Ok i asked my friend how to change the Voltage of my DIMM slots and this is his reply.
Be careful with OCZ Gold DIMMS the 2GB DDR3 modules run at the higher 1.65V whereas your motherboard native DIMM Slots voltage supply is 1.5V. Effectively running the OCZ Gold at the lower 1.5V voltage will reduce their performance. To will need to overclock the OCZ memory modules to run at the higher 1.65V which means entering the CMOS and adjusting the DRAM Voltage within the BIOS and you may also have to adjust the PCH Voltage.
Some motherboards do not allow you to adjust the DRAM Voltage whereas other motherboards cause instability when you mess with their native DIMM Slots voltage of 1.5V. This is why I donít bother with OCZ there advertised performance figures are based on overclocking their DIMMís to run at 1.65V which is a lot of mucking about trying to get the BIOS settings adjusted correctly when you could just simply buy someone elseís DIMMS that run at the native 1.5V and have just as good performance without the hassle.
Thereís a lot of manufactures of DIMMís who try to fool the public into buying their product by advertising amazing performance figures but hide the fact that to achieve the higher performance requires a lot of specialist knowledge. You need to have a good grounding in adjusting BIOS settings and check that the DIMMís are actually compatible with the other components in the system like the motherboard and processor before you can achieve the manufactures advertised performance.
The most important elements in any system are the processor and a good graphics card linked together by a good motherboard. Memory modules are a secondary consideration. Consider this fact that is your processors FSB is 1333MHz then installing DDR3 DIMMís with a frequency of 1600MHz will not improve your performance unless you overclock the DIMMís to run at 1600MHz which can cause instability issues while playing games or multi-tasking.
So beware when buying memory modules first check with your motherboardís manufacture for their recommendation for compatible memory modules and also be aware that any DDR3 DIMMís that need more than 1.5V to operate should be avoided.
So im now asking you guys lol could someone explain how to do it please?