[ POWER CONVERSION // IDENTIFIED MODEL ]
Seasonic VERTEX GX-850 (SSR-850GX)
Seasonic VERTEX GX-850, SSR-850GX. This record is bounded to the named unit, standard revision, or model family below; nearby model names and replacement parts are not presumed equivalent.
HIGH-VOLTAGE SAFETY: Unplug before external inspection. Never open a power supply. Dangerous voltage can remain inside after it is disconnected. Do not attempt internal repair; use qualified service or replace the unit.
Verified identity & specifications
| Catalog identity | Seasonic VERTEX GX-850, SSR-850GX |
|---|---|
| Form factor / era | ATX 3.0 / PCIe 5.0 high-power ATX |
| AC input | 100–240 V AC, 50/60 Hz; verify exact product label. |
| DC output rating | 850 W; +12 V single rail rated 70 A / 840 W; other rail maxima and combined limits are printed in the model-specific table. |
| Mechanical envelope | 160 × 150 × 86 mm, ATX. |
| Connectors / interface | Fully modular 24-pin ATX, EPS/CPU, PCIe, SATA/peripheral, and native GPU power lead as provided for the documented revision. |
| Revision differences | SSR-850GX identifies the GX variant; VERTEX GX and PX differ in efficiency/cable bundles. Revisions/ATX 3.1 connector updates require checking the nameplate and official cable list. |
Compatibility & safe handling
- Match full model, suffix, region, revision and DC output label to the official documentation. Rated total watts alone do not establish rail or transient compatibility.
- Before replacement, confirm AC input range, rail current/combined limits, motherboard signaling and pinout, mechanical envelope, fasteners, cooling direction, and every required connector.
- Never open the PSU, defeat protective earth, or probe its internals. Do not energize a wet, cracked, corroded, burned, modified, or unidentified supply.
- Modular cable pinouts are not standardized at the PSU end. Use only cables expressly approved for this exact model/revision; matching plugs can have different wiring.
Model and revision notes
SSR-850GX identifies the GX variant; VERTEX GX and PX differ in efficiency/cable bundles. Revisions/ATX 3.1 connector updates require checking the nameplate and official cable list.
Seasonic VERTEX GX official product page and manual; use the SSR-850GX label to avoid mixing Vertex PX/GX variants.
Archival notes
Preserve exact SSR code and hardware revision, native high-current connector, cable kit, and manual. Modular leads are not generic ATX accessories.
Photograph the complete nameplate, assembly/model code, revision/date code, input selector if present, cable ends and mounting side. Separate observed label data from published specifications and preserve the referenced manual issue.
Manufacturer / standards references
- Seasonic VERTEX GX official product page and manualSeasonic VERTEX GX official product page and manual; use the SSR-850GX label to avoid mixing Vertex PX/GX variants.
- Intel — ATX / ATX12V Power Supply Design GuideStandards reference for the ATX electrical/mechanical family; use the revision specified for the product. Historical IBM supplies are not ATX and must not be adapted on this basis.
The exact nameplate and corresponding manufacturer manual remain controlling for regional and hardware revisions.