As is often done with high performance power supplies the cables on the ST65EF are not modular - they're all hardwired. By doing this you can eliminate not only a possible point of poor connection but it also helps to greatly reduce the resistance in the cable as well, allowing for longer cable lengths. Of course a non-modular chassis is also significantly shorter than a modular one and will allow you to use the power supply in smaller cases. All the cables are sleeved in a black mesh and all the cable ends are also black to keep things very uniform looking. Connector layout is as follows:
1 x 24 / 20-Pin Motherboard connector
1 x 8 / 4-Pin EPS / ATX 12V connector
4 x 6-Pin PCIE connector
1 x 8-Pin PCIE connector
6 x SATA connector
6 x 4-Pin Peripheral connector
2 x 4-Pin Floppy connector

In order to achieve the 80PLUS Bronze certification, the 80PLUS organization says that the power supply must perform at over 82% when at 20% load or higher. The ST65EF pulled that off just perfectly earning it the title of an 80PLUS Bronze certified power supply - a rating not nearly as abundant as the regular 80PLUS power supplies on the market. When a power supply has a high efficiency that means that it better uses the power coming from your wall socket and that less power gets turned into heat. Not only does that help on your electricity bills but it also contributes to the power supply running quieter. When there is less wasted power being turned into heat that means there is less heat there for the temperature controlled fan to cool - thus allowing it to spin alot slower and quieter.

One con I've found in a lot of the expensive power supplies I've reviewed here lately is the use of multiple, low amperage 12V rails. Although this looks good on paper and does have some pros, it's actually a very poor design when it comes to accommodating the latest and greatest hardware. I'm speaking mostly about video cards. With a lot of very high end video cards that require over 20 Amps on their own it becomes hard to use them on a quad 12V rail power supply with each rail putting out 18 Amps or less. Why spend so much money on a high end power supply if it won't accommodate the expensive video card you plan on buying next? Silverstone chose to use a dual +12V rail design on the ST65EF, with one rail having a 20A rating and the other having a 30A rating for a total combined rating of 50 amps and 600 watts.