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Next Generation Intel
Haswell Microarchitecture
Voltage Override Modes
non-turbo
freq
volts
turbo
XE
Fused V/f
non-turbo
freq
volts
turbo
XE
Interpolation V/f
non-turbo
freq
volts
turbo
XE
Offset V/f
non-turbo
freq
volts
turbo
XE
Override V/f
• Default V/f curve
(SVID operation)
• Positive /
Negative offset
applied to the
entire curve.
Important for
mainstream
overclocking.
• Interpolation
(adaptive) in the
overclocking
region
• Override applied
to the entire
curve.
Important for
extreme OC.
iVR provides flexibility consistent with all
margining modes generally supported by
current generation external VR designs