Bitcoin Forum
July 04, 2024, 03:06:17 PM *
News: Latest Bitcoin Core release: 27.0 [Torrent]
 
  Home Help Search Login Register More  
  Show Posts
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 [41] 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 ... 345 »
801  Alternate cryptocurrencies / Mining (Altcoins) / Re: Comprehensive ASIC Miner Comparison Table on: January 13, 2018, 09:38:52 PM
DragonMint has ANNOUNCED a miner, there is considerable doubt at this point if it actually exists.

Let's wait for WORKING HARDWARE to show up and be widely reported as REAL before we add stuff to a list like this?
802  Alternate cryptocurrencies / Mining (Altcoins) / Re: Very first tests with P104-100: Nice GPU! on: January 13, 2018, 09:22:00 PM
Hi guys,

I'm very busy this time. So sorry for late update.

I have just made a quick test for Equihash algorithm, at the basic OC I didnt push it much, it could achieve 470sol/s for ZEC.
Memory is GGDR5X Micron, so basically for 37.7Mh/s for ETH, that's really impressive!
Please take a look on setting and P104-100 GPU info below. It's nice GPU I think.

For quick reference: https://imgur.com/a/ga8Zq





 That's not impressive at all, 1070 ti manages that hashrate at under 110 watts with a TON better efficiency.
 On the other hand, it might do better with optimization.
803  Alternate cryptocurrencies / Mining (Altcoins) / Re: [Cast XMR] high speed XMR/CryptoNight miner for RX Vega GPUs (2 KHash/s) on: January 13, 2018, 09:16:13 PM
Vega could have 2Kh for XMR, that's really good speed, what about other coin like BTX, DeepOnion X13, and ETH

 45-46 Mhash/sec on ETH per reports I've seen for one of the Vega models (64 I think).

 Wasn't all that impressive even when you could GET a Vega at near MSRP - a pair of RX 470/480/570/580 at the time was about the same price but could mine 55-60 ballpark for the pair.

 No clue on those other - and isn't X13 mineable by some or all of the Baikal ASIC models?



804  Alternate cryptocurrencies / Mining (Altcoins) / Re: Best GPU's to mine ZCASH with? on: January 13, 2018, 09:12:11 PM
What gpu is the best now? is it stikl the 1070 8gb? I want to build a 13gpu rig only for zcash to build an forgott, because I really like the coin.

 "Best" is subjective, and depends on algorithm and how you intend to mine.

 1070 ti is the current "best" for EFFICIENT mining on equihash, but there are other options that might be better if you are more worried about rig density, or high hashrate and don't CARE about efficiency, or most hashrate per dollar spent, or are mining other algorithms like ethash or cryptoknight.

 Right now though, "best" seems to be "what I can get of AT ALL" given the current extreme shortage on ALL mid-to-upper range GPUs.

805  Alternate cryptocurrencies / Mining (Altcoins) / Re: Calculating air conditioning on GPU mining rigs, help needed. on: January 13, 2018, 09:08:25 PM
I have run a 400 GPU farm with absolutely no A/C. If you need help, please contact me on skype (Kotarius). I can save you a lot of money.

I'm quite curious how this is done and what climate you're in that no AC is used.  I live in the Midwest, United States and in the summer, the ambient temp will far exceed what you want a room full of computers to be at.


 A properly designed mining rig can be quite comfortable at 90 F ambient, and most should be able to handle 100 if enough space is allowed between the GPUs for proper cooling.

 ASIC rigs vary - some handle higher temps well, some need to be downclocked.

 Even the big boys have started realizing this - reference the Yahoo "Chicken coop" data center design for a well-known example of a MODERN efficient data center that does not use traditional A/C at all.

806  Alternate cryptocurrencies / Mining (Altcoins) / Re: ASUS B250 MINING EXPERT bios 403 (2017/12/15) released? on: January 13, 2018, 09:02:15 PM
I think it never will be support 19 normal gpus.
Amd have never said that.
You have to combine it with p106 or p104 which normal people cant buy.

 Normal people CAN buy the P106 - they have been listed on NewEgg and Amazon - they're just in very short supply due to high demand and LOW production.

 P104 as far as I know is only just hitting production, and is not widely available yet - it remains to be seen what the production levels of THAT GPU get to.

