I have a ASUS P5GV-MX motherboard with a P4 3.0Ghz, for the longest time I’ve been running 2GB of memory 2x1GB = 2048mb which is reported by bios.
I was going to upgrade to Win7 so I purchased two memory sticks, exact matches, Kingston DDR400 2.6V, I can run any two in any combination without any problem.
The problem is if I add 1 or 2 additional sticks the memory reads in the bios as 2688mb regardless if it is 3x1GB or 4x1GB. Once I removed the ATI 2600 Pro PCIe and use the onboard video the system memory increased to 2936mb, again didn’t matter if I was running 3 or 4 sticks.
When I run 3 sticks the system reports single channel mode, if I run 4 sticks the system reports dual channel mode.
I can mix and match any of four in any of slots and system runs at 2048 just fine..it is when I add 3 or more sticks. As of now there is no OS on the system this is all reported by the bios. I even reset the bios by jumper, confirmed all settings, etc
Any suggestions? On a side note, tested all memory, all memory reported fine on different system.
