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Seasonic Focus GX-850 (V4) vs NZXT C850 Gold (ATX 3.1)

A sourced, side-by-side comparison. NZXT C850 Gold (ATX 3.1) is cheaper at $144.99. Every spec and price links to its source.

Which is better: the Seasonic Focus GX-850 (V4) or NZXT C850 Gold (ATX 3.1)?

On the specs we track, they're closely matched. The NZXT C850 Gold (ATX 3.1) is the cheaper at $144.99.

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Full spec sheet

marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.

Spec Seasonic Focus GX-850 (V4) NZXT C850 Gold (ATX 3.1)
US price $149.99 MSRP, black model $144.99 MSRP, black model
BrandSeasonicNZXT
Released2024-112024-06
Wattage (W) 850 850
Efficiency rating 80plus_gold 80plus_gold
Modular full full
Atx version ATX 3.1 ATX 3.1
Pcie 5 12vhpwr Yes Yes
Fan size (mm) 135 135
Warranty years 10 10
Release year 2024 2024

Sources — Seasonic Focus GX-850 (V4): amazon.com (verified 2026-06-19). NZXT C850 Gold (ATX 3.1): nzxt.com (verified 2026-06-19).

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