807  Bitcoin / Mining support / Re: Power cord become so hot on: January 13, 2018, 08:59:23 PM
QuintLeo, thank you.  I edited it so there is not bad information posted.
The funny thing is I have a 16AWG PSU cable here with a 13A paper tag on it!  It is some nameless brand so it has to be mislabeled.  I double checked and you are right about the ratings.
Again, thank you.

 Some cheap manufacturers don't like living within the NEC, especially those from areas that are not covered by the NEC like China.
 It might be labeled "correctly" for the area it's FROM (except that they don't USE the same type of power connectors outside of the USA except possibly in Canada and Japan).


808  Bitcoin / Mining support / Re: Split AC Unit for Cooling Mining Farm? on: January 13, 2018, 08:56:44 PM
It depends on what kind of data center you're running. My typical OCP cabinets are running 20kW, I have routers running 30kW. My cabinets are only 2' wide so I'd bet the power density is 2-3X.

I just designed one room to run 9.6MW IT load, nominal, up to 32kW per 2' cabinet. These little S9s at 1.3kW aren't so bad.

I'd say that every mining farm I've seen so far is completely missing the idea.

Looking at your pictures I'd suggest you simply isolate the exhaust of all the miners from the intake. I mean a physical barrier which prohibits the hot air from mixing with the cool air. I'd just build a box that contains all the hot air which will go out that convenient window. Place your shelves against the outside off the box, set the miner on the shelf so that the exhaust fan touches the wood or better yet sheet rock, use a pencil to outline the location of the exhaust fan, cut a hole to stick the fan through the hole and turn it on. Then do the rest of them. Hot air isolation and containment is the key.

If you really want to, measure the differential pressure between the box and outside. If it exceeds 0.5 psi, mount a squirrel cage blower with 20% more capacity than the miners total the suck the air through the miners and force it outside. If you put a VFD on that blower, you can actually set it to about -0.1. This is critical to improve the effectiveness of the radial fans on the miners. They'll last much longer that way. Don't worry about the fan energy. I've run this test a couple times and found the fan energy used by the exhaust fan is negated by the fan energy reduction in all the miners. Then, the miner chips do run cooler so they burn less energy. It'll actually improve your site efficiency.

Sheet rock is better than wood as it's really hard to burn. Your noise level will go way down too. You could even add a layer of insulation but I don't think you'll need it.

Too many mining farms try to throw the air around the room. Too many data centers do too. My data centers all have air to Freon heat exchangers on the back doors of each cabinet.

Think about how the shed solution isolates the hot and cool air. This is doing the same thing.


 OCP cabinets tend to have a lot higher power density that most common 19" rackmount based data centers allow.
 Most data centers do NOT allow 20KW per cabinet - most I've worked with you're lucky if you have 10 kw available.
 Your 32 kw per cabinet data center is the EXCEPTION, not the norm (though not uncommon in OCP usage).

 I've not actually bought any OCP gear, but I keep being tempted by some surplus Quanta Windmill and Winterfell servers/racks, so I have SOME knowleage of the subject and the relatively high power/performance density of OCP vs most "standard" rack-mount servers.

 Sheet rock / drywall is generaly fire rated, not just "hard to burn" - how many hours of fire rating tends to vary with the thickness but I've seen 6 hour ratings on some THICK sheets of the stuff.
 Insulation would probably be a waste, given the airflow level and that drywall itself insulates some.

 New data centers are moving away from the entire "A/C to cool with" concept due to the costs - the Yahoo "Chicken Coop" design is a lot closer to what most large data centers are doing today, as it's a TON more efficient than traditional designs.
 Or look at the GigaWatt "shed" design, which seems to be a lower-tech variant intended to be able to deal with stuff OTHER THAN rack-mounted gear (and seems to be similar to what Bitmain uses in it's big farm).


 
809  Alternate cryptocurrencies / Mining (Altcoins) / Re: SGMiner on XBOX One on: January 13, 2018, 08:42:00 PM
This isn't Usenet, nor BBS (I'm older than you), it's a modern forum that supports bbcode/bold. Learn to use it.

Hovis method has never been used before in a mass-produced product. Stop lying. Thank you for proving your ignorance, though.

PS4 has not been hacked yet, otherwise piracy would be rampant already.

Console APUs support hUMA (you didn't even bother to google it), so there are no memory addressing restrictions.

Now move along, because this subject (console mining) isn't for you. You're not even a console owner to begin with, otherwise you wouldn't be so ignorant in the first place. Do your homework and then we can talk.

