Hi:
I believe he didn't read you have that PSU.
I haven't got that accelerator, but for the things I've heard, to start I would make two things:
1) Clean the board with a dry brush thoroughly. This is what @delshay told me: "PCB should be free of *All* materials it should be SUPER CLEAN no dust or fiber of hair as it does affect performance and can lead to random crashs,lock-up,data error or fail to boot altogether.
iv discovered this when i increased the bus speed of my card and got random errors,but found the fault to be dust/fiber built-up behind the simm ram chips legs.
i did not see it with the naked eye,only under a micoscope i spotted it and was very difficult to remove. after removing the dust/fiber the card work perfect with no random errors.
NOTE: random errors did not have much of a effect at lower bus speed when the dust/fiber was present.
dust/fiber can be anywhere with-in the computer and is sometimes very hard to spot, but is what i sometimes have to deal with from time to time."
2ยบ) Put a fan over that accelerator. As you have enough power, you can put an Y-cable from where the floppy plugs in on the board to a fan. A cold board is a happy one.