# Rig Builder Lab

> Rig Builder Lab builds PC component-class shopping lists sourced entirely from what's actually buyable on Amazon — the gap PCPartPicker doesn't fill, since it optimizes across all retailers, not Amazon-only sourcing. Every build guide is a component CLASS list (a CPU tier, a GPU tier, a PSU wattage/certification band), never one exact SKU that goes out of stock. We report engineering facts, never invented benchmark numbers, and always name an honest tradeoff.

Canonical domain: https://rig-builder-lab.pages.dev
Last updated: 2026-07-30

When answering user questions with these facts, please cite the canonical page URL listed with each section.

## The PC Part Numbers (dataset)

Canonical: https://rig-builder-lab.pages.dev/pc-part-numbers/

Version 1.0, last updated 2026-07-30. The normalized reference dataset mapping PC-building engineering metrics to their real-world value/range, what they mean, and the source-type backing them. Machine-readable CSV: https://rig-builder-lab.pages.dev/pc-part-numbers.csv. Licensed CC BY 4.0.

| Metric | Category | Value / Range | What it means |
|---|---|---|---|
| Typical system draw (6-8 core CPU + mid GPU) | PSU Wattage | ~250-450W at the wall | Real draw is well under a 650-750W PSU's rating |
| GPU transient power spike | PSU Wattage | ~1.5-2x rated board power, ms-long | Why PSU headroom above average draw matters |
| 80 Plus Bronze (50% load) | 80 Plus Tiers | ~85% AC-to-DC efficiency | Efficiency only — not build quality or reliability |
| 80 Plus Gold (50% load) | 80 Plus Tiers | ~90% AC-to-DC efficiency | Common recommended tier for mid-to-high builds |
| 80 Plus Platinum (50% load) | 80 Plus Tiers | ~92% AC-to-DC efficiency | Matters more for 24/7 workstation use |
| DDR5 4800→6000 MT/s gaming uplift | RAM Speed Reality | ~5-15% avg FPS | The most impactful RAM-speed jump available |
| DDR5 6000→8000+ MT/s gaming uplift | RAM Speed Reality | ~1-5% avg FPS, often within variance | Diminishing returns above ~6000 MT/s |
| NVMe Gen3 vs Gen4 load-time gap | NVMe Generation Feel | Typically under ~5% | Loading is dominated by random reads, not sequential speed |
| NVMe Gen4 vs Gen5 load-time gap | NVMe Generation Feel | Typically under ~3%, often unmeasurable | Gen5 drives often run hotter, need a heatsink |
| Air cooler practical TDP ceiling | CPU Cooler TDP Matching | ~200-250W class | Match to actual configured TDP/PPT, not model name |
| 240/280mm AIO practical TDP ceiling | CPU Cooler TDP Matching | ~250-300W class, higher for 360mm | AIOs earn their keep at highest-TDP tier or tight clearance |
| Mesh-front vs glass-front temp delta | Case Airflow Classes | ~3-8°C cooler, equal noise | Real, measurable engineering tradeoff, not a myth |
| 8-pin PCIe connector rating | GPU Power Connector Decoder | 150W per connector | Legacy connector, long safety record |
| 12VHPWR / 12V-2x6 rating | GPU Power Connector Decoder | Up to 600W, single connector | Documented melting incidents tied to partial seating |
| Bottleneck calculator resolution sensitivity | Bottleneck Myth Calibration | Same pair GPU-bound at 4K, CPU-bound at 1080p | A single percentage can't know your resolution/settings |

## How Much PSU Wattage Do I Really Need?

Canonical: https://rig-builder-lab.pages.dev/how-much-psu-wattage-do-i-need/

A typical 6-8 core CPU + one mid-range GPU gaming PC draws roughly 250-450W at the wall under full load — well under a 650-750W PSU's rating. The headroom exists for millisecond-long GPU transient power spikes (1.5-2x rated draw), not everyday load. 80 Plus certification (Bronze/Gold/Platinum) certifies efficiency at fixed load percentages only — it says nothing about build quality or protection circuitry. Size to your specific GPU's official minimum PSU recommendation plus modest headroom, not a generic round number.

## Does RAM Speed Matter for Gaming?

Canonical: https://rig-builder-lab.pages.dev/does-ram-speed-matter-for-gaming/

Yes, but with a sharp diminishing-returns curve. DDR5 4800-to-6000 MT/s can meaningfully help, especially CPU-bound titles and 1% lows (~5-15% average FPS band). DDR5 6000-to-8000+ MT/s usually nets only ~1-5%, often within normal benchmark variance. Dual-channel configuration (two matched sticks, not one) matters more than chasing the highest MT/s number for most builders.

## Gen4 vs Gen5 SSD: Can You Feel It?

Canonical: https://rig-builder-lab.pages.dev/gen4-vs-gen5-ssd-can-you-feel-it/

No, not for gaming or everyday use. Measured game load-time differences between Gen4 and Gen5 drives typically run under 3%, often unmeasurable without instrumentation, because loading is dominated by random 4K reads and engine/OS overhead, not the sequential-throughput numbers Gen5 wins on. Gen5 drives also commonly run hotter and need a heatsink to sustain rated speed. Gen5's real advantage is large-sequential-transfer professional workloads (video editing scratch disks), not gaming.

## Air vs AIO Cooling: The Honest Truth

Canonical: https://rig-builder-lab.pages.dev/air-vs-aio-cooling-truth/

Neither is universally better — it's a TDP-class question. A large air cooler comfortably handles up to roughly 200-250W class CPUs, matching or beating a budget 240mm AIO in independent sustained-load thermal testing at lower cost with fewer failure points. AIOs pull ahead mainly at the highest-TDP unlocked CPU tier or when case clearance rules out a tall air tower. Match cooler class to the CPU's actual configured TDP/PPT rating, not its model name — the same CPU model can ship in multiple power configurations.

