diff --git a/internal/metrics/metrics.go b/internal/metrics/metrics.go
index 80a9af3..b964c80 100644
--- a/internal/metrics/metrics.go
+++ b/internal/metrics/metrics.go
@@ -888,21 +888,22 @@ func uidName(uid string) string {
 
 // ProcTable is the Processes tab payload.
 type ProcTable struct {
-	T        int64      `json:"t"`
-	CPU      float64    `json:"cpu"`
-	Cores    []float64  `json:"cores"`
-	CPUHist  []float64  `json:"cpu_hist"` // recent total-CPU samples, oldest first
-	CPUModel string     `json:"cpu_model,omitempty"`
-	CPUMHz   float64    `json:"cpu_mhz,omitempty"`
-	CPUTemp  float64    `json:"cpu_temp,omitempty"`
-	Load     [3]float64 `json:"load"`
-	Mem      Mem        `json:"mem"`
-	Swap     Mem        `json:"swap"`
-	Net      []Net      `json:"net"`
-	Uptime   float64    `json:"uptime"`
-	Procs    []Proc     `json:"procs"`
-	Total    int        `json:"total"`
-	Running  int        `json:"running"`
+	T         int64      `json:"t"`
+	CPU       float64    `json:"cpu"`
+	Cores     []float64  `json:"cores"`
+	CPUHist   []float64  `json:"cpu_hist"` // recent total-CPU samples, oldest first
+	CPUModel  string     `json:"cpu_model,omitempty"`
+	CPUMHz    float64    `json:"cpu_mhz,omitempty"`
+	CPUMaxMHz float64    `json:"cpu_max_mhz,omitempty"`
+	CPUTemp   float64    `json:"cpu_temp,omitempty"`
+	Load      [3]float64 `json:"load"`
+	Mem       Mem        `json:"mem"`
+	Swap      Mem        `json:"swap"`
+	Net       []Net      `json:"net"`
+	Uptime    float64    `json:"uptime"`
+	Procs     []Proc     `json:"procs"`
+	Total     int        `json:"total"`
+	Running   int        `json:"running"`
 }
 
 var cpuModel = func() string {
@@ -916,6 +917,13 @@ var cpuModel = func() string {
 	return ""
 }()
 
+var cpuMaxMHz = func() float64 {
+	if v, ok := readInt("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq"); ok {
+		return float64(v) / 1000
+	}
+	return 0
+}()
+
 func cpuMHz() float64 {
 	var sum float64
 	n := 0
@@ -1055,7 +1063,7 @@ func (c *Collector) Processes() ProcTable {
 		return procs[i].RSS > procs[j].RSS
 	})
 	t := ProcTable{T: now.UnixMilli(), Procs: procs, Total: len(procs), Uptime: uptime(), Load: loadavg(),
-		CPUModel: cpuModel, CPUMHz: round1(cpuMHz()), CPUHist: []float64{}, Net: []Net{}}
+		CPUModel: cpuModel, CPUMHz: round1(cpuMHz()), CPUMaxMHz: cpuMaxMHz, CPUHist: []float64{}, Net: []Net{}}
 	for _, p := range procs {
 		if p.State == "R" {
 			t.Running++
diff --git a/web/src/Procs.tsx b/web/src/Procs.tsx
index 5c4236f..30fae14 100644
--- a/web/src/Procs.tsx
+++ b/web/src/Procs.tsx
@@ -86,7 +86,7 @@ export default function Procs() {
   return (
     <div className="procs-page">
       {showTop && <div className="procs-top">
-        <Box title="cpu" right={`${t.cpu_model ?? ''}${t.cpu_mhz ? ` · ${(t.cpu_mhz / 1000).toFixed(2)} GHz` : ''}${t.cpu_temp ? ` · ${t.cpu_temp.toFixed(0)}°C` : ''}`}>
+        <Box title="cpu" right={`${t.cpu_model ?? ''}${t.cpu_mhz ? ` · ${(t.cpu_mhz / 1000).toFixed(2)}${t.cpu_max_mhz ? ` / ${(t.cpu_max_mhz / 1000).toFixed(1)}` : ''} GHz` : ''}${t.cpu_temp ? ` · ${t.cpu_temp.toFixed(0)}°C` : ''}`}>
           <div className="cpu-total">
             <Graph values={t.cpu_hist} />
             <div className="cpu-total-v"><span className="bl">CPU</span><span className="bv big">{pct(t.cpu)}</span><span className="muted small">total, all cores</span></div>
diff --git a/web/src/api.ts b/web/src/api.ts
index aa5088a..e91d47f 100644
--- a/web/src/api.ts
+++ b/web/src/api.ts
@@ -42,7 +42,7 @@ export interface FS { mount: string; type: string; size: number; used: number }
 export interface UPS { driver: string; model: string; state: string; source: string; on_battery: boolean; in_v: number; out_v: number; battery_pct: number; runtime_min: number; load_w: number; load_pct: number; last_event?: string }
 export interface Proc { pid: number; ppid: number; name: string; cmd?: string; user: string; cpu: number; cpu_time: number; rss: number; threads: number; state: string; nice: number; started: number }
 export interface MemInfo { total: number; used: number; avail: number; free?: number; cached?: number; buffers?: number }
-export interface ProcTable { t: number; cpu: number; cores: number[]; cpu_hist: number[]; cpu_model?: string; cpu_mhz?: number; cpu_temp?: number; load: [number, number, number]; mem: MemInfo; swap: MemInfo; net: NetIf[]; uptime: number; procs: Proc[]; total: number; running: number }
+export interface ProcTable { t: number; cpu: number; cores: number[]; cpu_hist: number[]; cpu_model?: string; cpu_mhz?: number; cpu_max_mhz?: number; cpu_temp?: number; load: [number, number, number]; mem: MemInfo; swap: MemInfo; net: NetIf[]; uptime: number; procs: Proc[]; total: number; running: number }
 export interface Sample {
   t: number; interval_ms: number; cpu: number; cores: number[]; load: [number, number, number]
   mem: { total: number; used: number; avail: number }; swap: { total: number; used: number; avail: number }