I have 4X 2GB RAM sticks installed, Windows 7 Ultimate x64 shows "Installed Memory (RAM): 8GB (4GB Useable)" in the system information. The motherboard says it supports up to 16GB of memory. I had Windows XP x64 and I'm pretty sure it was able to use all 8Gigs of memory. I've just formatted and am not burning through 4GB for sure.
*The BIOS only show 4096MB while booting.
I was only able to find one option relating to memory mapping and it took it from 4Gigs to 3 and change.
CPU-Z shows all 4 sticks as 2048MB
I went in to msconfig and checked the limits, they are not set.
I tried resetting the CPU and RAM sticks 3 times, the CPU has no pins to be bent (flat contacts, I5)
I rearranged all the RAM.
I have separate video memory from the system memory.
I have a 64 bit OS (I am 100% certain)
Hardware:
Memory: Four Corsair XMS3 TW3X4G1333C9AG
Motherboard: Asus P7P55D Pro
CPU: Intel Core i5-760 BX80605I5760
Graphics: Two ZOTAC ZT-50401-10L GeForce GTX 550 Ti
If anyone has new ideas or knows the exact setting in the bios, it would be greatly appreciated.
Best Answer
Make sure the
Memory RemappingBIOS setting in the Advanced tab is enabled: