Akasa PaxPower 460W Power Supply - Akasa PaxPower Review


The PaxPower unit sports two S-ATA power connectors. These are full range connectors, which add support for 3.3V S-ATA devices, something that you don’t get if you’re using converters. So far I have not come across a 3.3V S-ATA device, but at least the PaxPower is ready for when it happens.

The ATX power cable has a braided plastic sheet around it which keeps it tidy and the other cables are all tied up with cable ties to reduce clutter.

There are only six Molex connectors, but these are special connectors that Akasa calls easy-fit, but easy-release is a more apt name. The Molex connectors have a special design that allows for them to be removed easily – pressing down either side of the connector will push it free from the device. Two floppy drive connectors are also fitted.

Also supplied is a set of four black screws to mount the PSU and a power cable, basic things, but if you’re short on either you’ll be glad to find them in the box. The final thing in the box is a power splitter, which is a good inclusion. This allows you to connect up a high-power fan to the PSU instead of the motherboard, ensuring that too much power won’t be drawn from the motherboard. Cleverly the cable supplied allows the speed of the fan to be monitored as there are pass-through wires for this purpose.

The only thing missing is the new six-pin connector for PCI Express graphics cards, but hopefully retail PCX graphics cards will come with a power converter when they start to appear.

Reading the back of the box, Akasa claims 75 per cent efficiency at full load, which is over the 70 per cent that the new specification demands. This means that less power is wasted when it is converted from AC to DC.

Looking further at the specifications of the PaxPower 460W PSU the maximum load on the 12V rail seems quite low initially, as it is rated at 14A with a peak of 16A, which is about half of that of other PSUs. But the second 12V rail adds another 15A which puts it in line with what you would expect to see from a 460W PSU. The 3.3 and 5V has a max load of 30A which is fairly normal for a high-end PSU.

Looking at the wattage rating, the 3.3 and 5V rails have a maximum combined load of 210W which leaves the remaining power to the 12V rails and to the -12V and +5Vsb, with the latter only having a minor impact on overall power drain – the typical drain is about 10W each. Akasa hasn’t included the exact numbers, but with a rough calculation this leaves about 230W for the 12V rails.