BSOD with 16G

I put together a rig a while ago, and recently added another 8G to bring me to 16G.

The rig is a 880G giga mobo, with an AMD 1055, 4 sticks 4G of gskill 1333 ripjaws, no GPU and a corsair 400w PSU.

Ever since I added the extra 8G i've been getting sporatic BSODs.

Any recommendations as far as tweaks in the BIOS, currently its set to fail safe defaults? Kinda want to try this route instead of getting a new PSU.

"gskill 1333 ripjaws" doesn't mean much without also posting the SPD timings and voltage at the module's rated frequency. The same goes w/ "The rig is a 880G giga mobo"... Gigabyte released a number of different 880G boards, so we'll need to know the exact model. With 16GB of RAM installed you may need to bump the following voltages...

CPU-NB - 1.30V
HT Link - 1.275V
NB - 1.30V

Sorry redduc, here is some more info on the mobo and ram:

Mobo: GIGABYTE GA-880GA-UD3H AM3 AMD 880G HDMI SATA 6Gb/s USB 3.0 ATX AMD Motherboard
Ram: G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model F3-10666CL9D-8GBRL

Capacity 8GB (2 x 4GB)
Speed DDR3 1333 (PC3 10666)
Cas Latency 9
Timing 9-9-9-24-2N
Voltage 1.5V
ECC No
Buffered/Registered Unbuffered
Multi-channel Kit Dual Channel Kit
Heat Spreader Yes

Went into BIOS to try your recommended adjustments and found there is a limited number of voltage options for my BIOS:
CPU PLL Voltage Control - 2.500v
DRAM Voltage Control - 1.500v
DDR VTT Voltage Control - 0.750v
NB Voltage Control - 1.200v
NB/PCIe/PLL Voltage Control - 1.800v

can go +/- voltage for these settings as well:
CPU NB VID Control - normal
CPU Voltage Control - normal

then a final report:
Normal CPU Vcore - 1.4750v

For HT settings I can adjust the width to 8/16bit and the frequency from 1x to 10x