3 ms·
my fresh PC with 64GB DDR5 takes a minute til POST.
by cocodill 3y ago
my fresh PC with 64GB DDR5 takes a minute til POST.
- water9 3y agoCheck bios for fast boot setting perhaps?
- dist-epoch 3y agoDDR5 memory has this thing where it needs to be "trained" to figure out the best settings for a particular memory/motherboard combination. Maybe your PC "trains" the memory every boot instead of just the first one. https://www.crucial.com/support/articles-faq-memory/ddr5-memory-training https://www.crucial.com/support/articles-faq-memory/ddr5-mem...
- perihelions 3y agoI'm skeptical if that's design behavior, or if this article is in that category of "stories manufacturers write to trick people into not RMA'ing obviously defective product batches" ("A small number of DDR5 systems...") It's not only the multiple 15-minute RAM boot times (!?) that are worrying: it's that I'd have zero visibility into what underlying cause is responsible for these "small number" of events, and what other symptoms could develop later on (outside the RMA window). I couldn't just take the manufacturer's reassurance at face value.
- dist-epoch 3y ago> This essentially involves measuring lengths of wires from memory controller to individual DRAM chips. The idea there is that it is impossible to make them well-enough matched for the frequencies involved, so the deliberate difference is compensated for in logic and software (also it saves space on PCB of both motherboard and the DIMMs themselves). https://www.systemverilog.io/design/ddr4-initialization-and-calibration/#readwrite-training https://www.systemverilog.io/design/ddr4-initialization-and-... https://www.youtube.com/watch?v=_U3-hST9YBg https://www.youtube.com/watch?v=_U3-hST9YBg