Hello everybody. Here is the issue: im using MSI H55M-ED55 Mobo, i3 540 CPU, Wintec 4Gb(2x2Gb) ddr3 1333, GTS 250 and win 7 x64. In system properties it shows that only 3.87Gb of my memory is usable. Here is the question im using dedicated Videocard and 64 bit operating system why all 4gb of memory are not usable, i assume onboard graphics reserves part of 4Gb ram, but main VGA set to PCI-E, not to onboard. Is it specifics of h55/57 chipset, or smth is wrong?