Looking to resurrect an old PC I have around that's built on an Asus P7H55-M motherboard. It's in good condition except that one of the RAM channels has a faulty blue slot, but dual channel works fine when both channels' grey slots are populated.
At least it does with an i3 540 it had initially. I've got an i5 750 for it recently and it didn't boot with that RAM config. But it worked fine when I put both sticks into a single channel (where the blue slot is working). If I add a third stick to the second channel's remaining grey slot, PC doesn't detect it (not showing up in BIOS or OS, however I can read its SPD from the OS). I returned that CPU assuming the IMC is dead and got an X3450, and the same thing happens. Is this something to do with Lynnfield CPUs compatibility on this motherboard or am I just so unlucky that I got two crippled CPUs in a row? RAM in question is a 2x4Gb Hynix 1600Mhz kit (dual-sided, so compatibility on 1156 should be good).
At least it does with an i3 540 it had initially. I've got an i5 750 for it recently and it didn't boot with that RAM config. But it worked fine when I put both sticks into a single channel (where the blue slot is working). If I add a third stick to the second channel's remaining grey slot, PC doesn't detect it (not showing up in BIOS or OS, however I can read its SPD from the OS). I returned that CPU assuming the IMC is dead and got an X3450, and the same thing happens. Is this something to do with Lynnfield CPUs compatibility on this motherboard or am I just so unlucky that I got two crippled CPUs in a row? RAM in question is a 2x4Gb Hynix 1600Mhz kit (dual-sided, so compatibility on 1156 should be good).