This is the most high-end power supply we’ve seen to date and it has several technical advantages over other high-end models. The most important one is the use of two independent transformers, creating two physically separated +12 V rails, one used for CPUs and other used by peripherals. This design ensures that the power supply can really deliver its announced power and also that peripherals won’t send noise to the CPUs thru the power line. This is the first time we’ve seen someone using this terrific approach.

Another technical advantage is the use of two completely separated circuits for the +5 V and +3.3 V outputs. While other high-end power supplies use separated rectifiers for these two lines, the rectifiers are still connected to the same transformer output, what doesn’t happen with Galaxy 1000 W, where each output has its own exclusive transformer output. This is also the first time we’ve seen such terrific design.

As for the total power announce by Enermax, one kilowatt, we have great news, even though we didn’t have the necessary equipment to make a true power supply review – we would need to create a real 1,000 W load to check if this power supply could deliver its labeled power or not.

First, the labeled power is rated at 50º C. Why is this important? When the manufacturer doesn’t state the temperature it usually means 25º C. The problem is that when the power supply temperature is increased, its power delivery capability is decreased. This means that a 500 W power supply rated at 25º C won’t be able to deliver 500 W at 50º C – thus this power supply isn’t really a 500 W part, as your power supply will NEVER run at 25º C. Power supplies typically run between 35º C and 40º C. So Enermax is saying that this power supply will deliver 1,000 W even when running hot.

The second thing that is really impressive about this power supply is that all power components can handle much more current/power than stated by Enermax.

An third, if you do the math using the power supply label you will see that this power supply can deliver more than 1,000 W, and Enermax was very conservative labeling its product – on a market flooded with power supplies with “inflated” power specs, this is simply awesome.

Other features from this power supply include high efficiency (meaning a reduction on your electricity bill), active PFC, the use of high-end components, modular cabling system, two fans (with a speed monitoring cable on the smaller fan for you to monitor it using your favorite monitoring program) and several protections. Talking about protections, this unit has a buzzer that will beep if something goes wrong.

With four auxiliary PCI Express power connectors for your quad-SLI system and two EPS12V connectors – supporting up to four CPUs –, you will be able to use this power supply with your very high-end desktop or server.

We were very impressed by the components used inside this power supply, all high-end. From the rectifiers used, we can say that this power supply can probably deliver its rated 1,100 W. Unfortunately we don’t have the necessary equipment to make a true power supply review; we would need to create a real 1,000 W load to check if this power supply could deliver its labeled power or not.

Galaxy 1000 W is a very expensive power supply, though, quoted at USD 360 in the US, three times higher than the average price of good 550 W units. If money isn’t an issue for you this is probably the best high-end power supply money can buy.

The only flaw we can say about this product is the absence of a MOV (Metal-Oxide Varistor), which is a transient filter, on its input filter.