BIOS fails to detect the full 16GB of memory available.
BIOS fails to detect the full 16GB of memory available.
I converted my old PC into a network storage solution for backing up photos and media using Ubuntu 20.04 and Nextcloud. I encountered a problem where the BIOS and server didn’t recognize the full 16GB of RAM. Testing each DIMM slot and RAM stick individually worked, but with four DIMMs it failed. I’ve used two A1+B1 and A2+B2 configurations without issues. However, four slots remain unresponsive. My system shows all sticks and slots in the BIOS, yet only eight GB are listed. I’ve tried overclocking the RAM, adjusted timings for the Nvidia graphics card, changed voltage settings, enabled/disabled memory management, and manually tuned everything—still no improvement. In Ubuntu it accepts all four slots but not all four RAM modules. This situation is confusing, especially since my hardware was stored in the basement for years. Despite everything functioning normally, I’m puzzled about why only some DIMMs work. I’m hoping someone can help clarify this issue. Thanks for your assistance.
Intel doesn't prefer having all four slots full. This "problem" has existed forever. I recall the issue from the DDR2 era. Seek 2x16GB or 2x8GB RAM... probably second-hand. Also, inspect your LGA connectors—dust, hairs, anything out of place. Most likely, any four slots or RAM sticks won't work.
That makes sense. I’m pretty sure it’s about that Mandela effect. I recall using an i5 3570K on Ivy Bridge with LGA1155 and 16GB, but maybe it was supposed to go up to 32GB. I don’t think there were big problems with four slots, though. Probably my memory controller is just being unreliable.
I've faced more issues with Intel compared to AMD on DDR2 and DD3 systems. With AMD, everything tends to fail, while Intel was more selective. I'm hoping to move past those challenges.