| name | newegg-psu-calculator |
| description | Calculate the recommended PSU wattage for a PC build using Newegg's CPU/GPU wattage APIs plus fixed power tables for other components. Use this skill whenever users ask: "what PSU do I need?", "how many watts for my build?", "is my power supply enough?", "calculate power for my PC", or describe PC components (CPU + GPU + RAM + storage) and want to know what power supply to buy. Trigger even if the user hasn't explicitly mentioned PSU — wattage is the natural next question once someone lists their components. |
Newegg PSU Wattage Calculator
Intelligently collects component information through adaptive menus, then
calculates total wattage via live Newegg CPU/GPU wattage tables + fixed tables.
scripts/calculate_psu.py fetches the CPU and GPU wattage tables from the
website-www-tool endpoint (apis.newegg.com/ex-mcp/..., stateless JSON-RPC, no auth)
and sends x-skill: newegg-psu-calculator on every request. Nothing to install or
register; if a fetch fails the script degrades to a warning in warnings[] rather than
guessing a wattage.
Core principle: Be smart about what to ask. If the user already mentioned
components, skip those questions. Combine remaining unknowns into as few
AskUserQuestion calls as possible. Vary question wording based on context.
Phase 0 — Parse the user's message first
Before asking anything, extract whatever components the user has already mentioned:
- CPU model or brand → mark as known
- GPU model or brand → mark as known
- RAM size/type → mark as known
- Storage config → mark as known
- Any other component mention → note it
Then proceed to collect only the missing information.
Examples of smart extraction:
- "I have a Ryzen 7 9800X3D and RTX 5080" → CPU ✓ GPU ✓, only ask RAM + storage
- "I'm thinking about an RTX 4090, haven't decided on the rest" → GPU ✓, ask CPU + RAM + storage
- "No idea what PSU I need" → ask everything
- "i9-14900K + 64GB DDR5 + 2 SSDs" → CPU ✓ RAM ✓ SSD ✓, only ask GPU
Phase 1 — Collect unknowns via AskUserQuestion
Group missing components into at most 2 AskUserQuestion calls.
This ≤2-round limit applies only to collecting parts (Phase 1). It does not
forbid a Phase 3 optional follow-up (e.g. asking whether the user wants a higher-wattage link).
Grouping strategy
- Round A (core): CPU (if unknown) + GPU (if unknown) — must be one call.
Never split Round A into separate CPU-only then GPU-only turns when both are unknown.
- Round B (peripherals): RAM + storage (if unknown)
- If only 1 or 2 things are missing, combine them all into 1 call.
- If everything is already known, skip directly to Phase 2.
- Threadripper / HEDT (e.g. Threadripper, Threadripper PRO): if motherboard form
factor is unknown, ask for it in the same round when possible; if still unknown,
use
SSI CEB or SSI EEB (150W), not silent consumer ATX. Menu "Other" Threadripper
labels are model examples only — not a motherboard special-case by themselves.
Adaptive question wording
Vary the question text to match context — do NOT use the same fixed wording every time.
CPU question variants (pick the most fitting):
- "Which CPU are you planning to use?" (general)
- "You haven't decided on a CPU yet — pick one:" (when user said they haven't decided)
- "What CPU?" (casual, when user is already in spec-listing mode)
- "Besides [known components], which CPU are you going with?" (when some components are known)
GPU question variants:
- "Which discrete GPU are you using?"
- "Have you picked a GPU? Choose one:"
- "What's your GPU?"
- "Paired with [known CPU], which GPU are you planning?"
RAM question variants:
- "How are you configuring your RAM?"
- "How much RAM?"
- "RAM capacity and generation?"
Storage question variants:
- "What's your storage setup?"
- "Storage configuration?"
- "SSD only, or SSD + HDD?"
Component option menus (reference — use as needed)
CPU options
AMD Ryzen:
- label: "Ryzen 5 9600X" description: "6-core 65W, great value"
- label: "Ryzen 7 9700X" description: "8-core 65W, low power high performance"
- label: "Ryzen 7 9800X3D" description: "8-core 120W, 3D Cache gaming champion"
- label: "Ryzen 9 9950X" description: "16-core 170W, productivity flagship"
- label: "Other AMD model" description: "9900X / 9950X3D / Threadripper, etc."
Intel Core:
- label: "Core Ultra 5 235" description: "10-core 65W, mainstream entry"
- label: "Core Ultra 7 265K" description: "20-core 125W, high performance"
- label: "Core Ultra 9 285K" description: "24-core 125W, flagship"
- label: "Other Intel model" description: "i9-14900K, i7-13700K, etc."
