diff --git a/audit/internal/webui/pages.go b/audit/internal/webui/pages.go
index cd5df2c..9b75d97 100644
--- a/audit/internal/webui/pages.go
+++ b/audit/internal/webui/pages.go
@@ -1119,6 +1119,22 @@ func renderValidate(opts HandlerOptions) string {
 			`Skipped in Validate mode. Runs in Stress mode only. Runs one GPU at a time.<p id="sat-pt-mode-hint" style="color:var(--warn-fg);font-size:12px;margin:8px 0 0">Only runs in Stress mode. Switch mode above to enable in Run All.</p>`,
 		)) +
 		`</div>` +
+		`<div id="sat-card-nvidia-interconnect">` +
+		renderSATCard("nvidia-interconnect", "NVIDIA Interconnect (NCCL)", "runNvidiaFabricValidate('nvidia-interconnect')", "", renderValidateCardBody(
+			inv.NVIDIA,
+			`Verifies NVLink/NVSwitch fabric bandwidth using NCCL all_reduce_perf across all selected GPUs. Pass/fail based on achieved bandwidth vs. theoretical.`,
+			`<code>all_reduce_perf</code> (NCCL tests)`,
+			`Skipped in Validate mode. Runs in Stress mode only. Runs across all selected GPUs simultaneously (requires ≥2).<p id="sat-ni-mode-hint" style="color:var(--warn-fg);font-size:12px;margin:8px 0 0">Only runs in Stress mode. Switch mode above to enable in Run All.</p>`,
+		)) +
+		`</div>` +
+		`<div id="sat-card-nvidia-bandwidth">` +
+		renderSATCard("nvidia-bandwidth", "NVIDIA Bandwidth (NVBandwidth)", "runNvidiaFabricValidate('nvidia-bandwidth')", "", renderValidateCardBody(
+			inv.NVIDIA,
+			`Validates GPU memory copy and peer-to-peer bandwidth paths using NVBandwidth.`,
+			`<code>nvbandwidth</code>`,
+			`Skipped in Validate mode. Runs in Stress mode only. Runs across all selected GPUs simultaneously.<p id="sat-nb-mode-hint" style="color:var(--warn-fg);font-size:12px;margin:8px 0 0">Only runs in Stress mode. Switch mode above to enable in Run All.</p>`,
+		)) +
+		`</div>` +
 		`</div>
 <div class="grid3" style="margin-top:16px">
 ` + renderSATCard("amd", "AMD GPU", "runAMDValidateSet()", "", renderValidateCardBody(
@@ -1154,6 +1170,8 @@ function satModeChanged() {
     {card: 'sat-card-nvidia-targeted-stress', hint: 'sat-ts-mode-hint'},
     {card: 'sat-card-nvidia-targeted-power',  hint: 'sat-tp-mode-hint'},
     {card: 'sat-card-nvidia-pulse',           hint: 'sat-pt-mode-hint'},
+    {card: 'sat-card-nvidia-interconnect',    hint: 'sat-ni-mode-hint'},
+    {card: 'sat-card-nvidia-bandwidth',       hint: 'sat-nb-mode-hint'},
   ].forEach(function(item) {
     const card = document.getElementById(item.card);
     if (card) {
@@ -1164,7 +1182,7 @@ function satModeChanged() {
   });
 }
 function satLabels() {
-  return {nvidia:'Validate GPU', 'nvidia-targeted-stress':'NVIDIA Targeted Stress (dcgmi diag targeted_stress)', 'nvidia-targeted-power':'NVIDIA Targeted Power (dcgmi diag targeted_power)', 'nvidia-pulse':'NVIDIA Pulse Test (dcgmi diag pulse_test)', memory:'Validate Memory', storage:'Validate Storage', cpu:'Validate CPU', amd:'Validate AMD GPU', 'amd-mem':'AMD GPU MEM Integrity', 'amd-bandwidth':'AMD GPU MEM Bandwidth'};
