System won't boot with 8 pin connected but will with 4 pin

Hello,
I just completed a new build using the following:
ASROCK 970 EXTREME 4 AM3 ATX Mobo
AMD PHENOM II X6 1045T AM3 CPU
GIGABYTE **HD6450 1GB D3 PCIE DVH Graphics Card
CRUCIAL 8GB 4X2 D3 1600 DIMM CL9 Memory
ANTEC EA500D ATX PSU

The PSU has a 6+2 connector for the 8 pin CPU supply. When that is connected, I get nothing when trying to boot. If I remove it and use one of the 4 pins in that same connector (using the 4 sockets that weren't covered) the system boots and runs fine. With this CPU, it doesn't appear I need the 8 pin supply but I'm still trying to figure out what is going on.

Thanks,
5 answers Last reply
More about system boot connected
  1. 6+2? That should be for the graphics card. There should be an 8-pin or 2 4-pins.

    On the 500D, they are labeled as "P2"
  2. There is no 8 pin but there are 2 - 4 Pins.

    Thank you for the help, there was nothing in the manual that reflected doubling up the 4 pins. I really appreciate the help!
  3. Are you using the 2 4-pins now? That should do the trick.
  4. Yes, I added the other 4 pin connector and all is good. Thank you!
  5. No problem :)
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