julz if possible could yourself or Leo keep us updated in this thread in regards to stock, I'm pretty sure 5 USB's will sell out in no time. I am possibly going to place an order soon for a few more than that so please advise if you get more in stock. I don't have the funds right at this time so I can't place an order immediately 

The best settings are the default settings. Some very smart people with large resources have gone to great effort to determine those best values. Unless you really know what you are doing then don't change them.

I suspect you think that your chainsperday is low because you over-estimate your Xeons performance. Also, saying you have a 2.66 GHz Xeon is like saying you have a 2.66 meter long car. It doesn't actually mean very much because there are half a dozen Xeons that fit that description. Single core? Dual core? Quad core? How about a model number (eg SL___) or series type (eg Xeon E5####).

If I had to guess, your CPU's are probably the Core-equivalent Xeon's: http://en.wikipedia.org/wiki/List_of_Intel_Xeon_microprocessors#Core-based_Xeons which were released ~2006-2008 and the performance you are getting is completely reasonable from such CPU. In fact, the poorer quad-core Xeons will also give about that performance too.

It's important to note that searching for short addresses (<34 standard character address length) by utilising "1"*n patterns has a greater difficulty than other patterns of the same length.

I have found several hundred 31 length addresses and a few (2 or 3) 30 character addresses running my 7950 at work over a many-month long period of time.

HP10 64 bit

My main rig (1.7 chainsperday) no blocks since 26-Aug

Another machine (1.1 chainsperday) no blocks since 10-Aug

I'm finding the variance quite unusual lately. Perhaps I need to sacrifice a goat to the Prime Gods.

I reckon its a trap. It'll cost thousands to buy and then thousands more to either install power infrastructure or find a datacenter to host it (which can be both difficult to arrange and expensive). This doesn't even consider the efficiency of the CPU nor that SHA-256 and scrypt are two hardware generations ahead already. This will be my last post advising you of how terrible this idea is. Best of luck.

I would take the overall average not the 5 second average value.

Can confirm A+ interface, would destroy eyesight again.

A more realistic situation is someone renting a server with Phi(s) installed. They'd still need to do a lot of coding. For all we know there may already be people doing this: not everyone has the incentive to disclose their works on public forums, especially if they can make a lot of money.

Although the Phi is an exceptional little package, there are many other co-processors on the market. In theory these too could be used for mining but again would require a good programming knowledge and understanding of the maths behind primecoin.

Face palm.

Seems legit.

Quite a statement. 

I highly doubt the entire system would make more MH/s or KH/s (depending on algo in use) than a single Radeon 7950. You would be mining on a lot of highly inefficient (by todays standard) CPUs. It would be no better or worse than running out and buying a huge pallet of Pentium 3 and 4 based desktop PCs: completely useless when GPU/ASIC are available for scrypt mining and very poorly performing for CPU coins compared to today's i7/i5/xeon and AMD equivalents. Even mining XPM / YAC / other CPU coins you would most likely not break-even unless you had free power. Even then it would take a very long time to make back your $2000 investment + infrastructure installation costs. It might sound appealing to  run your own quasi-supercomputer however these systems are just too dated now to compete. If you somehow got your hands on a sparkling new new set of super computer server racks from 2012-2013 then you might be able to reach break even with a CPU coin like XPM (if the market were to improve, too).

Don't change the parameters unless you have a computer science or mathematics degree 

Yeah it has been struggling to approach 10.00 for days, I think it will take maybe a week or more to reach it even if it raised continuously from now on.

As was explained in a recent blog piece, diff adjusts relatively slowly so it'll take days or weeks to see the effects of GPU mining.

I note that the main thread(s) discussing the GPU miner have degenerated in a shit storm, because apparently the GPU miner doesn't perform to the arbitrary expectations of the donors. I say tuff titties. I recall calling that, weeks ago. The creator even freely admitted that the performance would be hard to determine (this was before most people had donated).

I will be continuing to mine on CPU for now. If/when the GPU miner is released openly then I'll probably run it on a few systems. But I continue to look forward to mikaelh's releases.

I hope there are some fans around there which were removed just for the photo's. For the lazy, it's ~275 watts.

Not likely at current exchange rates and difficulty..

That's a good guide, my only suggestion might be that it would a little clearer if the images were taken with a USB microscope, they are about $15-20 from eBay /dhgate. If you do a lot of work on small boards / with SMDs I'd recommend them for sure. But a seriously nice guide in any case. 

Aside from BFL hardware and custom luxury boats, I can't think of a single thing that you pay for and then receive almost a year later. Help me out here?

That's kind of the cameras fault. Its actually a very yellow/orange color. It's a generic cheap knock-off lubricating oil for vacuum pumps, not sure what it is derived from. I have a feeling its a silicone oil. The BE survived overnight so I'm happy.