be quiet! Pure Power 12 750W (BP003EU) review

The Pure Power 12 750W is an ATX power supply with a single 12V rail. It is rated at 750W continuous and 820W peak, with 62.5A on +12V1. It is ATX 3.1 compliant and PCIe 5.1 compatible.

The cables are fixed, so every lead stays attached whether you use it or not. That is the main trade-off, and the rest of the unit is built around a quiet fan, a long warranty and current connector standards.

The unit has eight cables in total. There is one 20+4-pin motherboard cable, one P8 8-pin CPU cable and one P4+4 CPU cable. For graphics it has one PCIe 5.1 12V-2x6 cable rated for 600W and three PCIe 6+2-pin connectors. There are six SATA connectors and one PATA connector.

The native 12V-2x6 cable means a recent high-power graphics card needs no adapter. With three 6+2-pin plugs and one 12V-2x6, the unit suits a single-GPU build more than a multi-GPU one. Six SATA connectors cover a handful of drives and SSDs, but a storage-heavy build will use most of them.

The non-modular design is a drawback. One owner report calls it a poor fit for some buyers. In a small case, unused cables need somewhere to go. Another single report says the box arrived without PCIe GPU cables and that support did not respond. That is one source, so treat it as a caution to check the contents on arrival, not a pattern.

The unit carries an 80 PLUS Gold rating, with efficiency of up to 92.8%. The manufacturer's figures at 230V show how that varies with load: 68.4% at 2%, 88.5% at 10%, 92.1% at 20%, 92.8% at 50% and 90.7% at 100%.

The peak sits at half load. The 2% figure is low, so a machine that idles at a tiny fraction of 750W will draw it from the weakest part of the curve. For an always-on box with a very small load, that is worth knowing. Be quiet! doesn't publish a Cybenetics rating.

The fan is a 120mm be quiet! rifle bearing model with a 4-pole motor and a maximum speed of 1800 rpm. The manufacturer's noise figures are 8.7 dB(A) at 10% and 20% load, 8.8 dB(A) at 50% and 22.5 dB(A) at 100%. The figures barely move from 10% to 50% load, then rise at full load.

Owner and reviewer feedback matches the specification. Reports praise quiet running under sustained load and at idle. Much of that praise comes from reviews of the related Pure Power 12 M 750W, so it points to the same fan and platform family. It does not come from this fixed-cable model alone.

The manufacturer lists overtemperature, overcurrent, overpower, short-circuit, overvoltage and undervoltage protection, plus surge and inrush protection.

The single 12V rail delivers up to 750W combined. That simplifies load balancing, because there are no separate rails to manage. Independent reviews cited mostly cover the 12 M and 1000W variants, so voltage regulation and ripple figures for this exact model are not something this review can quote.

The warranty runs for 10 years. Owners cite it as a reason to buy, and it is the clearest strength of the package. For a PSU that may sit through several motherboard and GPU upgrades, a decade of cover is a practical benefit. It also offsets some of the concern about the single support complaint, though that complaint remains a single report.

This is a quiet, ATX 3.1 power supply with a native 12V-2x6 cable, Gold efficiency and a 10-year warranty. Its weak spots are the fixed cabling and the three PCIe 6+2-pin connectors. It suits a single-GPU build in a case with room to tuck cables away. If you want to remove every unused lead, or run several power-hungry cards, look at a modular unit instead.