Antec's TruePower Trio 650W
The third musketeer

The TruePower Trio is the third Antec power supply in this round-up, which I suppose is fitting. This model differs enough from the EarthWatts and Neo HE models to warrant inclusion, in part because it's rated for 650W of total output—more than either of the other Antec units.

Like the Neo HE, the TruePower features three 12V rails and active power factor correction. While the Neo is only certified for dual-card SLI configurations, Antec's website claims the TruePower carries Quad SLI certification. Don't put too much stock into that certification, though: with only two PCIe power connectors, the Trio doesn't actually have enough 6-pin connectors for a Quad SLI rig.

The TruePower looks just as drab as the EarthWatts, but instead of settling for a standard 80mm exhaust fan at the rear, it employs a much larger 120mm fan mounted on its bottom panel (top in the picture.) In conjunction with generous venting at the rear, this larger fan should allow the TruePower to exhaust more warm air from the system, lowering temperatures inside.

Larger fans can move more air at lower speeds than smaller units, so the TruePower should run quieter, as well. Its temperature-based fan speed control can also be tied to system fans by way of a pair of fan-only 4-pin molex connectors.

Unfortunately, the TruePower doesn't come with modular cables like its Neo HE cousin. You don't get fancy cable sheathing, either, but Antec's five-year warranty remains.

Voltage delivery isn't a problem for the TruePower. In fact, its voltages are closer to their ideal values than either of the other Antec models. There isn't much deviation as the load ramps from 50 to 100%, either.

The TruePower does provide some more interesting ripple results to look at. With the exception of the PCIe connector's 12V line, which has hardly any AC content at a 50% load, the general trend shows ripple decreasing as the load on the power supply increases. Even at its worst, average AC content doesn't eclipse 14 millivolts.

TruePower efficiency looks pretty good overall, although it does drop as the load on the PSU increases. Still, 79.4% efficiency at 100% load is nothing to be ashamed of, particularly for a model that's over 83% efficient with a lighter load.