The values you list are not the DDR voltage. Those are timing settings. The
2.5 is CAS latency. To check the voltage, check the BIOS of your motherboard
(see your manual, or the motherboard website). That is also where the
adjustment (if available) will be. Another way the check the voltage is with
Everest Home Edition, which is a free download, and will tell you all kinds
of information about you system. I made no mention of anything "blowing
up"...just crashing (either back to the desktop, or rebooting).

Fitz