@tankskun & ally,I can not tell you where i got the psu from becasue of the forums rules but i got it from the only place that seem to sell these and paid £117 with free P&P its on offer at the moment for £111.
The psu comes in a hugh box and well packed the box even ozzes quality never mind the psu, the psu came in its own pull cord bag,lol and has a seasonic sticker to place on your case if you wish and the cables come in 2 pouches.
i own a antec 480w psu from 5 years ago which i still have in my 5 year old pc and is also one of the first modular that antec did i can not remember the name but that cost me £90 back in the day.
this seasonic psu seems to be very very high in build quality and uses high quality parts even the fan inside is of high quality. I have yet to try it as i have not got the rest of my parts but should have it all up and runnign in the next couple of weeks but what i have read is that this psu is silent as the fan does not come on until it needs to and even then i have read that you can not hear it.
What i did like is that this is the first psu that shuts the fan down when the load reduces on the machine as many psu`s turn the fan on at load or when it gets to a high temp and when it reduces the load or temp the fan does not turn off only the seasonic gold does this which i liked.
I read that it takes a lot of load or even high temps for the fan to even come on.
I was going to go for the corsair 650w HX but £99 and for only £18 i went for the seasonic as the corsair 650 TX dont use seasonic insides like the 650hx which is the bronze psu version i think.
just happy that it will power the computer thought i might of done a boo boo on that.
should look nice in the fractal case and with the black asus motherboard.
just need to figure out what led to use on the hd side of it as the fractal does not come with one i was going to stick it at the bottem of the case to reflect of my bench but i can not get any info on what the current is on motherboards as voltage does not matter its the current i need to figure out as the current will damage the led if to high or if the leds current spec is to low.