Although some users still overlook the need for a reliable power supply unit, those more experienced understand the necessity of a PSU which handles strong and steady voltages on all the rails. Fortunately in 2006 few should have a problem picking a unit which exactly fits their needs as the market is literally saturated with models.

Today we will take a look at two power supply units from NorthQ in the shape of the 4001EXT and the 4775-400, which are rated for 400W maximum output. Although their rated total power output is the same and their basic architecture is akin, we will soon see that they are two entirely different units. Let us have a look at the specifications first.

Manufacturer specifications (4001EXT)

Key Info:

Standard ATX 400Watt PSU.
140mm Fan installed.
Fan Speed Control Function Inside.
Noise: 12 - 17db noise level.
Passive PFC.
2 x S-ATA Connector .
75Watt PCI-Express.
Lifetime: 50,000 hours at 25°.
Dimension:150*86*160mm(W*H*L).

Cable configuration:

1 x 24/20pin ATX cable.
1 x 4pin motherboard extension cable.
1 x 6pin PCI-Express cable.
2 x S-ATA plug on 1 cable.
7 x Molex plug on 3 cables (2 with 2, 1 with 3)).
2 x Floppy plug on 2 cables (1 on each cable).

Total of 7 cables from Power Supply

Manufacturer specifications (4775-400)

Key info :

Standard ATX 400Watt PSU.
ATX 2.0 standard.
Passive PFC.
24-pin ATX extension.
140mm crystal clear fan installed.
Fan speed control function inside.
Noise : 12 - 17db noise level.
Full cable sleeving.
4 * S-ATA lines.
75Watt PCI-Express line.
Cables extended with 10cm to full 60cm and 40cm for the P4 extension.
20-24pin converter for new motherboards.
Titanium coated.

Cable configuration:

1 x 24/20pin ATX cable.
1 x 4pin motherboard extension cable.
1 x 6pin PCI-express cable.
4 x S-ATA plug on 2 cables (2 on each cable).
7 x Molex plug on 2 cables (4 and 3 on cables).
2 x Floppy plug on 2 cables (1 on each cable).

Total of 7 cables from Power Supply.

Lifetime: 50,000 hours at 25°.
Dimension: 150*86*160mm (W*H*L).