diff --git a/public/include/config/admin_settings.inc.php b/public/include/config/admin_settings.inc.php
index 178e90a6..07d41405 100644
--- a/public/include/config/admin_settings.inc.php
+++ b/public/include/config/admin_settings.inc.php
@@ -102,6 +102,13 @@ $aSettings['statistics'][] = array(
   'name' => 'statistics_ajax_refresh_interval', 'value' => $setting->getValue('statistics_ajax_refresh_interval'),
   'tooltip' => 'How often to refresh data via ajax in seconds.'
 );
+$aSettings['statistics'][] = array(
+  'display' => 'Ajax Data Interval', 'type' => 'select',
+  'options' => array('60' => '1', '300' => '5', '600' => '10'),
+  'default' => 300,
+  'name' => 'statistics_ajax_data_interval', 'value' => $setting->getValue('statistics_ajax_data_interval'),
+  'tooltip' => 'Time in minutes, interval for hashrate and sharerate calculations. Higher intervals allow for better accuracy at a higer server load.'
+);
 $aSettings['statistics'][] = array(
   'display' => 'Block Statistics Count', 'type' => 'text',
   'size' => 25,
diff --git a/public/include/pages/api/getdashboarddata.inc.php b/public/include/pages/api/getdashboarddata.inc.php
index a36b4bb2..4d8fef48 100644
--- a/public/include/pages/api/getdashboarddata.inc.php
+++ b/public/include/pages/api/getdashboarddata.inc.php
@@ -36,7 +36,7 @@ $bitcoin->can_connect() === true ? $dNetworkHashrate = $bitcoin->query('getnetwo
 
 // Some settings
 $start = microtime(true);
-$interval = 300;
+if ( ! $interval = $setting->getValue('statistics_ajax_data_interval')) $interval = 300;
 if ( ! $dPoolHashrateModifier = $setting->getValue('statistics_pool_hashrate_modifier') ) $dPoolHashrateModifier = 1;
 if ( ! $dPersonalHashrateModifier = $setting->getValue('statistics_personal_hashrate_modifier') ) $dPersonalHashrateModifier = 1;
 if ( ! $dNetworkHashrateModifier = $setting->getValue('statistics_network_hashrate_modifier') ) $dNetworkHashrateModifier = 1;
diff --git a/public/include/pages/dashboard.inc.php b/public/include/pages/dashboard.inc.php
index 5ab39251..22a4edec 100644
--- a/public/include/pages/dashboard.inc.php
+++ b/public/include/pages/dashboard.inc.php
@@ -4,6 +4,7 @@
 if (!defined('SECURITY')) die('Hacking attempt');
 
 if ($user->isAuthenticated()) {
+  if (! $interval = $setting->getValue('statistics_ajax_data_interval')) $interval = 300;
   // Defaults to get rid of PHP Notice warnings
   $dDifficulty = 1;
   $aRoundShares = 1;
@@ -42,6 +43,7 @@ if ($user->isAuthenticated()) {
   if ($iCurrentPoolHashrate > $dNetworkHashrate) $dNetworkHashrate = $iCurrentPoolHashrate;
 
   // Make it available in Smarty
+  $smarty->assign('INTERVAL', $interval / 60);
   $smarty->assign('CONTENT', 'default.tpl');
 }
 
diff --git a/public/templates/test/dashboard/gauges.tpl b/public/templates/test/dashboard/gauges.tpl
index 6bdc6723..210b4228 100644
--- a/public/templates/test/dashboard/gauges.tpl
+++ b/public/templates/test/dashboard/gauges.tpl
@@ -9,7 +9,7 @@
       <div id="querytime" style="width:150px; height:120px; float: left;"></div>
     </div>
   </div>
-  <footer><p style="margin-left: 25px">Refresh interval: {$GLOBAL.config.statistics_ajax_refresh_interval|default:"10"} seconds</p></footer>
+  <footer><p style="margin-left: 25px">Refresh interval: {$GLOBAL.config.statistics_ajax_refresh_interval|default:"10"} seconds. Hashrate based on shares submitted in the past {$INTERVAL|default:"5"} minutes.</p></footer>
 </article>
 
 <script>