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--- ubuntu:gpu:troubleshooting:system_crashes_when_running_a_gpu_intensive_process [2023/06/05 09:08] – created peter
+++ ubuntu:gpu:troubleshooting:system_crashes_when_running_a_gpu_intensive_process [2023/06/05 12:24] (current) – peter
@@ Line 5: / Line 5: @@
   * Many recent GPUs require multiple power cables to be plugged in.
   * Ensure that if a splitter cable is used, that only one of the cables of this splitter is plugged into the GPU.
-    * Ideally
+<WRAP alert>
+**ALERT:**  Do **NOT** use splitter cables to power graphic cards.
+Even though an 8-pin connector can supposedly handle 150W of power, it may not deliver that to the GPU.
+  * It all depends on the overall quality of the power supply in question and the cable being used.
+  * The 150W is from the ATX spec for PSUs; which is followed by virtually all consumer desktop hardware; but not all!
+A single PCIe 8-pin cable and connectors maximum current rating is 12.5A, which is 150W (+12V x 12.5A); Watts = Volts x Amps.
+  * If the wires get too much power, they can melt; or worse, catch fire.
+  * The actual power a cable will and can carry depends on quite a bit more.
+  * This is why it is usually a bad idea to use splitter cables to power graphic cards.
+    * If you have a 400W graphics card, and you are powering it with a splitter; you are sending a whopping 27 Amps down a single set of wires.
+    * That is just asking for trouble as you are leaning very heavily on the quality of your PSU.
+    * **Always use two separate cables whenever possible!!!**
+      * A splitter cable can still be used, but only make use of one of the ends into each connector of the GPU.
+</WRAP>
+----
+===== References =====
+[[Ubuntu:GPU:GPU Power Cable Guide|GPU Power Cable Guide]]