Articles: Cases/PSU
 

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The total output power of the PSU is 700W and it can yield 680W via the +12V rail divided into four output lines.

The PSU is equipped with the following cables and connectors:

  • Mainboard cable with a 20+4-pin connector (55cm long)
  • CPU cable with a 4+4-pin connector (55cm)
  • Graphics card cable with a 6+2-pin connector (55cm)
  • Graphics card cable with a 6-pin connector (55cm)
  • Two SATA power cables with three connectors on each (48+22+22cm)
  • Two cables with three Molex connectors and one floppy-drive plug on each (55+20+20+20cm)

The PSU is obviously meant for one graphics card (or two cards each of which has only one power connector) although it might easily power up a couple of top-end cards in SLI/CrossFire mode. Alas, you have to use adapters from Molex connectors in that case.

A light smell of hot insulation could be felt when the PSU was working at a load of 680W but there were no other problems.

The output voltage ripple at full load is overall acceptable but individual spikes on the +5V and +3.3V rails are higher than the permissible 50 millivolts. So, the PSU is in fact at the limit in this parameter.

The cross-load characteristics do not impress. Although green dominates the zone typical of modern PCs (a high load on the +12V rail and some 50-60W on the +5V and +3.3V rails combined), I have to note that the PSU doesn’t deliver the declared load of 155W on the low-voltage rails because the +5V voltage sags below the permissible limit (4.75V) much sooner.

But it is the noise level that proves to be the main problem with this PSU. The Atomic Juice’s fan is loud even at minimum load, working at 1300rpm. Its speed grows up linearly together with the load, reaching 2000rpm (the controller must be unable to give a higher voltage to the fan). As a result, the PS-700 is so loud that I wouldn’t recommend it even to undemanding users. It will surely drown the voices of other PC components in its annoying hum.

A few years ago new power supplies from FSP used to feature high efficiency, but now they look nothing but modest in comparison with their current opponents. This PSU is 85% efficient at the peak and 82% efficient at full load. I have to admit that the Atomic Juice has the worst result among the five PSUs covered by this review in terms of efficiency.

In fact, the Super Talent Atomic Juice PS-700 might be a good mainstream power supply if it were not for its noisiness. I have no complaints about the quality of manufacture. The selection of connectors is suitable even for an advanced gaming configuration. The electrical parameters are not outstanding, yet acceptable. Alas, the PS-700 produces distinct noise even at minimum load, i.e. in idle mode virtually. This noise is so distinct that I would not recommend this power supply even for users who are not fastidious about noise, just because there are a lot of models available on the market that are going to be far more agreeable to your ear.

 
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