When the dust settles and the system has been booted down, we end up with a power supply that has gone a long way to be compatible with any type system currently on the market. The features are what they were promised to be and performance was very good with the exception of the internal fan issues we just talked about. Overall a solid performer in a market flooded with power supplies at every price range.
I liked the small LCD attached to the side as it gives you internal temperatures at a glance through the enclosure window. The lighting isn't too bright and comes off well by bringing a subtle effect to the interior of the case. The ability to adjust the 3.3v power rail is also a very nice feature since it gives you a little more overclocking room when using high-end memory modules. The feature list is certainly impressive on this PSU.
The only real issue I discovered was the fan speed adjustment creating such a large difference in power along the entire 12v rail. With PCI-E coming into its own, this may not be a concern to you, but if you're still running AGP graphics in your system and plan on using the higher fan speed settings, it may be very important.
As far as price goes, this particular model has a MSRP of $159.99US, but you should be able to find it online at less than $130 easily. This makes it fall into the higher end of the 500w PSU spectrum, but you'll be hard pressed to find a feature set comparable to the one offered with this model.
Bottom line... If you've been looking for a power supply that doesn't fall into the category of "just like the others", then the SinTek 500 SLI should be a consideration for you. It has features that are above and beyond of most other models available and the compatibility to handle anything that falls into a semi-modern category of system. It is, however, more designed for the PCI-E boards with the stated voltage issue when using the internal fan speed rheostat.
Very stable power along all voltage rails
Modular design makes for easier cable management
Subtle LED lighting on the 120mm fan
Adjustable voltage levels to 3.3v rail and PCI-E devices
Braided wiring harnesses
Heavy voltage drop to 12v rail when using fans at high speed
Rating - 8.5 out of 10