How about my outdated Nehalem?

I think Chemisist was checking the solved block rate on testnet over a 10-minute period. Have those results from the overthreading been tallied?

Mind linking to your github? The speed this thread is updating is a bit overwhelming. Thanks in advance.

Any chance for a nehalem-based i7?

Seems perfectly reasonable to me. We would all be dead in the water without him. I hope people tip the everliving fuck out of him when this all comes together (or at the very least that he makes a pretty mint from royalties / licensing).

I'm looking to buy 14 chips (had 2 left over and it seems difficult to find someone building K1s).

Assuming I can get the 14 chips, I'm interested in one more k16.

I need 14.

I'm interested in buying any chips that people were allocating to k1's. I need 14 to make a full k16. Anyone interested?

Maybe I'm alone here but isn't the base clock speed the base clock speed because anything over that would / could result in failure or HW errors? I'm not sure I'd want to chance overclocking if it was going to mean potential quick burnout of the chips.

I feel the exact same way.

Just for clarification on this, this will essentially yield a working hashing board complete with components and heatsink, correct? The only thing it won't have is a case but pci-e power connector, usb, and all requisite components will be on the boards, right? Just plug in the power supply, connect to computer, install any requisite drivers, start cgminer, and the hashing commences. Correct? I just want to make sure that if there's anything I need to get taken care of prior to receipt that I do it now rather than waiting until I get the boards.

Thanks for the update, man. I'm stoked about this.

I also sent you a PM a while back. I realize you're probably pretty inundated with messages but if you have a chance and could take a look, I'd appreciate it.

Every time I hear "friggin'" and "canadians" in the same breath I can't help but think of Ricky (from Trailer Park Boys) ... but I digress.

Thanks for your hard work and excellent communication, BKK.

Oh for sure, they do these kinds of things and they can be done but they are in situations where they're basically using commodity hardware (for them) and have environments where the failure of a machine, rack, row, or even in extreme cases entire data centers doesn't translate to lost service to customers. They can afford to be pioneers and push the envelopes. Most of us simply don't have this type of ability in our houses. They save money on power / cooling equipment and just accept a potentially higher MTBF of server equipment. I worked at a "big company's" data center in Seattle for a while where they had a tent outside that was basically protecting servers from the rain. Intel did similar things. These types of endeavors are what have helped open up the TC 9.9 operating window. It used to be a max of 68F back in 2008 (iirc) but it has since been raised to 80.6F for the cold aisle (inlet) and even in some classes of machines as high as 104F.

While this seems good in principle, there are some things to keep in mind when using outside air for cooling.

1) Just exhausting air to the outside and using the room as the supply means that the negative pressure you're creating draws the air from somewhere else in the house / building. Exhausting the air out your window means the air to make up for what you're exhausting is going to be coming into the house from somewhere else. You may not feel it but it's happening.
2) Using an inlet and an outlet will remove this but then you have to worry about air quality, humidity, and even potentially rain. If you have a long enough duct or have one of those dryer vent covers, you'll avoid rain but humidity (specifically condensation) is a more difficult challenge. The last thing you want to have happen is for the temperature to fall below dewpoint and you start getting condensation. Probably not going to be a huge issue since the temperature change across the device is going to be positive therefore producing exhaust air that is capable of holding more moisture than the intake air; but if it's enclosed and you're taking in cold air in the winter, it could potentially cause condensation on the exterior that could mess some things up. Additionally there's debris to worry about like dust, pollen, or whatever else. This can accumulate in the heat sinks or other airflow areas and either block airflow, foul heat transfer surfaces (meaning the internal temperature rises), or even accumulate and pose a fire risk.
3) In addition to humidity, electronics may experience damage or small cracks due to excessive rate of change of temperature (called heatup and cooldown rates). ASHRAE TC 9.9 (This is the 2011 version which was recently superseded by the 2012 version, though it's not publicly available from what I could find) is the industry standard for this type of thing. This is all to prolong life and prevent damage or danger to the environment. The point here is that if you have this running in the winter (presumably powered by an external fan) and the hash rate goes down (pool goes down, lose connection to internet, or any number of other reasons), if you continue to pump cold air through there, that could stress sensitive components and ultimately lead to premature failure.

There are some other considerations but these are the top things to keep in mind. It's not as simple as just rejecting heat to the outside. It can be done but if it was simply that easy, every data center would be doing it.

That's great and all but I don't know that your group buy thread is the right place to advocate a new venture.

I would imagine that they would probably deal directly with each other. I think John K acted as escrow for both ryepdx as well as Ragnazn (organizer of my group buy) so it should be relatively easy for them to coordinate. I just filled out the shipping info form for my group buy and indicated that I was having them sent to Stumptown. I don't know how everyone else feels but my preference would be to just bundle all the Stumptown-bound chips together in one shipment, overnight to Oregon, and share the cost between those involved (proportional to each person's share of the chips). Alternatively, ryepdx would cover shipping for that one shipment and each of us users would pay him our share (this way one person isn't delaying the shipment to Stumptown).

It seems you're missing substrate.

Depending on the data center, you'll find most rack densities in the 3-7kW per rack range. At 42u, that's 71-167w per U on average. You can get more dense if you want, but you're going to pay for the power / cooling that you use and it won't do you any good to make it more dense. Ultimately, the colo provider had to build their data center with a design power in mind and if you chew up power before the usable space, they can't sell just bare white space without the power / cooling capacity to support it. You really can't look at it in terms of u-space or even physical (white) space alone. Stick to the kW / rack or even watt-per-U. 100w per U is a pretty good number since it would give you 4.2kW / rack. if it was fully populated. Go higher and you're probably going to be using blanking plates.

Source: I'm an 18-year "critical power industry" veteran.