Enermax Infiniti 650W

Modular Fun

The unit itself is the same physical size as the Infiniti 720W and even has the same cables coming from the PSU – one 55cm 4+4-pin, one 50cm 24-pin ATX connector and one 55cm 6+2-pin PCI-Express connector. All the cables feature the same black braid with white stripes and the quality of the connectors and heatsrinking is very high.

The brushed gunmetal finish also looks fantastic and the whole thing is cooled by a single 135mm fan in the base that vents out the honeycombed rear. Enermax also includes unique features like CoolGuard, which continues to power parts of the system after shut down to keep the fans running in order to cool stuff off.

Depending on the temperature within the power supply, and by extension, the case as well, it’ll either keep stuff running for anywhere between 30 seconds and two minutes.


PowerGuard is the other feature that indicates the PSU state by combination of LED and internal speaker within the PSU. Having used the Enermax Galaxy units (which also have this feature) for quite a while on our graphics test rigs, we’re aware that this can actually be quite useful should something be shorting somewhere or it feels unwell. While sometimes it’s common sense that comes to the same judgement, if you don’t have another PSU to test with it can help rule out whether or not the PSU is the cause of the problem easily.

There’s enough space to get a finger between the modular connectors when you want to plug/unplug one between many, however the pins for quite a few didn’t seem to align properly. This required us to use the “force, wiggle and scream at it” technique perfected from years of PC use, and eventually the stubborn ones surrendered to our efforts.

Supplied Cables

• One 55cm white and black braided 6+2-pin PCI-Express cable;
  
• Two 50cm, white and black braided 6-pin PCI-Express cables;
  
• Three 50cm, white and black braided cables with three Molex plugs;
  
• Two 50cm, white and black braided cables with three SATA hard drive plugs;
  
• One 50cm, white and black braided 4-pin 12V plug;

It’s almost exactly the same cable set as the 720W version, however there is one less SATA cable included. Unlike the Ultra X3 units, which restrict the 600W to only two PCI-Express 6-pin connectors, Enermax feel that its 650W can handle four of them.


At first I was a little worried in that respect, because if you do plan to use every connector you could easily reach the 650W limit with a couple of Radeon HD 2900 XTs or four cards in CrossFireX, an overclocked quad-core and a load of hard drives. However Enermax has intentionally made one of the 6+2-pin PCI-Express connectors take up two of the black modular sockets meaning there are only four connectors spare instead of five.

That still means a total of twelve drives or peripherals can be throw in, meaning that there’s the possibility that you could stress a 650W unit quite heavily. You’d need to be unintentionally skimping on the PSU though, and I don’t think the vast majority of you reading would do this, although it’s still possible.

The cables are also completely limited in variety to a single length offering three connectors, which kind of defeats the point of having a modular system in some respects. Sure, you get to plug in what you need but what if you need only one or two plugs or some far longer or shorter cables? While you could never cater for every possible situation, having some variety is usually better.