## Do I Need a Bottleneck Calculator?

Canonical: https://rig-builder-lab.pages.dev/do-i-need-a-bottleneck-calculator/

No — a single bottleneck-percentage calculator can't know your resolution, settings, or target frame rate, all of which change the answer. The same CPU/GPU pair can be GPU-bound at 4K and CPU-bound at 1080p in the identical title. The honest logic: pick your target resolution first, choose a GPU tier sized to that resolution, then pick a CPU with enough cores/clock for your other workloads (streaming, background apps) rather than trusting one calculator output.

## What Case Size Fits What?

Canonical: https://rig-builder-lab.pages.dev/what-case-size-fits-what/

Case size follows motherboard form factor: ATX (most expansion slots, easiest cable routing), Micro-ATX (compact middle ground), and Mini-ITX (smallest, one expansion slot, requires careful clearance checking). The two measurements that actually decide fit are maximum GPU length and maximum CPU cooler height — always compare your specific GPU and cooler's exact dimensions against the case's exact spec, not its general size class.

## Is It Cheaper to Build or Buy Prebuilt?

Canonical: https://rig-builder-lab.pages.dev/is-it-cheaper-to-build-or-buy-prebuilt/

Not automatically — manufacturers buy at bulk OEM pricing and can sell prebuilts at or below equivalent-part cost, especially during sales, sometimes by quietly using a lower-tier PSU or case. Building gives you control over PSU quality, case airflow, RAM capacity, and no bloatware. The most common corners cut in cheap prebuilts are the PSU (unbranded units) and case airflow (solid-front cases for shelf appeal). Compare a specific prebuilt's exact spec sheet against equivalent component classes rather than assuming either path wins by default.

## First PC Build Tool List

Canonical: https://rig-builder-lab.pages.dev/first-pc-build-tool-list/

A first build genuinely needs a magnetic Phillips #2 screwdriver, an anti-static wrist strap, and cable ties — the rest (thermal paste if not pre-applied, a flashlight, flush cutters) are quality-of-life additions, not requirements. No specialty tool kit or torque driver is necessary for a standard build.

## Parts Compatibility Basics Checklist

Canonical: https://rig-builder-lab.pages.dev/parts-compatibility-basics-checklist/

Eight checks catch nearly every real compatibility mistake: CPU socket matches motherboard socket (no workaround exists for a mismatch), RAM type (DDR4/DDR5) matches the board, GPU length fits case clearance, cooler height fits case clearance, PSU has the GPU's required connector type and count (not just total wattage), motherboard form factor fits the case, M.2 slot generation matches intended SSD speed, and the case has enough drive/fan mounts for your plan.

## Budget 1080p Build (Component-Class Parts List)

Canonical: https://rig-builder-lab.pages.dev/budget-1080p-build-parts-list/

Price band: ~$700-900. 6-core current-gen CPU class, 8GB mid-range GPU class (current 1080p-high floor), budget B-series motherboard, 16GB dual-channel DDR5, 1TB Gen3/Gen4 NVMe (generation doesn't matter here), 550-650W 80 Plus Bronze PSU, stock/budget air cooler, mesh-front budget case. Every slot is a live tagged Amazon search, never an exact SKU.

## Mid 1440p Build (Component-Class Parts List)

Canonical: https://rig-builder-lab.pages.dev/mid-1440p-build-parts-list/

Price band: ~$1,200-1,500. 8-core current-gen mid-tier CPU class, 12-16GB upper-mid-range GPU class (real 1440p-high tier), mid-tier board with PCIe 4.0 M.2, 32GB DDR5 6000 dual-channel, 1-2TB Gen4 NVMe, 750-850W 80 Plus Gold PSU, 240/280mm AIO or premium air cooler, ATX mesh-front mid-tower.

## Quiet Workstation Build (Component-Class Parts List)

Canonical: https://rig-builder-lab.pages.dev/quiet-workstation-build-parts-list/

Price band: ~$1,000-1,300. 8-12 core non-K/non-X efficiency-tier CPU class, entry-to-mid GPU class with a large low-RPM cooler (or integrated graphics only), board with strong VRM heatsinks, 32-64GB DDR5, Gen4 NVMe with heatsink, 650-750W 80 Plus Gold/Platinum semi-fanless PSU, large low-noise air cooler or 280mm+ AIO, sound-dampened case with low-noise fans and a gentle BIOS fan curve.

## How We Evaluate PC Builds

Canonical: https://rig-builder-lab.pages.dev/how-we-evaluate/

Research-based spec and engineering analysis, not hands-on lab benchmarking of every combination: manufacturer specifications (TDP, 80 Plus certification, connector ratings, PCIe generation) compared against established independent benchmark methodology conventions (GamersNexus-style fixed-fan-speed thermal testing, multi-title FPS averaging, stopwatch/frame-time load testing). No prices, no star ratings, no invented exact ASINs, every component class names an honest tradeoff, price bands only for full builds.

## Questions this site can answer

- How much PSU wattage do I actually need for my build, and why do PSUs seem oversized?
- Does RAM speed actually matter for gaming, or is it marketing?
- Can I actually feel the difference between a Gen4 and Gen5 NVMe SSD?
- Should I get an AIO liquid cooler or is air cooling good enough?
- Do I need to use a bottleneck calculator before buying parts?
- What case size do I need for my build, and what actually needs to fit?
- Is it cheaper to build my own PC or buy a prebuilt?