BTO vs. Self-Built PCs: Compare Total Cost, Warranty and Your Work
Compare BTO and self-built PCs with matched parts, OS, shipping and warranty. Account for reused parts, setup effort and repair support before you buy.
Read guide →PC building, parts and value comparisons
Compare the whole platform cost, including motherboard, memory, power supply and case. Read the benchmark conditions and price-check date before applying a ranking to your games or applications.
Before choosing a task
- Choose the resolution, games or creative apps, required features and spending limit.
- Match exact models against CPU support, BIOS, memory type, case clearance and power connectors.
- Recheck prices and stock, then compare the complete build cost and warranty.
Compare the options
B650 vs. B850 vs. X870: Check USB4, M.2 Sharing and CPU Support
Compare B650, B850 and X870 using AMD and board specifications. Check USB4, GPU and M.2 lane sharing, SATA ports and CPU support before choosing a board.
Read guide →Air cooler or AIO? Choose by case clearance, noise and maintenance
Compare air coolers and AIOs by workload, noise, RAM clearance and radiator fit, with concrete sizing examples, total-cost checks and practical fault-diagnosis steps.
Read guide →PCIe 4.0 or 5.0 SSD for gaming? Check load times, capacity and slot sharing
Choose a PCIe 4.0 or 5.0 gaming SSD using measured load times, capacity, sustained writes and cooling needs, then check shared M.2 lanes and the full upgrade cost.
Read guide →DDR4 vs. DDR5: Choose for a New Build, Reused RAM and Upgrade Cost
Choose DDR4 or DDR5 around your platform and reused parts. Check board compatibility, memory kits and the full upgrade cost before replacing your RAM.
Read guide →DDR5 with Two or Four DIMMs: Compare Upgrade Speed Limits and Kits
Compare two- and four-DIMM DDR5 upgrades. Check CPU speed limits, tested kit populations, mixing restrictions and capacity verification before buying RAM.
Read guide →Integrated vs. Discrete Graphics: Check Workloads, CPU Models and Outputs
Choose integrated or discrete graphics by checking workloads, exact CPU graphics, shared memory, display ports and upgrade costs before buying a card.
Read guide →1080p, 1440p or 4K: Plan a Gaming Monitor and GPU Budget Together
Compare 1080p, 1440p and 4K using target FPS, refresh rate and GPU evidence. Check port limits and the total monitor, GPU and cable cost before buying.
Read guide →ATX vs microATX vs Mini-ITX: choose a PC case and motherboard
Compare ATX, microATX and Mini-ITX by board size, expansion and case clearance. Check GPU, cooler and PSU fit, then compare the complete build cost.
Read guide →CPU value in Japan, September 2026: five gaming candidates ranked
Compare five CPUs using Japanese prices checked on September 12, 2026 and one gaming benchmark table, plus two alternatives and motherboard and RAM budget examples.
Read guide →GPU value ranking, September 2026: ten models at Japanese retail prices
Compare ten GPUs using Japanese prices checked on September 12, 2026 and a common benchmark suite. See 1080p and 1440p value, VRAM limits and buying checks.
Read guide →Follow the steps
Check PC-Part Compatibility Before Buying: CPU, BIOS, RAM, Case and Power
Check CPU and BIOS support, RAM type, GPU and cooler clearance, and PSU connections before buying PC parts. Verify exact models and configuration limits.
Read guide →How to Choose a PC Power Supply: Wattage, ATX 3.1 and GPU Cables
Choose a PC power supply using the exact GPU requirements. Check wattage, ATX revision, approved cables, case clearance and what efficiency ratings mean.
Read guide →After assembly: diagnose startup and hardware problems
Choose the symptom you can observe: no power, a diagnostic LED, a missing device or a temperature warning. Each guide explains the checks and when to seek support.
- PC will not POST with a DRAM LED: check memory on an ASUS motherboard
- PC crashes after enabling XMP or EXPO: isolate the memory profile in ASUS BIOS
- M.2 SSD missing in BIOS: check SATA/NVMe support and the correct slot
- CPU FAN Error on an ASUS PC: check the CPU_FAN connection and RPM
- No display after a GPU upgrade: check connections and power when BIOS is also missing
- PC will not boot after a CPU swap: check ASUS CPU support and required BIOS
- PC power button does nothing: check the PSU switch and PWR_SW wiring
- CPU Over Temperature Error at startup: check cooling and cooler installation