Seventeam ST-750P-AF Power Supply Review

Conclusions

It is good to see Seventeam finally entering the US retail market. From our experience their products are honest and present a good cost/benefit ratio for the mainstream user.

Talking specifically about ST-750P-AF, it presents high 84%-85% efficiency when you pull between 40% and 60% from its labeled capacity, i.e., between 150 W and 450 W from it. Under other loads efficiency isn’t the best in the world, but at the same time isn’t the worst.

The number of available cables is enough for the user building PC with one high-end video card. If you want to install two or three video cards you will either need adapters or a different product, as each high-end video card needs two connectors each to operate.

The only drawback from this power supply is the electrical noise level. Even though it was below the maximum allowed, we wanted to see noise and ripple at lower levels. Usually power supplies with high noise levels we give our Silver Award, but considering that this unit costs only USD 130 it presents an outstanding cost/benefit ratio for the user looking for an honest 750 W power supply, and that is why we are giving this unit our Golden Award seal.

We’d like to remember that internally this power supply is identical to Seventeam ST-750Z-AF and SilverStone ST75EF, so all performance considerations are also valid for these other two products.

The only feedback we need to give to Seventeam is for them to fix their website and product box and replace "Japanese capacitors" by "Japanese capacitor on primary" or similar wording, as "capacitors" lead the consumer to think that all capacitors inside the power supply are Japanese, which is not the case.

Here is the answer from Seventeam regarding this issue: "this is actually a translation mistake by our part, it was described in Chinese as Japanese Big Capacitor, but somehow translated into plural description in English. But thank you for pointing this out, we will correct this mistake."