That's what I meant. To a native English speaker in that context it still reads "why should they pay".  I knew you didn't mean this.

Lost in translation I think...

Don't see a reason why he WOULD do this...
i.e. Unacceptable behavior

Well, unless my calculations are very much mistaken next difficulty update will be so long and thanks for all the fish time for my CM1s  

With one more circa. 30% increase in difficulty I'll only just be covering my power costs @ £0.09926 per kWh including VAT @ 5%.

Well, the temperature will be dropping soon here in the UK - perhaps I'll redeploy them into a less friendly environment as a frost protection heater for the winter

Thanks! Will try this out.  It's just sad that due to lack of cooperation from Enterpoint it's taken this long for a benefactor to get one to you. 

Sadly, the CM1's are slipping underwater in terms of ROI vs. Power within the few difficulty updates.  Well, maybe someone will breathe life into them with an LTC implementation. Who knows.

Genuine thanks though for the effort.  I've been a critic, but you're true to your word re: active support on your terms and I respect that.  I guess all along my beef was with Enterpoint not supporting cgminer rather than vice versa.

CM3 being Avalon based, right?  Or was that the super FPGA hybrid?

Is there even any interest in Avalon based options any longer?  Surely it's no longer viable.

+1
If the deal was exclusive, burnin has handed a monopoly to Cryptx and asic-hardware.com.  Cryptx already has his orderbooks from the bitburner - with the correct pricing this would have been a win-win-win for manufacturer-distributor-customer.

I hope this wasn't an exclusive deal and burnin may consider allowing the free market to dictate distributor pricing by stating minimum orders and terms of business for new distributorships.  Group buy anyone?  TBH unless anyone has volumes of Bitfury chips about to be shipped, it's almost academic and the monopoly will both prevail and likely fail (if that's even possible!), dragging burnin's reputation down with it.

Burnin, just a thought but isn't the answer here to let free market competition police the pricing?

Have you agreed exclusivity to CryptX or are you open to other distributors provided they can meet minimum volumes?

And in case you were wondering:

Refund Process
https://bitcointalk.org/index.php?topic=177827.msg3038356#msg3038356

Email only, follow link for details but very straightforward.

Format is:
username;chips;BTC;OriginalBitcoinAddress

Send email to the special address in the post linked above and use the address you registered on the chip distribution site for sending, otherwise you'll need to sign the refund request.  Don't forget the minus signs on the Chips & BTC fields!

@zefir - you're a star!  Your professionalism and diplomacy have paid dividends.

Just a question of when Bitsyncom will follow through.

How do you propose to move forward for those that request refunds?

You misunderstand.  The information you've been given here tells you to use solid copper wires Awg 12 or 14 to bridge the board terminals and not to exceed 20 amps between the connectors on the boards (240W).

If you stick to this, nothing you do with the PSU cabling can exceed these limits and damage the boards directly.  Of course, with such high loads if you aren't safe and wise its entirely possible to melt upstream connectors and cause a fire risk, or otherwise overload your PSU rails depending on its design.

@Burnin: If the tracks between connectors are rated 20amp does this mean the board can take its own requirements, say 8 amps plus passthrough a further 16 amps between the connectors, subject to not overloading the PCIe connector itself.

^^ that definitely helps, and if you're using the up/down cables with boards you might need more than one restart as the boards seem even more finicky when they're running master/slave.

Just a thought from a different angle - any telltale visual indicators from the boards?  What are the leds doing (predominately)?

Are you seeing any yellow leds when in routine running?  That might give a clue if the cause of your low hash rate is that the boards are starved of work and going idle.

It seems there are and there aren't problems with Raspbian depending on what you're using.  I run stock Raspbian with a locally compiled latest version of BFGminer for my CM1s and it runs for weeks uninterrupted, and except maybe 1 time the interruption is me restarting it to test or tweak something.  However, importantly this doesn't use libusb.

So, given that extended support for BitBurner voltage control is likely to be built into cgminer on kano's advice & experience I'm definitely going to look at a Arch linux / libusb/ cgminer build as an alternate.  Arch linux gets a bad rep amongst Pi'ers as being less user friendly - but it's just linux.  Don't fear it!

From what I've read about MinePeon - although it's got a lot of clever things added into the distro, I'd rather a clean stable stock distro with ssh, screen, and a quick init script to wake up my boards and launch my miner of choice.  Rock solid.

