I use a SFX PSU on my Hadron, I gave up on the 1U original EVGA psu... I had to put the sfx psu where the drive cage was innitialy, and my SSD now sits inside the case on the back side of it, glued there with double-side tape. Not the most elegant solution, but works fine, and it's visually acceptable. The only concern I have to address is the original PSU hole that's open in the case now, but you can get a piece of metal, paint it and get it in there, with a 3-pin power outlet on it...
SFX psu from SilverStone comes in 450-600W (max for now), modular, and they are really silent... oh and also 80+ Gold too. I don't know for sure, but I think they are cheaper than a decent 1U PSU.
 
note: you can see a little damage I did in the PSU, but it's my fault, it came to me well packed.

Lol yeah you are right.... (about damage...)
About replacement 1U PSU's, here's some 700W ones:
http://www.fspgroupusa.com/ecommerce/ipc-psu/1u/700w/fsp700-801uk.html
http://www.newegg.com/Product/Product.aspx?Item=N82E16817103045
 
I may be wrong, but I saw an Hadron PSU review stating that it may be produced by FSP... Can't recall now...

My hadron PSU only ever made noise at startup with a 3 second burst at full RPM's
After that it was silent.
 
No longer have the case, but do have the psu.

Thanks for the replies and I took quite a while to answer lol
Yeah, it seems a different power supply will be the route to take once it's time to replace this one, which luckily works so much quieter with the noctua+kaze combination.
I think I could fit a sfx psu where the current one is without much trouble due to the modification I have done on the case. Haven't taken any measurements of the space left but I'm hopeful.
 
Here is what I have done btw: 

The N1 is a bit expensive as well and doesn't come with a psu or isn't as "nice looking" imo.

If you are willing to spend an extra 20 bucks, you can replace the psu fan with a noctua 40x10mm + scyte kaze mini 40mm and it will shut up the psu for good.

Flip the gpu like I did and you will have enough space to fit a sfx psu where the current psu is.

I think warranty for PSU is same as for Hadron case, I mean warranty period.
But probably is possible to buy and only PSU later... Or to ask EVGA or to search over net...
I saw on this link, they say Available, but I don't know price and probably some other stores sell.
 
http://www.wired2fire.co.uk/evga-hadron-1u-500w-power-supply-gold-80-plus-rated.html
 
It's very hard to find PSU of same type with good performance, in Black color probably impossible.
Some manufacturer offer but probably only if someone want to buy 100+ maybe and build some RIGs of them, not as normal offer.
And over 500W is again very hard to find. 

That size is biggest 500W for Gold Standard.
They have 600 and 700W 1U Platinum but maybe little longer.
 

I,ve havent worked much on electronics so from an entry level standpoint of skill, how easy is it to replace fan on a psu?  im interested in replacing my hadron air psu fan with the noctua everyone speaks of

jeremynandrew
I,ve havent worked much on electronics so from an entry level standpoint of skill, how easy is it to replace fan on a psu?  im interested in replacing my hadron air psu fan with the noctua everyone speaks of

Do at your own risk but it is quite simple. Keep in mind you are most certainly voiding the warranty on the PSU, and if something goes wrong you will have no one to blame.
 
Things to note:

• The Scythe + Noctua mod does not fit 100%, and there is leftover space. If you look at the Hadron PSU you can tell the sides of the PSU are open air where the fan is, so unless you make a shroud out of paper or duct tape you're going to introduce dust into your system.
• The fan itself is connected with a 2-pin fan header instead of a 3-pin fan header. Not a huge problem.
• When I tore apart the PSU I thought I could desolder where the fan connects to the board, or (best case) replace the plug that it mounts into... no dice. The PCB is crammed and you'll have a hard time trying to desolder as it IS soldered down to the board, which led me to this solution:

 
1. Take apart PSU, unscrew fan from case
 
2. Cut (as in physically cut with scissors) the two wires from the fan. You should leave some slack but not too much. Slide some heatshrink tubing on both cables.
 
3. Solder the red and black wires from your fan(s) to the red and black wires from what previously was the PSU fan.
 
4. Wrap cables in electrical tape and then heat the tubing so it compresses (we don't want your fans shorting out.)
 
Bam, done. Easy job but if you don't know how to operate a soldering iron I wouldn't suggest learning with this specific instance let alone tearing a part a high current power supply.