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Offset vs Manual Voltage

post #1 of 6
Thread Starter 
Isn't it better to leave the Voltage to "Offset" setting such that then the CPU undervolts when it's not on any load as opposed to fixed Voltage when configured in Manual mode?

I notice that on Offset mode, the voltages goes really high however - Ie. 1.420...etc.
post #2 of 6
offset is almost always the better way to overclock your cpu. This holds true as long as you can get a stable overclock. I personally try to use offset as much as i can until i want to boot up in a suicide run for cpu-z or something.
post #3 of 6
While some people prefer to use offset so that the Vcore lowers when idling (and other power saving features are enabled) to save power, I've found that not much power is saved. For example, using a fixed 1.3V on my sig rig I idle at ~130W (from the wall) if all other power saving features are on. If I switch to using auto voltage (my board doesn't have offset, but auto will reduce the voltage during idle) I idle ~120W.
 
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HTPC
(8 items)
 
 
CPUMotherboardGraphicsRAM
i7-3930k MSI X79MA-GD45 Powercolor 7950 G Skill 
Hard DriveCoolingCoolingCooling
Samsung 830 Swiftech Apogee XT Rev. 1 EK-FC HWLabs Black Ice GTX 240 and a Koolance HX-CU72... 
CoolingCoolingOSOS
MCP 35X and a MCP 350 Koolance 401x2 Opensuse 12.1 Windows 7 
KeyboardPowerCase
Ducky OCN with cherry blues Antec True Power New 650W Cooler Master CM690 II 
CPUMotherboardGraphicsRAM
i5-750 Gigabyte p55-ud2 GTX 430 G Skill 
Hard DriveOSPowerCase
Samsung HD204UI Fedora 15 Corsair CX-430 Silverstone GC04 
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post #4 of 6
Thread Starter 
I'm not too convinced that "Offset" has any benefit - the power saved is small, and doesn't make a difference in $. I'm more concerned about over voltage than necessary as I observed the higher Vcore value when set in Offset. Then of course, some debate that having a fixed Vcore voltage at constant value is a waste of Wattage and decreases the life expectancy of the CPU.

Comments?
post #5 of 6
It sounds like you just didn't set the offset up correctly - you were probably actually in Auto voltage. The voltage you need for stability won't change whether it is offset or fixed, the difference is that the voltage will change at idle. On some boards (specifically Asus) selecting offset without setting a value for the offset is the same as being in Auto, where the board selects the voltage, and that often results in too high a Vcore for a given speed. You need to manually set an offset value for proper offset behavior.
post #6 of 6
Offset > fixed. Go offset.

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