I bought a second identical 512 memory stick to upgrade to 1gig, and for some reason it wont clock up to 400 to match the other one. They arent exactly identical. There is some kind of discrepancy in the part numbers, with the new second one having "C3" at the end. Newegg couldnt tell me what that was, and for some reason the part# with "C3" is $2 more expensive on their site. I did not notice this difference until I got it installed. Can someone shed some light on why its stuck at 333mhz DRAM clock at boot? It was 400 before the second memory stick install. I changed the BIOS config to manual 400mhz, but its still 333. TIA!
The one with C3 at the end is slower that the other. I think that the C3 is just a slower version of the original version (slower FSB).
It seems the only difference is in the CAS latency C3: Latency » 3-3-3-8-2T Non-C3: Latency » 2.5-3-3-8-2T The CAS# latency is .5 slower on the C3 model.. I do notice that the C3 stick only has chips on ONE side, while the non-C3 has chips on both side.. perhaps this is why the non-C3 is faster? Still doesnt make sence why it cost more. Does this mean its impossible to run them at 400mhz together? Both are capable of 400 seperately..
you can install RAM of differing speeds in the same system but the system will only run the RAM at the speed of the slowest RAM installed
