Pros: Small and modular design. Allows me to run better graphics card(s) in my Mac Pro that take more juice than the motherboard can supply, which is just 2x 6pins. Having this PSU will allow me to add another 570 to my system for SLI under bootcamp.

Cons: Fans seem a bit noisy inside my dead-quiet Mac Pro. Not loud but audible, especially if I have my side door off. Maybe I'll try and replace the fans with quieter ones. 8pin PCIe connector only has 6 wires connected on the 8pin connector side and the other is a 6+2 connector. Don't know if the other 2 blank pins are a ground as they should be? Cables are pretty thick so it may be a tight fit in smaller cases. I custom built my own cables so I'm not using them anyways. Would be nice to know as I would run 2 additional wires and make them a real 6+2 conector without jumpering the extra 2 grounds.

Overall Review: I'm using this in my 2009 4,1 Mac Pro and it's been running for the last few months with no problems at all powering a Palit Sonic Platinum GTX570. This card required a 6 and 8 pin PCIe power where the Mac Pro only supplies 2x 6pin on the motherboard and I didn't want to run an external jumpered PSU.

Pros: Large storage. Good temps and low noise.

Cons: failed? clicking and noisy but was quiet when it was working. Customer support is terrible. Been trying to RMA it.. if it's even still under warranty?

Overall Review: I've had this in my 2010 13" Macbook Pro, 2009/2010 Mac mini and 2009 15" MBP with no fitment issues. I did have to do a slight modification to my 2010 mini. Failed so I bought a SSD instead. Make sure this fits your device before buying.

Pros: Small footprint Good airflow Easy to disassemble Build quality is top notch - definitely not cheaply made side doors are heavy and durable Room for large Graphics cards! Using Gigabyte 770 4GB Windforce fully modular PSU recommended and possibly cutting down/shortening cables to reduce clutter.

Cons: PSU right angle power cable was tough to get in as I had to bend it sharply, might have been the PSU power socket was reversed? Side door panel with I/O, although is reversible does make taking side door off a hurdle. I moved my I/O panel to the left side, Also flipped the Power/Reset buttons so they were no longer upside down. Small case (not a con as I wanted as small as possible) so everything will be tight if you have bigger hands like me. I think I did pretty good with the cable managing. Looks like there's mounts for various size fans on the front for 120-140-200-230mm fan but PSU is in the way? Look below as it would be cool to mount a fan on the outside of the case behind the front cover to blow air towards the GPUs.

Overall Review: I installed a Corsair H100i and didn't want to block my PCIe slot for future SLI so I removed the top cover and mounted the radiator on top with the fans inside the case pushing air out(exhaust). This did require some cutting of the metal on the case up top for the radiator and hoses to fit. Also had to cut the plastic around the top cover, like the tabs that hold the screen on but that's no longer used anyways. The radiator sits flush with the top of the case. Wouldn't have mind a mobo tray split down the middle of the case with the PSU and hard drive caddies back there too? Might custom mod it like that anyways. 4770k w/ Corsair H100i MSI Z97m Gaming mobo 8GB HyperX Beast OCZ Agility 3 480GB SSD Gigabyte GTX 770 4GB Windforce Seasonic SS-660XP2 Suggestion to Bitfenix if you read this? If you could somehow make a new front and top cover with a little bit more room in them, it would make it easier to mount more fans/radiators without taking up room inside the case. I'd love to be able to mount a fan as intake on the outside of the case so I can blow air directly onto my GPUs. Just if they were 1/2"-3/4" longer would be ideal or even larger sizes to house a push/rad/pull setup.

Pros: Still running strong after a year +. I don't even notice the fans anymore, I think they "broke in" so I never did upgrade them. I have a thread on MacRumors.com with pictures of the install there. http://forums.macrumors.com/showthread.php?p=18661690

Cons: I haven't had any problems with the ePower Aux PSU. If you only have SATA power connections, you will need to purchase a SATA power to Molex adapter, They are cheap or you can make your own if you have extra cables or adapters laying around.

Overall Review: This is now powering 2 Titans Superclocked inside my Mac Pro. I folded 24/7 with these GPUs overclocked to 1200mhz so this PSU handled them no sweat. I just noticed that these were for sale again so I wanted to update my feedback. January 19 2014. I purchased mine on/around October 2012, maybe earlier.

Pros: Quiet powerful and lots of VRAM!!! Runs 3 27" 2560x1440 like a champ with all settings cranked. I have 3 27" monitors in portrait for a total display size of 4320x2560.

Cons: None that I have found

Pros: Fast. Extremely fast boot speeds. OS-X Lion in under 15 seconds-fully off to home screen(less than 15GB free space). Easy to install.

Cons: As with higher capacity SSD's, the only cons are the price. Waiting for the day when SSDs are the norm and are <$.10/GB.

Overall Review: Installed in my '09 15" Macbook Pro which is only SATAII.