I doubt you are older than I am.
Hint - I'm pretty close to Philma1957's age (1957 is his birthyear).
I was also a FidoNet sysop for about a decade, and a stand-alone BBS sysop for years before that.
Ever work on a Bendix G15? I have - though it was rather outdated by the time I got to work on it.

If you can put LINUX on a PS4 (available since at least 2016 as WIDELY REPORTED and go look at that link I posted for ONE SOURCE), then it is hackable and in fact HAS been hacked.

Hovis method HAS in fact been used in mass-produced products - just not with as high of a volume as the APU in the XBox One X.
Marketing shills CAN AND DO LIE to make their product seem "more special", and this is such a case.


There is no "third option" at this time AFAIK using the XBox One or XBox One X, as there is no mining app written for it nor can you run a different OS that DOES support mining software.
There IS a "third option" with the PS4, but the iGPU in the APU version in those is a lot lower performance even in THEORY vs the one in the XBox One X.
810  Bitcoin / Mining speculation / Re: What would be the perfect ASIC Bitcoin miner? on: January 13, 2018, 08:25:36 PM
The last Bitfury box I remember seeing was 6U and I "believe" had 4 power supplies in a "3+1 redundant" sort of setup, but it's been a while and I might be misremembering on the power supplies.

The Spondoolies SP50 had something like 11 power supplies in either a "n+1" or "n+2" configuration, totalling 15-20 KW of active power supplies - but that was in a custom 11U case.

3u is kind of an odd size for rack mount gear - I've seen some around, and the cases are fairly common for servers, they're even tall enough I *think* to mount standard-size GPUs, but they tend to not come out "even" in the fairly common "44u" racks a lot of data centers use though they'd be fine in 48u (less common) or 42u (common) racks.


811  Alternate cryptocurrencies / Mining (Altcoins) / Re: Very first tests P104-100: 39 Mh/s ETH; 470 sol/s ZEC - Nice GPU! on: January 12, 2018, 11:23:17 PM

Tho the 1070ti does only 33mh/s max on ETH, but who wants eth on Nvidia anyways?


 Titan V, 1060, and possibly 1050/1050 ti owners.

812  Alternate cryptocurrencies / Mining (Altcoins) / Re: Comprehensive ASIC Miner Comparison Table on: January 12, 2018, 11:21:53 PM
As a specific recent example, many of the early S9 batches had slightly different configurations in the software that resulted in different hashrates and different power draws, due to variations in the chips themselves.
The more recent versions have different software that does some "auto-adapt" to try to maximise the hashrate, but results in even wider variation WITHIN the batch on hashrate and power draw.

 Some older miners (especially the Spondoolies models) were configurable, able to tailor power draw and resulting hashrate quite a bit.


 Hash/$ is going to be a moving target, as miner pricing shifts in response to market changes.

813  Alternate cryptocurrencies / Mining (Altcoins) / Re: Windows 10 on: January 12, 2018, 11:14:38 PM

The usb boots on my other PC but not on my mining one

 Try a different USB port.
 Might also be that your mining machine isn't set to boot from a USB - check your bios settings under wherever it puts the "boot drives" part.

814  Alternate cryptocurrencies / Mining (Altcoins) / Re: GTX 960, any hope for profit at all? on: January 12, 2018, 11:12:21 PM
My pair of GTX 960s are currently pointed at Nicehash (they're in my "backup" gaming machine so Win7 not LINUX).
Machine also has a GTX 950 also mining to Nicehash.
Current earnings are a little over $6/day for all 3 cards combined.

Machine as a whole has been a consistant $3/day or more earner for pretty much all of the last year, without using the A10 APU for mining at all.

815  Alternate cryptocurrencies / Mining (Altcoins) / Re: Waiting forever on Amazon stock of 1070ti. Awful! on: January 12, 2018, 11:04:19 PM
Newegg, BHphoto, microcenter all have them.

None of these places have any in stock unless you are talking about the resellers asking for 1k and up.  There are zero in stock across all the major distributors. Dont just tout random places. There is shortage and I wouldnt expect any to be available for a few weeks, and if they do they will sell out in under a hour like the last batch 3 days ago on Newegg.

Im not "touting" random places. I literally just bought from all three.

 Newegg has been completely out of 1070 ti cards other than "massive markup reseller stock" far more of the time than not since the holidays.

