Yes I had to change to 1300 Watt PSU even running 1 unit stock the other with modified PSU i noticed a reduction in HW Errors so I say a PSU upgrade is a must. When I get to work later I will post instructions on which files to modify and settings for 200Mhz Clock. I am putting together a chart of Clock Speeds with GH gain and Watt increase so far I am up to 1.1TH Average for 71 Watt increase from Stock. Just FYI the 200MHZ clock is already loaded in there but modifying the file is a little different then on the S1's I will post some screen grabs and step by steps on this soon

Typo corrected

I am glad I picked up my S2's Before 1.) They sold out 2.) Eliminated the $400 off coupon 3.) this over priced do it yourself kit is the only option  

I agree they probably have the new chips going into there S2's in the farm so there selling the guts of them to the community then once they use them all at the new 2TH speed for a while they will open up a board upgrade sale to the community for us to do a self upgrade of our units with a new board and or Power Supply as Bitmain had suggested in the next month or 2 but my gut tells me he has them now and is using them all in his farm

I think since the S2's are modular and he has stated he will have a low cost upgrade to 2TH in a few months I don't see why if you runt hem log enough and do the upgrade you cant recover you investment. I think the beauty of the new S2 design is the upgrade able PSU and blades all he needs to do in the future is sell his client new blades with his new chips to increase hash rate per watt as he evolves. personally I think its a great move. Glad I ordered my S2's with the coupon right before he dumped them all from everyone's accounts. So far my batch 4 Units all arrived safe and in good working order one of them even had a metal plate inside to hold the cards in place this was not on my first unit, that one only had the rails which also worked but this design is even better

I agree I think that's the way to go

Any one figure out the Freq and time out settings for the S2 with 64 Chip Chains?

He said he upgraded to a 2000W PSU in a previous post
Can you share your Hex and Timeout values for those 2 settings you tested?

When I was talking to them they said they might actually increase the chip count on each board for the upgraded version

So rumor is there is a 140MH unit in the works   

I have found out some info on the OC of the S2 Please follow my new thread here I will keep it updated with my progress
https://bitcointalk.org/index.php?topic=629997.0

Since there is scattered info on the Antminer S2's I thought it would be a good idea to start a thread dedicated to the support and overclocking of the newer S2's

So Far I have replaced my PSU with a newer Enermax 1350Watt Platinum rated as I believed the stock PSU was pushed to close to the limit, this should add some additional head room to OC the boards

My first attempt to SSH into the unit has failed look like the SSH password is not the same as the web interface does anyone know this? SOLVED

WEB LOGIN root
WEB PASSWORD root

SSH LOGIN root
SSH PASSWORD admin

OVERCLOCKING STEPS *PLEASE NOTE THIS IS DONE AT YOUR OWN RISK* IF THIS WORKS FOR YOU PLEASE DONATE FOR THE TIME I INVESTED IN THIS IF YOU FEEL IT WILL MAKE YOU MONEY

Step 1 Using Putty  or another program SSH into your Miner
Step 2 Click "YES" on the "Security Alert" that pops up
Step 3 Login with User: root Password: admin
Step 4 Type "cd /config"
Step 5 Type "vi asic-freq.config
Step 6 Hit the "I" key to edit the file
Step 7 Scroll the the bottom and copy this code and click in the SSH window to paste it (I suggest you start with the 212M Settings run it for a few hours make sure your miner is stable then work your way up)
    option 'freq_value'    '5082'  #212M
    option 'chip_freq'     '212.5'
    option 'timeout'       '36'

    #option 'freq_value'    '6206'  #216M
    #option 'chip_freq'     '215.625'
    #option 'timeout'       '37'

    #option 'freq_value'     '5102'  #219M
    #option 'chip_freq'      '218.75'
    #option 'timeout'        '38'

Step 8 be sure to add "#" in front of everything listed on the 196M line
Step 9 Hit "esc" then type ":wq"
Step 10 (IMPORTANT) type "cp asic-freq.config /etc/asic-freq.config"
IF YOU SKIP THIS STEP ALL SETTINGS WILL BE LOST WHEN YOU POWER CYCLE THE MINER
Step 11 Now Login to the web interface of your miner and go to the miner config tab and click "save and apply" this will restart cgminer with the new settings

Based on my testing here is how my miner performed at each speed

212mhz     1083GH     (+56 Watts)(+80GH Speed)(HW Error 0.22%)
216mhz     1098GH     (+71 Watts)(+95GH Speed)(HW Error 0.39%)
219mhz     1114GH     (+90 Watts)(+111GH Speed)(HW Error 0.88%)

Keep in mind your results might vary. Enjoy and happy mining  

Seems like root access via SSH has a different password then the web interface does anyone have that? I wanted to poke around and test some OC Settings I upgraded to a 1300 Watt Platinum PSU. Will old Clock settings work on the new S2's?

Current interface on the A2 needs a lot of help this is where the dev community will come in. We should try and port some other existing mining platforms over and adapt it for the A2 chips

has anyone attempted upgrading to a new 1300 Watt PSU?

How much you looking for? pay in LTC?

Wow yeah Thialiand enough sa

Thanks for the detailed pics I cant wait till the regular orders open up so i can order one 

Hope Bitmain releases more soon

Any ETA on when our accounts will be back online I have money frozen in there?