diff --git a/.changelog/16740.txt b/.changelog/16740.txt
new file mode 100644
index 000000000..7d85b5c7b
--- /dev/null
+++ b/.changelog/16740.txt
@@ -0,0 +1,3 @@
+```release-note:improvement
+client/fingerprint: detect fastest cpu core during cpu performance fallback
+```
diff --git a/helper/stats/cpu.go b/helper/stats/cpu.go
index 59cb6d12d..d2754204e 100644
--- a/helper/stats/cpu.go
+++ b/helper/stats/cpu.go
@@ -63,8 +63,9 @@ func Init() error {
 
 			for _, infoStat := range cpuInfoStats {
 				cpuModelName = infoStat.ModelName
-				cpuPowerCoreMHz = uint64(infoStat.Mhz)
-				break
+				if uint64(infoStat.Mhz) > cpuPowerCoreMHz {
+					cpuPowerCoreMHz = uint64(infoStat.Mhz)
+				}
 			}
 
 			// compute ticks using only power core, until we add support for