Hi everyone :
Thanks again for replies!
Just to go over some of the pertinent info I garnered so far:
1) the BIOS is registering all 4 GB of RAM. I therefore have to assume the sticks are OK.
2) I really do not know what the m/b is other than the computer is a Dimension 8400 with a Pentium 4 CPU (3.2GHz) H/T capable for dual core.
3) Even though I am running a 64 bit OS, the m/o is only capable of 4GB with 1 GB DDR2 maximum size sticks & 4 memory slots 0-3
4) Interesting fact: ran memtest (on grub menu) at bootup & RAM is only showing 3GB! Note: this test would void any Nvidia addressing problems as posted, right?
Here is the memory info from sudo lshw:
It is quite apparent that all 4 RAM sticks are good & memory is being registered at 4GB.Code:*-memory description: System Memory physical id: 1000 slot: System board or motherboard size: 4GiB *-bank:0 description: DIMM DDR Synchronous 533 MHz (1.9 ns) product: 1G-UDIMM vendor: Kingston physical id: 0 serial: 2C0D2203 slot: CHANNEL A DIMM 0 size: 1GiB width: 64 bits clock: 533MHz (1.9ns) *-bank:1 description: DIMM DDR Synchronous 533 MHz (1.9 ns) product: 1G-UDIMM vendor: Kingston physical id: 1 serial: 2C0D2303 slot: CHANNEL B DIMM 0 size: 1GiB width: 64 bits clock: 533MHz (1.9ns) *-bank:2 description: DIMM DDR Synchronous 533 MHz (1.9 ns) product: 1G-UDIMM vendor: Kingston physical id: 2 serial: 2C0DF402 slot: CHANNEL A DIMM 1 size: 1GiB width: 64 bits clock: 533MHz (1.9ns) *-bank:3 description: DIMM DDR Synchronous 533 MHz (1.9 ns) product: 1G-UDIMM vendor: Kingston physical id: 3 serial: 2C0DE837 slot: CHANNEL B DIMM 1 size: 1GiB width: 64 bits clock: 533MHz (1.9ns)
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