If brand is unknown, merge into one list:
- label: "AMD Ryzen 7 9800X3D" description: "8-core 120W"
- label: "AMD Ryzen 9 9950X" description: "16-core 170W"
- label: "Intel Core Ultra 7 265K" description: "20-core 125W"
- label: "Intel Core Ultra 9 285K" description: "24-core 125W"
- label: "Other AMD model"
- label: "Other Intel model"
Additional AMD options (for "Other"):
Ryzen 9 9950X3D (170W) / Ryzen 9 9900X (120W) / Ryzen 7 9850X3D (120W)
Threadripper PRO 9965WX / 9995WX / 9985WX (all 350W)
Additional Intel options (for "Other"):
Core Ultra 5 245K (125W) / Core Ultra 7 270K Plus (125W)
Core i9-14900K (125W) / Core i7-14700K (125W) / Core i5-14600K (125W)
GPU options
NVIDIA — show generation first if brand unknown; skip if already known:
Generation picker:
- label: "RTX 50 Series (Latest)" description: "5060 Ti / 5070 / 5080 / 5090"
- label: "RTX 40 Series" description: "4060 / 4070 / 4080 / 4090"
- label: "RTX 30 Series" description: "3060 / 3070 / 3080 / 3090"
- label: "Older / GTX Series" description: "RTX 20 / GTX 16 / GTX 10"
RTX 50 Series:
- label: "RTX 5060 Ti" description: "180W"
- label: "RTX 5070" description: "250W"
- label: "RTX 5070 Ti" description: "300W"
- label: "RTX 5080" description: "360W"
- label: "RTX 5090" description: "600W, ultimate flagship"
- label: "Other RTX 50" description: "5060 145W / 5050 130W"
RTX 40 Series:
- label: "RTX 4060 / 4060 Ti" description: "120W / 165W"
- label: "RTX 4070 / 4070 Super" description: "250W / 285W"
- label: "RTX 4070 Ti / 4080" description: "300W / 340W"
- label: "RTX 4090" description: "480W, flagship"
- label: "Other RTX 40" description: "4080 SUPER 350W, etc."
RTX 30 Series:
- label: "RTX 3060 / 3060 Ti" description: "170W / 240W"
- label: "RTX 3070 / 3070 Ti" description: "280W / 320W"
- label: "RTX 3080 / 3080 Ti" description: "390W / 400W"
- label: "RTX 3090 / 3090 Ti" description: "420W / 480W"
AMD Radeon:
- label: "RX 9070 / 9070 XT" description: "220W / 340W, latest flagship"
- label: "RX 7800 XT / 7700 XT" description: "288W / 245W, great value"
- label: "RX 7900 XTX / 7900 XT" description: "370W / 335W, flagship"
- label: "RX 7600 / 9060 XT" description: "185W / 182W, entry level"
- label: "Other AMD GPU" description: "RX 6900 XT / 6800 XT, etc."
No discrete GPU:
- label: "No discrete GPU" description: "Using CPU integrated graphics"
- label: "Not decided yet" description: "Calculate other components first"
RAM options
- label: "8GB DDR5 × 2" description: "Dual-channel 16GB DDR5"
- label: "16GB DDR5 × 2" description: "Dual-channel 32GB DDR5 (mainstream)"
- label: "32GB DDR5 × 2" description: "Dual-channel 64GB DDR5 (high-end)"
- label: "16GB DDR4 × 2" description: "Dual-channel 32GB DDR4"
- label: "Other config" description: "Custom capacity or more sticks"
Storage options
- label: "1 SSD (1TB+)" description: "SSD only, 11W"
- label: "2 SSDs (1TB+ each)" description: "Dual SSD, 22W"
- label: "SSD + HDD (7200RPM)" description: "SSD for OS + HDD for storage"
- label: "Other" description: "Custom configuration"
Phase 2 — Build the JSON spec and run the script
Map all selections to the JSON spec format and run:
python3 <skill_base_dir>/scripts/calculate_psu.py '<json_spec>'
Mapping guide:
| Selection | JSON field | Value |
|---|
| Ryzen 7 9800X3D | cpu | "Ryzen 7 9800X3D" |
| RTX 5080 | gpu | "RTX 5080" |
| 2 GPUs | gpu_count | 2 |
| ATX (default) | mb | "ATX" (if omitted, script defaults ATX — label as default in Phase 3) |
| Threadripper, mb unknown | mb | "SSI CEB" or "SSI EEB" (prefer asking first) |
| 16GB DDR5 × 2 | ram + ram_count | "16GB DDR5", 2 |
| SSD 1TB+ | ssd | "1TB+" |
| 2 × SSD 1TB+ | ssd + ssd_count | "1TB+", 2 |
| HDD 7200RPM | hdd | "7200RPM 3.5\"" |
| No discrete GPU / iGPU / 无独显 / 核显 / none / Not decided yet | gpu | Omit gpu, or "", or pass the phrase (script maps known phrases → 0W). Do not invent a discrete model. |
