newegg-psu-calculator

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.

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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

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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)

1. Main recommendation = recommended_psu_watts only. Never treat a higher tier as the primary pick.
2. 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.
3. 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.
4. End of first reply: ask if they want a higher-wattage shop link. Give a second link only after the user agrees.
5. Do not dump multiple conflicting wattages + multiple links in the first reply.

Hard rules — ticket #15 (550 floor wording)

1. Keep 550W as the default minimum purchase tier (do not change script floor to 450/500).
2. 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.
3. 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.
4. Prefer recommendation_note from the script when unsure.

Presentation order

1. 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).
2. Total system draw — total_watts (optionally show headroom_watts)
3. Recommended PSU — recommended_psu_watts only, with #15-compliant wording
4. 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.
5. PCIe connector note — for RTX 5000 series: must have PCIe 5.0 16-pin (600W native)
6. First Newegg shop link — shop_url (wattage == main recommendation)
7. Optional one-line higher-tier mention + ask before any second link
8. Existing PSU comparison: only if the user clearly stated an existing PSU in this turn. Never invent “you already have a 750W PSU.”

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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