From de31b7bf5df5af545792cbd9959580827bc19b1b Mon Sep 17 00:00:00 2001
From: PhyxionNL <7643972+PhyxionNL@users.noreply.github.com>
Date: Sun, 26 Apr 2026 19:44:38 +0200
Subject: [PATCH] Fix PTL voltage (#2351)

* Fix PTL voltage

* Formatting
---
 .../Hardware/Cpu/IntelCpu.cs                  | 33 ++++++++++++++++---
 1 file changed, 28 insertions(+), 5 deletions(-)

diff --git a/LibreHardwareMonitorLib/Hardware/Cpu/IntelCpu.cs b/LibreHardwareMonitorLib/Hardware/Cpu/IntelCpu.cs
index 489704d..2545c56 100644
--- a/LibreHardwareMonitorLib/Hardware/Cpu/IntelCpu.cs
+++ b/LibreHardwareMonitorLib/Hardware/Cpu/IntelCpu.cs
@@ -712,17 +712,40 @@ internal sealed class IntelCpu : GenericCpu
             }
         }
 
-        if (_coreVoltage != null && _pawnModule.ReadMsr(IA32_PERF_STATUS, out _, out uint edx))
+        if (_coreVoltage != null && _pawnModule.ReadMsr(IA32_PERF_STATUS, out eax, out uint edx))
         {
-            _coreVoltage.Value = ((edx >> 32) & 0xFFFF) / (float)(1 << 13);
+            uint vidBits = edx & 0xFFFF;        
+            if (vidBits == 0)
+                vidBits = edx & 0xFFFF;
+        
+            if (vidBits > 0)
+            {
+                _coreVoltage.Value = vidBits / 8192.0f;
+            }
+            else
+            {
+                _coreVoltage.Value = 0;
+            }
         }
 
         for (int i = 0; i < _coreVIDs?.Length; i++)
         {
-            if (_pawnModule.ReadMsr(IA32_PERF_STATUS, out _, out edx, _cpuId[i][0].Affinity) && ((edx >> 32) & 0xFFFF) > 0)
+
+            if (_pawnModule.ReadMsr(IA32_PERF_STATUS, out eax, out edx, _cpuId[i][0].Affinity))
             {
-                _coreVIDs[i].Value = ((edx >> 32) & 0xFFFF) / (float)(1 << 13);
-                ActivateSensor(_coreVIDs[i]);
+                uint vidBitsLoop = edx & 0xFFFF;        
+                if (vidBitsLoop == 0)
+                    vidBitsLoop = eax & 0xFFFF;
+        
+                if (vidBitsLoop > 0)
+                {
+                    _coreVIDs[i].Value = vidBitsLoop / 8192.0f;
+                    ActivateSensor(_coreVIDs[i]);
+                }
+                else
+                {
+                    DeactivateSensor(_coreVIDs[i]);
+                }
             }
             else
             {