FSP PSU Roundup - 500W, 700W and 1kW - FSP 700W FX-Epsilon PSU

Article Index
FSP PSU Roundup - 500W, 700W and 1kW
Testing the 500W Blue Storm II
FSP 700W FX-Epsilon PSU
Testing the 700W FX-Epsilon PSU
FSP 1000W Kingcraft PSU
Testing the 1000W Kingcraft PSU
FSP PSU Roundup Final Thoughts

FX-Epsilon 700W FSP PSU:

This is the middle of the road unit from FSB that is labeled as "Ultra High Performance" on the box.  This box too looked like it had been opened by several dozen people, but there was a power cable included this time.  The Epsilon has four +12v rails and offers users a little more performance and hopefully stability that comes with additional rails.  This is a non-modular unit as you can see by looking in the box, and it comes with come Velcro cable management straps which are actually a simple, yet welcome addition.

 PSU Box
PSU Box
In The Box
In The Box
Bundle
Bundle

 

There are a lot of cables on this blue PSU and like the 500W little brother, they are sleeved as well.  These cable come sleeved in black and blue though and the blue cables are for the PCIe connectors.  Speaking of connections, this thick bundle comes with two Floppy connectors, six Molex, six SATA, 4/8-pin power, 20/24-pin motherboard and the afore-mentioned two PCIe connectors.  It's got enough for most SLI systems if you're not using 8800GTX or 8800Ultra graphics cards.  The cables all exit the PSU at a single point as this is a non-modular PSU.  After using modular PSUs for so long, I have to admit that I'm a little spoiled and I'm not enjoying the fist-full of cables that have to be tucked somewhere in a mid-range system.

 Bundle Of Cables
Bundle Of Cables
 PSU Profile
PSU Profile

 

On the near side of the unit is the label for the specifications.  The FX-Epsilon can serve up 18A on each of the four 12v rails as well as 36A on the 3.3v line and 30A on the 5v rail.  These give us a raw total of 864W on the 12v rails while FSP conservatively states 525W.  The 3.3v and 5v lines are capable of a combined 268W, but once again FSP has wisely taken the conservative route and claims only 155W.  I like to see companies under-rate their rails in the specifications as no PSU will fully reach its rated output per rail.  Total theoretical output on this PSU is over 1150W, but I'm sure it cannot come anywhere close to that.

 

PSU Label
PSU Label

 

This PSU is physically quite small for a 700W unit and it was with great interest that we pulled it apart to see what was inside.  There is not as much room inside as they 500W sibling, but it is still pretty empty.  Once again this is due in part to the lack of massive heatsinks.  If a PSU is efficient, it won't generate as much heat and it can easily be cooled with a single 120mm fan.

 PSU Fan
PSU Fan
 PSU Inside
PSU Inside
PSU Inside
PSU Inside

 

On the next page we'll briefly cover testing before we take on the 1000W Kingcraft.