DDR4 to DDR5 transition forces simultaneous motherboard, CPU, and RAM replacement with no performance benefit for most workloads

DDR5 is electrically and physically incompatible with DDR4 (different pin count, voltage, and on-DIMM voltage regulation), meaning upgrading RAM requires simultaneously replacing the motherboard (and often the CPU, since new platforms only support DDR5). DDR5's headline improvements (higher bandwidth, larger capacities) primarily benefit memory-bandwidth-intensive workloads (video editing, scientific computing, AI training), while typical office, web browsing, and gaming workloads see 0-5% real-world performance improvement. So what? A small business or individual upgrading from 32GB DDR4 to 32GB DDR5 must spend $400-$800 on a new motherboard + CPU + RAM bundle instead of $100-$150 on a RAM-only upgrade, a 3-5x cost increase for negligible benefit. So what? As DDR4 manufacturing capacity shrinks (fabs converting to DDR5 production), DDR4 prices are rising rather than falling, creating a squeeze where the old standard becomes expensive and the new standard requires a full platform change. So what? IT departments managing hundreds of machines face a fleet-wide capital expenditure event rather than incremental upgrades, concentrating budget impact into a single fiscal year. So what? Organizations delay the transition, running DDR4 systems past their useful life, accumulating technical debt and missing out on other platform improvements (PCIe 5.0, new CPU features) that are bundled with DDR5 platforms. So what? The memory industry's planned obsolescence cycle forces coordinated multi-component upgrades that primarily benefit component manufacturers rather than end users, extracting maximum revenue per upgrade cycle. This persists because JEDEC standards intentionally break backward compatibility to enable new electrical specifications, motherboard manufacturers have no incentive to create bridge solutions, and the memory industry operates on a cadence where each generation deliberately obsoletes the previous one to drive replacement sales.