Topower TOP-750P7 FEZ

The TOP-750P7 FEZ is almost like the SEZ model except for the design of the card with the output connectors.

The PSUs represent a classic topology. The half-bridge push-pull converter has been used for decades already. This design is simple and cheap, but cannot provide a high efficiency. That’s why most manufacturers have transitioned to various kinds of single-ended converters with high operating frequencies.

All the cables included with the PSU are screened and have a plastic casing. This screening has no practical meaning in terms of the effect on the PSU’s EMI and output voltage ripple, but it does make the cables stiff and unyielding. The photo above shows that the cables hardly fit into their own box while cables of other PSUs are usually just tied into a bunch with a couple of elastic bands.

The TOP-700P7 SEZ has the following cables and connectors:

• Mainboard cable with a 20+4 connector (39cm)
• CPU cable with an 8-pin connector (52cm)
• CPU cable with a 4-pin connector (53cm)
• 6 connectors for HDD power cables
• Two connectors for graphics card power cables

The first three cables are detachable and 50cm long in the TOP-750P7 FEZ.

Included with the PSUs are the following cables:

• Two graphics card cables with 6-pin connectors (70cm)
• Two cables with two Molex connectors on each (49+14cm)

• Two cables with two Molex connectors and one mini-plug for a floppy drive on each (49+15+15cm)
• Two cables with two SATA power connectors on each (50+15+15cm)

The connectors are all equipped with rubber heads that may become a nuisance when you are plugging a cable in. You may even have to find a sharp knife and scrape those heads off the cables.

Interestingly, the PSUs have the same labels as the FR models except for a small sticker above that tells you the full name of the PSU. So, both PSUs comply with the ATX12V 2.0 standard and have multiple +12V output lines. As opposed to the FR models, they don’t have a Split/Combined switch.