Saved on this device. Practice is ungraded.
A repair shop must return a RAM-upgraded workstation with both memory channels active, zero diagnostic errors, and at least 30 GB/s in the supplied acceptance model. Its manual recommends A2/B2 for the matched pair. Default and standard profiles recorded zero errors; the extreme profile recorded 12. Model throughput equals placement factor × measured profile throughput; validate actual hardware separately.
A customer comparing DDR4-3200 CL16 with DDR4-3600 CL18 assumes the larger CL number means a longer delay. Calculate each kit’s approximate CAS delay in ns using CL × 2000 ÷ data rate (MT/s), then explain the result before recommending a replacement. This compares one timing; bandwidth, other timings, channels, controller behavior, and stability also matter.
Channels carry memory data; timings describe access delays. Prefer settings the platform runs reliably.
Two matching modules in the recommended slots can enable dual-channel operation. The system may still boot in the wrong slots, but performance can suffer.
XMP and EXPO profiles ask the memory to run faster than default settings. They are helpful, but the CPU memory controller, board, and number of modules still matter.
Inputs: Kit A DDR4-3200 CL16; kit B DDR4-3600 CL18. Approximate CAS time = CL × 2000 / data rate in MT/s.
Task: Calculate each CAS latency and name a limitation.
Both are about 10 ns. Bandwidth, controller ratios, other timings, capacity, and workload still differ.
DDR data rate is MT/s, not its underlying clock in MHz. Equal CAS time does not imply equal total performance.