Harsh. I do understand, but I just didn't like the attitude when initially submitting an innocent bug report / feature request.  No doubt kano is a talented dev that's doing a great job for the community along with ckolivas, but he's spiky.  There are other ways to get your point across without alienating people.

I'm nobody in the bitcoin world, but I still appreciate human decency and politeness.  Old fashioned, I know.

Yes, we're veering off topic.  It can be done, very cheaply even in the UK.
Citibank UK EURO Current Account (Monthly fee about £8 or free if you push £1800 per month through it)
Transferwise (referral link) http://transferwise.com/u/6de1 to convert GBP into EUR (pretty much at the wholesale spot rate plus a couple of quid)
SEPA transfer from Citi EURO account to wherever (e.g. Bitstamp/Burnin) - FREE.

The downside is it takes about 5 days to get GBP into BTC, especially if I've not got a float in the EUR account.

Other UK alternative is Bitbargain https://bitbargain.co.uk/tutorial?r=tigerbit
Sometimes there are sellers that are selling close to MtGox bid price, but volumes are lower obviously.  More expensive, but safe and FAST - UK faster payments or Barclays PingIT mean transactions often take just a matter of minutes.

Thanks for the clear tutorial for RPi - would have saved me a lot of time if I knew about it before!  I will check out Arch but I've actually been using stock Raspian with my CM1s and have no problems at all.

Unfortunately though due to this "unless you give us free hardware" policy I can no longer use cgminer with my CM1s so have had to switch camps to the BFGminer which remains open and cooperative with any hardware manufacturer.  I understand that you want to test hardware directly but many people have offered to debug, provide you whatever info you need, and even provide remote access to systems with miners - yet it seems you actually just want free hardware  If that's your commercial model, then I get it - just wish I knew upfront before buying into cgminer.

CGMiner used to work like a dream, then they rewrote the USB stack and broke it (but is much more efficient for those it works for) - and now won't fix it because nobody gave kano a free CM1.  Cautionary tale  - other miners are available  ;-)

Nothing specific, no.  I think Jonny couldn't test it as they didn't ship a US compatible version but it was described as being implemented as two 750W units back to back each with two 12V rails.  Multiple rails really isn't a bad thing if you load them correctly.  If I wanted that much power I'd look at actual twin PSUs which would give me some real redundancy.  You could probably pick up two top brand proven design PSUs Gold or Platinum rated around the 700-800W mark for around the same outlay.  The Thermaltake is quite a bit larger than standard PSU size, so you wouldn't lose as much space as you think.

It's your call!

Check out your desired PSU (or whatever is available locally) here: http://www.jonnyguru.com/
This guy runs detailed load and regulation tests.  The tests you're interested in are the Crossload tests (particularly CL2 the 12V one) where he creates a maximal load on 12V or 5V and checks voltage regulation and ripple.  As has been pointed out, most top end high power PSUs don't actually require small loads, although the ATX specification says there should be one.

If you want to go cheap homebrew then you can always build this for <5 EUR.

Generates the min loads using power resistors on 3.3V & 5V to keeps a small stack of FPGAs running on a cheap 20EUR 460W PSU.  Mk II should see me running the Raspberry Pi and USB HUB off the 5V line so I can remove the 22Ohm resistor on the 5V rail that does get a bit warm.  Of course, my bitburners will be running off something like an Antec HCP 1200 that doesn't require the loads anyway - but it's two less plugs in the wall if I have the Pi and USB hub powered from the standby 5V, and I can even have an on off switch for the main load.

Biggest PSU isn't necessarily the best.  Most expensive, maybe.  Buy what you need - don't build in too much overhead on wattage.  You're better off spending the money on a decent branded PSU.  Personally I plan to load the 1200W Antec HCP or Corsair around 90-94% of max-rated 12V load.  Check out the tests at jonnyguru and it'll show you how these PSUs perform at varying loads.  Most often for a decent branded supply the efficiency at full load is pretty much within 1-2% of optimal - its when the PSU operates at lower loads the efficiency falls off a cliff.  btw - my logic is based on running 12 XX & 1 X with as much overclock as I can reasonably handle on air (planned for 90W per board).

PM sent with bank details from the order confirmation.

Yeah but if you do it the other way around, and make the shop and checkout cart part of the "members" section.  Then that would almost certainly stop the shared cart problem.

^ THAT!

Bring the site back up, let us register but not checkout.  Then go for Take 2!