Sounds good to me, if that 1300w EVGA can power 3 blades overclocked to 500GH/s should be the one for me at least, i will have a look and see if i can get that corsair 600w one cheap as well.

Those server based PSU's are some of the most efficient it does depend on the power supply of course but they have to be due to fixed limits on power for servers when in datacentres and colocation.

I agree that maybe it has better sell on value than the modified one but I definately want to overclock and price for buying the hardware is bad in the UK, i know that the system can support 3 of them from one PSU but thats without overclocking, i dont know how much power extra is required per unit.

So if i wanted to push the clock on the S3 up the EVGA would only really power 1 overclocked and 1 standard clock am i correct?

Also for me that power supply is £155, I can get 6 of the 750w ones for £230 (inc shipping) and its a 1:1 overclocked as they come with 4 x 6pin plugs on each, i have three S3+ on order now and want to get three more later on (funds allowing) so i was going to buy 6 now (shipping from hong kong)

So basically they cost less to acquire than the EVGA one and they support overlclocking of the units as well.

would this power supply work well for the AntMiner S3+?

http://www.eyeboot.com/Bitcoin-miner-Accessories/6-pin-power-supply

Start mining other coins and dont bother with bitcoins the boat has sailed one might say, hope that the value of other coins goes up or dump lots of money on hardware to keep up with the difficulty increase.