 SOMETIMES you can sneak an order in right after they get a restock on a specific card though - like the MSI I just received yesterday.

 I've had more than a few notifications that by the time I saw the notification the card had already sold out again the last couple weeks.
 I've pretty much given up on asking for notifications at this point.


816  Alternate cryptocurrencies / Mining (Altcoins) / Re: Pcie riser on: January 12, 2018, 10:58:50 PM
Yes, it works - and it should work with PCI-E 1.0 slots as well, but I'm not sure if I have anything quite THAT old still around.

817  Bitcoin / Mining support / Re: Power cord become so hot on: January 12, 2018, 10:52:48 PM
16 AWG is actually rated for 10 amps, not 13 - and AWG 18 is rated for 7 amps IIRC.
It is RARE to see "amperage" rating on a power cord, usually if there is such a rating it's on one of those "wrap-around label" things that tend to get torn up or removed over time.


 If the power cords are all the same and the one on a specific power supply is getting hot when the others are not, check to make sure you don't have hot air blowing ON that cord - otherwise you probably have a faulty power supply.

818  Bitcoin / Mining support / Re: Getting Avalon 821 which needs 220/240v. I am looking at a device to step my 120 on: January 12, 2018, 10:47:34 PM
Standard residential electric service in the USA is fed at 234 volts in a "split phase" format - better known as "center-tapped" outside the electric industry.

Most appliances run on 117 VAC because it provides plenty of power for them, but some higher-load appliances like electric ranges, higher-end electric water heaters, some high-end window and probably ALL central air conditioner units, electric driers, some high-wattage wall heaters, run from 234 volts because they need a lot more power than it is practical to serve from a 117 VAC circuit.

In some cases, these appliances also need a 117 VAC feed to power stuff like clocks, timers, and control circuits in general so they need the full 234 VAC feed WITH the center tap (neutral) so they can feed the low-wattage stuff from 117 VAC.

In part, this resulted from "legacy" stuff, where 117 VAC in the US became the "norm" but eventually higher-power electric stuff needed more voltage and power usage for most homes and many small business opreations climbed to the point that 234 VAC was just a lot more practical as a feed - but set up with the center-tap "neutral" stuff to allow older and low-power appliances to continue to use the lower voltage.



 When the power company upgraded your service to 200 amps from 100 amps, they almost definitely upgraded the feed wiring from the pole/transformer to your main panel as part of the upgrade.
 Meter probably did not need to be upgraded, those things tend to have a pretty high max capacity - though they might have replaced it with something newer or had to upgrade the meter MOUNT for higher capacity.

 What the heck kind of BBS did you run that needed a "bunch of computers"?
 TBBS only needed one machine to run up to 64 lines (96 if you could get the customized version Jim Maxey used for Event Horizons).

819  Bitcoin / Mining support / Re: Split AC Unit for Cooling Mining Farm? on: January 12, 2018, 10:36:10 PM

Little 400 CFU fan in right now as a temporary solution - I live in VA so it has been cold lately and this is better than nothing.

I have an old dryer vent I plan on ducting the 400 CFU fan into to - I am thinking have 6 or 12 of the ASICs blow into a cornered off part of the room and have that 400 CFU take it all out.. not sure if it will be enough though? Probably not

 You're not even in the ballpark.
 You need to start thinking in terms of more like 5000-10000 CFM as a minimum.

 A 6" dryer vent might handle *3* ASIC units, if you have a heavy duty "booster" type fan on it or *2* miners if you Y-duct the output of those miners directly into it - no way is it even going to be CLOSE to handling 12.
 Most dryer vents are more like 4" though - which is enough for ONE miner, but no more, and even with a high-end BOOSTER fan won't handle more than perhaps 2 miners.




820  Bitcoin / Mining support / Re: Split AC Unit for Cooling Mining Farm? on: January 12, 2018, 10:31:47 PM
40 miners = 54kW

That would be a disaster.


 54 KW is about 160,000 BTU - that wouldn't be a disaster, that would be a "miners in constant overheat shutdown" if you didn't end up with a fire.
 MASSIVE AIRFLOW (and possibly some Evap cooling input to the "cold side" of the room as PART OF that massive airflow) is the only viable answer.

 HVAC folks generally have NO CLUE about the heat load miners generate.
 Even DATA CENTER folks have NO CLUE about the heat density of miners, as a general rule.





Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 [41] 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 ... 345 »
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!