Seasonic Focus GX V4
Well built, but the most detailed lab test found it noisier and less competitive than rivals. I'd look at the RMx first.
- Efficiency
- 80+ Gold
- Modular
- Full
- Standard
- ATX 3
- Form factor
- ATX
- Outputs
- 750 / 850 / 1000W
The verdict
Seasonic's Focus line has a strong reputation, and this version is ATX 3.1 ready with a 10-year warranty. On paper it's an easy pick.
The reviews don't agree, though. HWBusters, the more detailed test, found it well built but noisier than expected, with weak light-load efficiency, and said rivals offer more for less. NikkTech found it quiet and gave it a Golden Award, but its testing is less thorough.
Until more lab tests are in, I'd treat it as a good unit rather than a standout.
Seasonic Focus GX V4 reviews
The reviews disagree on this one. HWBusters, the more detailed lab test, found it well built but noisier than expected, with weak light-load efficiency. NikkTech's hands-on test found it quiet and gave it its Golden Award.
Both labs agree
- High build quality. HWBustersNikkTech
- ATX 3.1 and PCIe 5.1 ready, with a selectable semi-passive fan mode. HWBustersNikkTech
Where they differ
- Noise: HWBusters found average noise higher than expected and says the fan profile needs work. NikkTech found noise low. HWBustersNikkTech
- Overall performance: HWBusters calls it not competitive with rivals, NikkTech calls it high performance. HWBustersNikkTech
Also worth knowing
- Mediocre transient response at 12V and weak efficiency at light loads. Cybenetics rates it Platinum for efficiency and A- for noise. HWBusters
The Seasonic GX-850 V4 is expensive at $140, but the NZXT C850 costs way lessFocus GX-850 V4, ATX 3.1NikkTech
Seasonic has designed and manufactured yet another high-performance and quality power supply unitFocus GX-850 V4, ATX 3.1 (hands-on test)
NikkTech uses its own test rig rather than lab load equipment, so its findings carry less weight than HWBusters'. Reviews tested the 850W model.
Pick your output
- 750WMid-range builds, up to an RTX 5070 Ti class card.Check 750W price
- 850WHigh-end builds, up to an RTX 5080 class card.Check 850W price
- 1000WThe most power-hungry cards, RTX 5090 class.Check 1000W price
Sizes assume a typical processor. Check your build in the wattage guide.
Other Tier A at 850W
- undefined80+ TitaniumCheck price
- undefined80+ GoldCheck price
- undefined80+ GoldCheck price
- undefined80+ GoldCheck price
Specs
| Tier on my list | A · High-end builds |
|---|---|
| Wattages | 750W, 850W, 1000W |
| Efficiency | 80 Plus Gold |
| Modular | Fully modular |
| Standard | ATX 3 |
| Size | ATX |
| Released | 2024 |
Seasonic Focus GX V4 questions
Is the Seasonic Focus GX V4 loud?
The reviews split. HWBusters found average noise higher than expected for its class and says the fan profile needs work. NikkTech found noise low.
Does the Focus GX V4 have a semi-passive fan mode?
Yes. Both reviews mention a selectable mode where the fan stays off at low loads.
What warranty does the Focus GX V4 have?
NikkTech lists a 10-year limited warranty.
Is the Focus GX V4 better than the Corsair RMx (2024)?
On the lab results so far, the RMx (2024) looks stronger. HWBusters found the Focus GX V4 noisier and less competitive than rivals at its price.
Which Seasonic Focus GX V4 wattage should I get?
It comes in 750W, 850W, 1000W. Match it to your graphics card using the output guide above, or the calculator for your exact parts.
Can I reuse cables from my old power supply with the Focus GX V4?
Use the cables that came in the box. Modular cables aren't standard between brands, or even between generations from one brand, and the wrong cable can damage your parts.