+  return {nvidia:'Validate GPU', 'nvidia-targeted-stress':'NVIDIA Targeted Stress (dcgmi diag targeted_stress)', 'nvidia-targeted-power':'NVIDIA Targeted Power (dcgmi diag targeted_power)', 'nvidia-pulse':'NVIDIA Pulse Test (dcgmi diag pulse_test)', 'nvidia-interconnect':'NVIDIA Interconnect (NCCL all_reduce_perf)', 'nvidia-bandwidth':'NVIDIA Bandwidth (NVBandwidth)', memory:'Validate Memory', storage:'Validate Storage', cpu:'Validate CPU', amd:'Validate AMD GPU', 'amd-mem':'AMD GPU MEM Integrity', 'amd-bandwidth':'AMD GPU MEM Bandwidth'};
 }
 let satNvidiaGPUsPromise = null;
 function loadSatNvidiaGPUs() {
@@ -1304,7 +1322,16 @@ function runSATWithOverrides(target, overrides) {
     .then(d => streamSATTask(d.task_id, title, false));
 }
 const nvidiaPerGPUTargets = ['nvidia', 'nvidia-targeted-stress', 'nvidia-targeted-power', 'nvidia-pulse'];
+const nvidiaAllGPUTargets = ['nvidia-interconnect', 'nvidia-bandwidth'];
 function expandSATTarget(target) {
+  if (nvidiaAllGPUTargets.indexOf(target) >= 0) {
+    const selected = satSelectedGPUIndices();
+    if (!selected.length) return Promise.reject(new Error('Select at least one NVIDIA GPU.'));
+    return Promise.resolve([{
+      target: target,
+      overrides: {gpu_indices: selected, display_name: satLabels()[target] || target}
+    }]);
+  }
   if (nvidiaPerGPUTargets.indexOf(target) < 0) {
     return Promise.resolve([{target: target}]);
   }
@@ -1321,6 +1348,14 @@ function expandSATTarget(target) {
     label: satGPUDisplayName(gpu)
   })));
 }
+function runNvidiaFabricValidate(target) {
+  const selected = satSelectedGPUIndices();
+  if (!selected.length) {
+    alert('Select at least one NVIDIA GPU.');
+    return;
+  }
+  return runSATWithOverrides(target, {gpu_indices: selected, display_name: satLabels()[target] || target});
+}
 function runNvidiaValidateSet(target) {
   return loadSatNvidiaGPUs().then(gpus => {
     const selected = satSelectedGPUIndices();
@@ -1383,8 +1418,8 @@ function runAllSAT() {
   const cycles = Math.max(1, parseInt(document.getElementById('sat-cycles').value)||1);
   const status = document.getElementById('sat-all-status');
   status.textContent = 'Enqueuing...';
-  const stressOnlyTargets = ['nvidia-targeted-stress', 'nvidia-targeted-power', 'nvidia-pulse'];
-  const baseTargets = ['nvidia','nvidia-targeted-stress','nvidia-targeted-power','nvidia-pulse','memory','storage','cpu'].concat(selectedAMDValidateTargets());
+  const stressOnlyTargets = ['nvidia-targeted-stress', 'nvidia-targeted-power', 'nvidia-pulse', 'nvidia-interconnect', 'nvidia-bandwidth'];
+  const baseTargets = ['nvidia','nvidia-targeted-stress','nvidia-targeted-power','nvidia-pulse','nvidia-interconnect','nvidia-bandwidth','memory','storage','cpu'].concat(selectedAMDValidateTargets());
   const activeTargets = baseTargets.filter(target => {
     if (stressOnlyTargets.indexOf(target) >= 0 && !satStressMode()) return false;
     const btn = document.getElementById('sat-btn-' + target);
@@ -1423,6 +1458,8 @@ fetch('/api/gpu/presence').then(r=>r.json()).then(gp => {
     if (!gp.nvidia) disableSATCard('nvidia-targeted-stress', 'No NVIDIA GPU detected');
     if (!gp.nvidia) disableSATCard('nvidia-targeted-power', 'No NVIDIA GPU detected');
     if (!gp.nvidia) disableSATCard('nvidia-pulse', 'No NVIDIA GPU detected');
+    if (!gp.nvidia) disableSATCard('nvidia-interconnect', 'No NVIDIA GPU detected');
+    if (!gp.nvidia) disableSATCard('nvidia-bandwidth', 'No NVIDIA GPU detected');
