monitor not getting a signal from pc

[Hefemeister]

CPU-Z will tell you what you need to know about the speeds of the RAM

Also give us the motherboard model cpu z gives you.

 

[Druid]

General

Type: DDR
size: 3072 MBbytes
Channels #: dual

Timings

DRAM Frequency: 332.6 MHz
FSB: DRAM: 6:10
CL: 5.0 clocks
tRCD: 5 clocks
tRP: 5 clocks
tRAS: 15 clocks
tRC: 20 clocks

Let me get this straight, this thing is detecting all 3 gigs, but my system thinks I have 2? Why?

I am assuming it is only going to be using 2 gigs of ram for games since that is what the system is detecting?