diff --git a/x86_64/corefreqk.h b/x86_64/corefreqk.h
index 019a1dab..cf4e56ba 100644
--- a/x86_64/corefreqk.h
+++ b/x86_64/corefreqk.h
@@ -9596,7 +9596,7 @@ static ARCH Arch[ARCHITECTURES] = {
 	.ClockMod = ClockMod_SandyBridge_PPC,
 	.TurboClock = Intel_Turbo_Config8C,
 	.thermalFormula = THERMAL_FORMULA_INTEL,
-	.voltageFormula = VOLTAGE_FORMULA_INTEL_SOC,
+	.voltageFormula = VOLTAGE_FORMULA_INTEL_SNB,
 	.powerFormula   = POWER_FORMULA_INTEL_ATOM,
 	.PCI_ids = PCI_Void_ids,
 	.Uncore = {
@@ -10690,7 +10690,7 @@ static ARCH Arch[ARCHITECTURES] = {
 	.ClockMod = ClockMod_SandyBridge_PPC,
 	.TurboClock = Intel_Turbo_Config8C,
 	.thermalFormula = THERMAL_FORMULA_INTEL,
-	.voltageFormula = VOLTAGE_FORMULA_INTEL_SOC,
+	.voltageFormula = VOLTAGE_FORMULA_INTEL_SNB,
 	.powerFormula   = POWER_FORMULA_INTEL_ATOM,
 	.PCI_ids = PCI_Void_ids,
 	.Uncore = {