| User said "no GPU" in free text not in the script list | — | Prefer omit gpu / "" / a known phrase rather than a prose string that may only warn |
Example:
python3 /path/to/scripts/calculate_psu.py \
'{"cpu":"Ryzen 7 9800X3D","gpu":"RTX 5080","mb":"ATX","ram":"16GB DDR5","ram_count":2,"ssd":"1TB+"}'
Phase 3 — Present results
Script JSON fields (use these; do not invent numbers):
| Field | Meaning |
|---|
total_watts | Component sum |
headroom_watts | total_watts × 1.2 |
recommended_psu_watts | Sole main recommendation (catalog tier) |
catalog_floor_applied | true when headroom < 550 but rec is 550 |
optional_higher_tier_watts | Next tier above main (for verbal mention / later link only) |
recommendation_note | Wording guidance — follow it |
shop_url | First (and only) link in the first reply; wattage == main rec |
Hard rules — ticket #14 (main rec / wording / link must align)
- Main recommendation =
recommended_psu_watts only. Never treat a higher tier as the primary pick.
- First shop link =
shop_url (or build URL with the same wattage). Forbidden: main says 550W but link is d=650W, or main says 750W while copy pushes 650W as the buy target.
- You may verbally mention
optional_higher_tier_watts for upgrade headroom (one short sentence). That mention is not a second recommendation and must not get a link yet.
- End of first reply: ask if they want a higher-wattage shop link. Give a second link only after the user agrees.
- Do not dump multiple conflicting wattages + multiple links in the first reply.
Hard rules — ticket #15 (550 floor wording)
- Keep 550W as the default minimum purchase tier (do not change script floor to 450/500).
- When
catalog_floor_applied is true (typical iGPU / low-draw builds ~150–210W):
- Do not say the 550W pick “已含 20% 余量” / “already includes 20% safety margin” as if 550 ≈ draw×1.2.
- Do say: after ×1.2 the need is still well below 550; 550W is the starting catalog tier we recommend for modular Gold availability/quality.
- Optional: user may choose a lower-wattage PSU themselves; our shop link stays at 550W.
- When
catalog_floor_applied is false, you may say the tier includes ~20% headroom then rounds up to the next catalog tier — still keep main rec and first link identical.
- Prefer
recommendation_note from the script when unsure.
Presentation order
- Component breakdown table — type, name, watts, count × subtotal
- If motherboard was not specified by the user, label it as ATX (default) (or whatever default the script used).
- Total system draw —
total_watts (optionally show headroom_watts)
- Recommended PSU —
recommended_psu_watts only, with #15-compliant wording
- PSU tiers (must match
PSU_TIERS in calculate_psu.py): 550 · 650 · 750 · 850 · 1000 · 1200 · 1600
- Guidance: 550–750 Gold modular OK; 850+ prefer Gold minimum; 1000+ Platinum when budget allows.
- PCIe connector note — for RTX 5000 series: must have PCIe 5.0 16-pin (600W native)
- First Newegg shop link —
shop_url (wattage == main recommendation)
- Optional one-line higher-tier mention + ask before any second link
- Existing PSU comparison: only if the user clearly stated an existing PSU in this turn. Never invent “you already have a 750W PSU.”
Fallback wattage tables (for manual calculation if script unavailable)
Motherboard
ATX 70W · E-ATX 100W · Micro ATX 60W · Mini-ITX 30W · Thin Mini-ITX 20W · SSI CEB/EEB 150W · XL AT 130W
RAM (per stick)
192GB DDR5 57.6W · 128GB DDR5 38.4W · 64GB DDR5 19.2W · 32GB DDR5 9.6W · 16GB DDR5 4.8W · 8GB DDR5 2.4W · 4GB DDR5 1.2W
192GB DDR4 72W · 64GB DDR4 24W · 32GB DDR4 12W · 16GB DDR4 6W · 8GB DDR4 3W · 4GB DDR4 1.5W
SSD · HDD · Optical
SSD under 512GB 10W · SSD 512GB–1TB+ 11W
HDD 5400RPM 15W · 7200RPM 20W · 10K RPM 30W · 15K RPM 40W
Optical: Blu-Ray/DVD-RW 30W · COMBO 24W · DVD-ROM 20W · CD-RW 16W · CD-ROM 15W
