Even the current AMD APUs can't access enough GPU ram to mine Ethereum with (I see 2GB as an OPTION on a couple of my motherboards with the 7860K, but the system crashes when I TRY to use that setting).

 Even if they could do so, they'd likely only be good for 2-3 MH I'd guess due to their VERY SLOW memory access compared to even 3-4 generation old GPU cards.

I prefer to put the dust filters on the fans I feed air into my mining area with - a 20x20 furnace-type filter makes a VERY good match with common box-type fans.

It varies pretty often - Batches 7 and 9 only things available as of a few seconds ago.

 Last 3?
 Most S5's mined at or better than at advertised hashrate.
 Ditto the S5+ as I recall.
 S7.... well, iffy on the early batches.

 Last *2* have been an issue....

Haven't been there in a very long time - but have quite a bit of family in the area and was born there.

Should be some way to do that using the standard cron in pretty much every LINUX distribution.

I didn't have any Bitcoin hashrate left to turn off, so zero.

 9-)

20 amp NEMA 5 sockets are NOT standard in U.S. homes and most businesses, though they're more frequently found in shop/industrial type business locations.

 You will find exceptions SOMETIMES in newer homes or homes that have upgraded wiring, used mostly for medium-sized window A/C units and washers, or sometimes in garages/shop areas.

 You'll also find occasional NEMA 6 220v series sockets, usually intended for use with electric driers, electric hot water heaters, or large (most 25,000 BTU and up) window A/C units.

The STANDARD is a NEMA 5-15 dual socket for almost ALL outlets in the large marjority of US homes.



 Most of the power connectors I've seen in the pair of hospitals I've been in this year were GFI NEMA 5-20.

 This is not a "hospital grade" connector as such, GFI is specified for any location that wetness or other higher risk of shock hazards can be found, though that "higher risk" issue is why pretty much all line-powered medical equipment specifies connection to a GCI-equipped circuit and therefore that type of outlet is the norm in most areas of a hospital.



 

 The BREAKER might be rated at 20 amps,  but most common house 110V SOCKETS are rated at 15 amps (and I believe that applies to BOTH sockets combined on a typical dual-socket outlet).

 Keep in mind that a breaker can have MANY outlets on it.


 Also, breakers derate with heat - if you don't run AC in the room your breaker box is in, it's not uncommon for the breakers to start tripping at a fair bit lower than their RATED capasity - especially if you have any of the "2 circuits on one breaker" type breakers, those things overheat if you look at them funny.

 Last place I was in was running a QO box - the 15 AMP rated 2-in-one-slot breakers on some of my mining circuits were typically tripping at 10 AMPS or so actual draw (appx. 1KW "at the wall" A2 Mega Terminators) if the outside ambient got over 90F (inside in that room ran 4-5 degrees hotter). This was on a breaker RATED for 104F (40C, which is the NORM for every breaker I've ever seen).

 I'm not sure if the actual outlet has to be derated for temperature.
 Wire does derate, but that's already taken into account in the NEMA code wire size guides on a quite conservative basis.

It varies with the specific local power company you are dealing with - but "industrial" is generally a VERY HIGH USAGE (hundreds of kilowatts or MEGAwatts of draw) plan anywhere I've seen.

Unless you have FREE power, those things are so inefficient by current standards that ANY price would be "wrong".

 I ran on Slush's pool for a while when I was bitcoin mining, didn't have any issues with it and they have a good reputation.

 And that's WHY you use powered risers.

 Yield and manufacturing variation on a very NEW manufacturing process node, I'd guess.
 Batch 1 seemed to have some MAJOR issues with not being able to meet it's specs on a lot of units - similar to the early S7 batches, then they redesigned the hashboards on the S7 to use a buck and fewer chips running at higher voltage, thus managing to meet the hashrate spec while eating noticeably more power....

Yeah, both side nice SOLID heatsinks would tend to help with making good reliable thermal contact long-term.

 Might be a little more expensive, but heatsinks don't cost all THAT much.



 That reminds me - why do you keep specifying you are locked into the "1 kilowatt power consumption" ballpark on the design?

 That's why I am moving (and others have already moved) to a land of VERY VERY low electric rates.

Sounds like a question to direct to MegaBigPower.

It's about running a 64 bit OS in many cases - Ethereum in particular REQUIRES a 64 bit OS to mine on.

 XP works for ASIC USB-based miners, but those aren't very efficient and the miner software tends to crash out a lot, IME.

 You CAN "mine" FoldCoin with XP - via running FAH.

Space heater might actually be one of the few VIABLE ideas - you need the heat anyway, so it's essentially a "free electric" situation for the mining part.

 The Bitfury and 21 visions of "a bitcoin miner in every appliance" are not viable, the overhead costs would quickly get too high and would make the resulting appliances non-competative VERY quickly.

 No, it just means don't try to compete with ASIC in mining with a GPU (which means forget any coin that uses the SHA256, Scrypt, or X11 algoruthms).

 The 480 looks like a VERY GOOD option for mining Ethereum with, among other usages.

 Trying to heatsink a chip THROUGH the board is just a nightmare of inefficiency. VERY VERY bad idea.

 On the other hand, trying to get multichips to make good contact with a single HS on top of them isn't fun either - but it's a TON more efficient when you can get it to work.