ref. clock as the Regors have locked multipliers. As a result your ram frequency increases as it is also based off the reference clock. the reason you have had to drop the ram speed is probably because your CPU-NB frequency is too low. Otherwise the North bridge becomes a bottleneck, because both the memory and graphics run through it if the NB is to slow they compete for bandwidth and the system becomes unstable. Usually a CPU-NB frequency of 2000MHz or greater works, though some motherboards are very picky about NB and HT frequencies so you may have try a few combinations before it works. Just what ever you do NEVER set CPU NB or HT greater than your core frequency.
Sandy Thunder
(18 items)
 
QuickSilver X1
(15 items)
 
 
CPUMotherboardGraphicsRAM
i7-3930k C1 4.6GHz @1.344v Sabertooth X79 2x EVGA GTX 560 Ti SC SLI 900/2106 Dominator 1866 16GB 9-10-9-27 
Hard DriveHard DriveCoolingOS
Crucial M4 64GB 'Cuda 320GB XSPC Rasa 750 RX240 push/pull + Alphacool UT60 ... Win 7 Pro x64 
MonitorMonitorMonitorKeyboard
Asus VE198D 19" Samsung 920NW 19" Samsung 906BW 19" Logitech G510s 
PowerCaseMouseMouse Pad
Corsair HX850M Carbide 400R Cyborg M.M.O. 7 Corsair MM200 
AudioOther
Bose Music Monitor Nuforce Icon HDP 
CPUMotherboardGraphicsRAM
Phenom II x6 1090T BE Sabertooth 990FX Radeon HD 5770 1GB Corsair Veangence Blue 
Hard DriveOptical DriveCoolingOS
WD Caviar Black 1TB  Lite ON 16x DVD-R/RW ThermalRight Silver Arrow Windows 7 Professional 64 bit 
MonitorKeyboardPowerCase
Syncmaster 921BW 19" & Syncmaster 965 19" and S... Apple aluminum wired keyboard Corsair TX650 Silverstone TJ05 with window and thermal contro... 
MouseMouse PadAudio
logitech mx air None Monsoon MM-700 
  hide details  
Reply
Sandy Thunder
(18 items)
 
QuickSilver X1
(15 items)
 
 
CPUMotherboardGraphicsRAM
i7-3930k C1 4.6GHz @1.344v Sabertooth X79 2x EVGA GTX 560 Ti SC SLI 900/2106 Dominator 1866 16GB 9-10-9-27 
Hard DriveHard DriveCoolingOS
Crucial M4 64GB 'Cuda 320GB XSPC Rasa 750 RX240 push/pull + Alphacool UT60 ... Win 7 Pro x64 
MonitorMonitorMonitorKeyboard
Asus VE198D 19" Samsung 920NW 19" Samsung 906BW 19" Logitech G510s 
PowerCaseMouseMouse Pad
Corsair HX850M Carbide 400R Cyborg M.M.O. 7 Corsair MM200 
AudioOther
Bose Music Monitor Nuforce Icon HDP 
CPUMotherboardGraphicsRAM
Phenom II x6 1090T BE Sabertooth 990FX Radeon HD 5770 1GB Corsair Veangence Blue 
Hard DriveOptical DriveCoolingOS
WD Caviar Black 1TB  Lite ON 16x DVD-R/RW ThermalRight Silver Arrow Windows 7 Professional 64 bit 
MonitorKeyboardPowerCase
Syncmaster 921BW 19" & Syncmaster 965 19" and S... Apple aluminum wired keyboard Corsair TX650 Silverstone TJ05 with window and thermal contro... 
MouseMouse PadAudio
logitech mx air None Monsoon MM-700 
  hide details  
Reply
post #3 of 4
Thread Starter 
I am using Prime95, and it's not failing tests, it's BSOD.

I will try increasing NB freq and see if that allows me to bring the RAM back up a touch.
Blue4u
(10 items)
 
  
Reply
Blue4u
(10 items)
 
  
Reply
post #4 of 4
Thread Starter 
Cranked the NB from 1980 back up to 2400. it DID allow me to bump the ram up one notch. Thanks for the advice!

+1 rep for the quick and concise help.
Blue4u
(10 items)
 
  
Reply
Blue4u
(10 items)
 
  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › OC'ing Regor, voltage question