     if (!gp.amd) disableSATCard('amd', 'No AMD GPU detected');
     if (!gp.amd) disableSATAMDOptions('No AMD GPU detected');
 });
@@ -2093,14 +2130,6 @@ func renderBurn() string {
 
 <div class="burn-section">GPU-Specific Tests</div>
 <div class="grid2 burn-grid" style="margin-bottom:16px">
-<div class="card burn-card">
-  <div class="card-head card-head-actions"><span>Interconnect / Bandwidth</span><button class="btn btn-primary btn-sm" onclick="runBurnTaskSet([{id:'burn-nvidia-interconnect',target:'nvidia-interconnect',label:'NVIDIA Interconnect Test (NCCL all_reduce_perf)',nvidia:true},{id:'burn-nvidia-bandwidth',target:'nvidia-bandwidth',label:'NVIDIA Bandwidth Test (NVBandwidth)',nvidia:true}])">Run</button></div>
-  <div class="card-body burn-card-body">
-    <p style="font-size:12px;color:var(--muted);margin:0 0 10px">Official NVIDIA fabric paths. NCCL is interconnect-only and is not a compute burn. NVBandwidth validates copy and bandwidth paths.</p>
-    <label class="cb-row"><input type="checkbox" id="burn-nvidia-interconnect" disabled><span>NVIDIA Interconnect Test (NCCL all_reduce_perf) <span class="cb-note" id="note-nvidia-interconnect"></span></span></label>
-    <label class="cb-row"><input type="checkbox" id="burn-nvidia-bandwidth" disabled><span>NVIDIA Bandwidth Test (NVBandwidth) <span class="cb-note" id="note-nvidia-bandwidth"></span></span></label>
-  </div>
-</div>
 </div>
 
 <div id="bi-output" style="display:none;margin-top:16px" class="card">
@@ -2352,8 +2381,6 @@ function runAllBurnTasks() {
   const status = document.getElementById('burn-all-status');
   const all = [
     {id:'burn-nvidia-compute',target:'nvidia-compute',label:'NVIDIA Max Compute Load (dcgmproftester)',nvidia:true},
-    {id:'burn-nvidia-interconnect',target:'nvidia-interconnect',label:'NVIDIA Interconnect Test (NCCL all_reduce_perf)',nvidia:true},
-    {id:'burn-nvidia-bandwidth',target:'nvidia-bandwidth',label:'NVIDIA Bandwidth Test (NVBandwidth)',nvidia:true},
     {id:'burn-gpu-bee',target:'nvidia-stress',label:'GPU Burn (bee-gpu-burn)',nvidia:true,extra:{loader:'builtin'}},
     {id:'burn-gpu-john',target:'nvidia-stress',label:'John GPU Stress (john/OpenCL)',nvidia:true,extra:{loader:'john'}},
     {id:'burn-gpu-rvs',target:'amd-stress',label:'AMD GPU Stress (rvs gst)'},
@@ -2368,8 +2395,6 @@ function runAllBurnTasks() {
 fetch('/api/gpu/tools').then(function(r) { return r.json(); }).then(function(tools) {
   const map = {
     'nvidia-compute': {cb:'burn-nvidia-compute', note:'note-nvidia-compute', reason:'dcgmproftester not available or NVIDIA driver not running'},
-    'nvidia-interconnect': {cb:'burn-nvidia-interconnect', note:'note-nvidia-interconnect', reason:'NCCL interconnect tool not available or NVIDIA driver not running'},
-    'nvidia-bandwidth': {cb:'burn-nvidia-bandwidth', note:'note-nvidia-bandwidth', reason:'nvbandwidth or dcgmi not available or NVIDIA driver not running'},
     'bee-gpu-burn': {cb:'burn-gpu-bee', note:'note-bee', reason:'bee-gpu-burn not available or NVIDIA driver not running'},
     'john': {cb:'burn-gpu-john', note:'note-john', reason:'bee-john-gpu-stress not available or NVIDIA driver not running'},
     'rvs': {cb:'burn-gpu-rvs', note:'note-rvs', reason:'AMD driver not running'},