Does 8GB of memory require a bigger power supply?? Help.

Ok, so here's my problem / question. I just upgraded ( or so I thought ) my AMD 6000 x 2, Gigabyte MB M55SLI-S4, GS 7600, 500 w power supply from 2 GB of memory to 8 GB. This computer has 3 fans, Liquid cooled CPU, 2 DVD's a 12 in 1 card reader and one 250 gb hard drive. I put the new memory in and the monitor will not turn on with all 4 chips in it, if I remove 2 of them, dropping it to 4 GB the system boots fine in any configuration and switching with all the new XMS.

 

So my question is, do I need more wattage to run the 8GB of XMS2 DHX DDR2 or am I missing something?

 

Any Help Please.

It's unlikely the PSU is the problem as each DIMM only draws about 5 watts. You may need to update your mobo BIOS. It's also worth checking with Gigabyte to be sure there are no issues with this specific mobo/RAM combo as some mobos are RAM sensitive.