Seasonic M12II-430 modular cable PSU

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February 13, 2008 by Devon Cooke

Seasonic M12II-430
430W ATX12V 80-Plus Power Supply
Market Price

Like movies, most pieces of computer hardware are better off without sequels. Good hardware tends to stand on its own, accepting minor tweaks and revisions, while bad hardware tends to get renamed and recreated. Seasonic's M12 power supplies, however, may just warrant the "II" tagged on to the end of their new revision.

As the new name indicates, the M12-II is a significant revision of the original M12 line, and, for now at least, the two lines will coexist. The "II" designation matches the "II" in the recently reviewed S12-II, and the two models share Seasonic's latest circuit design. As before, the "M" designates modular cables, but the M12-II gets rid of the extra 60mm cooling fan and reduces the capacity points to more realistic 430W and 500W models. As a result, the pricing for the M12-II is more mainstream than before; no longer is the M12 a top-end-only product.

Comes in 430W and 500W models.

These new models will be welcomed by those who respect Seasonic's reputation for quality and low noise but were unwilling to pay upwards of US$150 for modular cables. At the time of writing, the 430W model is priced starting at US$110, but this should come down as retail availability improves.


Seasonic M12II-430 Feature Highlights (from Seasonic web site)
Sufficient +12V Support
Enhanced +12V current capability broadens utilization possibilities.
+12V is really the only important voltage line these days.
Super High Efficiency [up to 85%]
Optimal solution for low energy consumption, noise & heat.
We expect nothing less from Seasonic.
Active Power Factor Correction [99% PF]
Reduces line loss & power distortion.
Reduces the current draw, which means less likelihood of tripping your circuit breaker.
High Reliable Aluminum Electrolytic Capacitors
Top quality components increase product life & reliability
A quality-control choice in response to issues with bad capacitors in many home electronics.
Detachable Modular Cable
Use precisely the cables you need, enhance system airflow and minimize clutter.
A value-added feature that allows Seasonic to justify the high cost of the M12-II
Double Forward Converter Circuit Design
Advanced topology for the highest efficiency.
An advanced circuit that has helped Seasonic build their reputation for quality and efficiency.
Double 12cm Ball Bearing Cooling Fan
Increases airflow & lifetime and reduces rotation speed and noise.
Perhaps this should read "12cm Double Ball Bearing Fan"? Whatever it means, there is only one fan...
Smart & Silent Fan Control [ S²FC]
Smart thermal control to balance noise & cooling.
Seasonic's usual quiet fan control circuit.
Soft-Mounting Rubber Cushions
Reduces fan rotation & vibration noise.
We can't complain about noise reduction!
Ultra Ventilation [Honey Comb Structure]
Minimized airflow resistance for maximum cooling.
Good ventilation is key for quiet performance.
All in One DC Cabling Design
Supports PC, IPC, workstation, server, & dual CPU systems.
Includes an 8-pin EPS12V CPU connector for dual CPU systems.
Universal Video Card Support
Support new PCI-E video card technologies
Two PCIe connectors for SLI / CrossFire.
Universal AC Input [Full Range]
Plug & run safely anywhere in the world.
Patented Easy Swap Connector
Unplug the connectors easily & quickly.
Quickly becoming redundant as IDE connectors fade from use.
5 Year Warranty
Our Commitments to superior quality.
A better warranty than most hardware...


AC Input
100~240Vac; 50/60 Hz
DC Output
Output Current
130W 360W
Combined Power
Operating temperature: 0 to 50°C. Relative Humidity: 20% to 80%.
(The rated power will reduce from 100% to 80% from 40°C to 50°C)

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