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Computer Memory

October 26, 2023
April 26, 2016

RAM Explained - Random Access Memory - YouTube
B-Die Finder

DDR DRAM FAQs And Troubleshooting Guide | Tom's Hardware
DDR Memories Comparison and Overview|NXP
Everything You Need To Know About DDR, DDR2 and DDR3 Memories - Hardware Secrets
Laptop DDR4 caveats - x8 layout versus x16 versus single and dual channel channels, x8 and x16 layout

Timing/Latency

true latency
= time per cycle X number of cycles
= CL (clock cycles) / MHz

How Do Memory Timings Work? - YouTube
【硬件科普】高频内存为什么要打开 XMP?详解内存条 SPD 与 XMP - YouTube
Why I get NO POST with XMP??? 👉 ULTIMATE RAM + XMP Guide - YouTube How Rank, Density and Population affects transfer rate (in that order)

Don't waste money chasing RAM speed for gaming on AMD or Intel | PC Gamer DDR4@3600MHz is still the sweet spot in 2022

Understanding RAM Timings - Hardware Secrets
RANT: THE CAS LATENCY TIMING DOESN'T MATTER AS MUCH AS YOU THINK IT DOES - YouTube
What Are Memory Timings? CAS Latency, tRCD, tRP, & tRAS (Pt 1) | GamersNexus - Gaming PC Builds & Hardware Benchmarks
What Are Memory Timings? CAS Latency, tRCD, tRP, & tRAS (Pt 1) - YouTube

RAM Latency Calculator

Single-Channel vs Dual-Channel

RAM Performance Benchmark: Single-Channel vs. Dual-Channel - Does It Matter? | GamersNexus - Gaming PC Builds & Hardware Benchmarks
Single-Channel vs Dual-Channel RAM: Which One is Better for Gaming? | Hardware Times
Everything You Need to Know About the Dual-, Triple-, and Quad-Channel Memory Architectures - Hardware Secrets
Single- and Multichannel Memory Modes

DDR5

Does RAM Speed REALLY Matter?? (DDR5 Edition) - YouTube
latency is more crucial

DDR5 is FINALLY HERE... and I've got it - YouTube
DDR5 導讀~邁入新世代記憶體 DDR5 入門篇 - YouTube

UDIMM vs RDIMM

Unified Memory

How “Unified Memory” Speeds Up Apple’s M1 ARM Macs
Unified Memory for CUDA Beginners | NVIDIA Developer Blog

Motherboard Topology

板廠沒有說的秘密迎接下一世代再次科普記憶體走線的差異! - YouTube AMD Ryzen and Intel post-Z390 are using daisy chain, one of the bank has better quality if using only one DIMM per channel
板廠沒有說的秘密與記憶體廠的各種互動記憶體超頻是怎樣的形成 - YouTube

【硬件科普】为什么装机内存条推荐安装到第 24 槽而不是 13 槽?为什么 ITX 主板超频内存更容易? - YouTube
T-Topology
Direct Topology
Daisy-Chain Topology

Rambling about motherboard memory layouts. - YouTube