diff --git a/unit3/unit3.ipynb b/unit3/unit3.ipynb
index d353c5f..e22230b 100644
--- a/unit3/unit3.ipynb
+++ b/unit3/unit3.ipynb
@@ -283,7 +283,7 @@
         "- We train it for 10 million `n_timesteps` \n",
         "- Memory (Experience Replay) size is 100000\n",
         "\n",
-        "💡 My advice is to **reduce the training timesteps to 1M,** if you want to train for 10M timesteps, you should run on your local machine (to avoid Colab timeout) to do that just click on: `File>Download`"
+        "💡 My advice is to **reduce the training timesteps to 1M,** which will take about 90 minutes on a P100. `!nvidia-smi` will tell you what GPU you're using. At 10 million steps, this will take about 9 hours, which could likely result in Colab timing out. I recommend running this on your local computer (or somewhere else). Just click on: `File>Download`. "
       ]
     },
     {