UPDATE: Finished bfgminer port for these....between this and fpga firmware update they run full speed on almost any scrypt pool! PM me for details I have been working on a big update to the Alcheminer / MAT excalibur over on litecointalk (I won't repost the whole thing here but you can read up here : https://litecointalk.org/index.php?topic=27370.0Long story short I found a huge flaw in the FPGA firmware that drives these machines, and updated the FPGA code as well as the python driver code to support the new logic. I have the machines running at full speed (around 250MH up from stock firmware/driver of around 210-220) at around 8W/MH. There are also a lot more driver updates including the ability to change clock rate and tweaks to the stratum proxy. Now that I have had a few users test out the firmware and upgrade process I'm posting it on here in case anyone with these machines has not seen the liitecointalk discussion and wants to get a bit more performance out of these. Shoot me a PM on here or litecointalk for more info! (same username). |
|
|
|
I hope sfards makes some new miners soon before the LTC hashrate goes into the shitter.
I hear that, need something cheaper to keep the hashrate up on these coins. Hashrate barely dropped 15% post halving, and its already stabilized...I was hoping for at least a 20-30% drop... |
|
|
|
Yeah that's it. I remember thinking that corrugated cardboard makes terrible heatsinks.
Lol please tell me thats a joke....Chips on their boards don't even have heatsinks...I don't know whats worse. |
|
|
|
I recently shipped my SFARDS to a fellow forum member who will be doing a full tear down and write up on it for the community. When he is done he will ship the miner back to me so stand by for more info on the ins and outs of the hardware and the software interface
I agree I think most units produced went for internal use or a private buyer they probably shipped a hand full to resellers just to prove the miner is real but at its efficiency they didn't do a public release since they are the highest in efficiency for both SHA256 and almost in scrpyt right now I think Titans still are higher
Nope they beat Titans for scrypt efficiency by a wide margin. Last I checked titans were around 5-6 W/MH, these do a little over 2 W/MH |
|
|
|
Anyone? I am at a loss here.
Just make yourself one...all you need is 3 jumper wires. |
|
|
|
|
Yea with 200 BTC and $3 LTC (equivalent of $1.5 after that halving tomorrow, which is the same it was pre pump) things are not looking too good for any sort of mining in general.
|
|
|
|
Will wait for the price to adjust to market. One way or the other prices will be coming down
Yep...you have to remember gridseed blades (SFARDS is rebranded Gridseed) sold them for like 3k initially, prices then plummeted to under 1k each few months later. The less people pay for these overpriced miners the faster the price will drop. |
|
|
|
|
BITMAIN please offer the option to split this into 1/3 miner with these specs: 2.6TH@1150 watts for about 800 USD.
Is very easily doable with the design of this since its essentially 3 miners stuck together.
|
|
|
|
|
Looking at the pics/specs its obvious they can make an S5 sized unit with this hardware. The specs for that would be 2.6TH@1150 watts for about 800 USD.
I hope they go this route as that would be a way more manageable home miner.
|
|
|
|
I guess quite a few of us have spent a lot of time testing and experimenting and then waiting for the Hash rate to stabilise to then log the GH/s?
It struck me while doing this that for a system that is working correctly surely there ought to be a direct relationship between Clock Frequency and GH/s?
So I looked back on the data sheets and measurements that I had made and came up with the following.
The S3+ (BM1382) seems very straightforward and if you multiply the Clock Frequency by 2 then you get the hash in GH/s. So the spec of 225MHz = 453GH/s. In my testing this was confirmed over a range of frequencies.
So when I started work with an S5 () I looked for something similar and it seemed to come to Clock Frequency x 3.3 = Hash in GH/s. So 355Mhz x 3.3 = 1150GH/s which is the spec of the S5, again this is borne out by the testing I have done over a range of frequencies & voltages.
In practice i have found the longer I wait for the Hash to stabilise the closer it get to the calculated value. So I wonder if we are we are wasting our time, for a system that is functioning correctly, waiting for Hash rates to stabilise as opposed to just doing some maths? Answers on a postcard to….
Rich
You are correct, the cores take a certain number of clock cycles to produce a single hash, so clock to hash rate can always be calculated from multiple factor of the clock frequency with a very high degree of accuracy. The only thing that affects this is as you go higher in frequency heat/logical core failures will increase and slightly drop the hash rate. |
|
|
|
|
I will also most likely be doing USA sales for these. Im located in NY so US shipments will be cheapest through me.
|
|
|
|
Wow, very efficient miner indeed  Can you prove your website is legitimate, your account is new. Read the thread in its entirity ... the man has been made to jump through a thousand hoops already! But 28 6pin PCI-E connectors for a single rig is mind boggling to say the least. Is the 6 pin PCI-E connector the highest rated power plug that exists? 8 pin is rated at 150W officially, but for our use won't double whatever number each of us is comfortable with on 6 pin as it only adds 2 more ground wires. not to mention no home outlet will support 3400 watts.. so it would have to be specially wired in its own sub panel. and this thing looks like a fire hazard..
No? You can power it from up to 9 PSUs if you want and split what circuits the PSUs are on as you like. so i just run extension cords to different outlets? lol If they were on different circuits, pretty much. I've got 2x 32A and 2x 20A circuits (all 240v) extension-ed into one room so I can test some pretty large things if required. What? You could run this whole thing from a single 240v socket....its 14amps at the voltage, would run comfortably even on the 20A circuit And you could easily run a single PCI to each hashboard, if you have a server style PSU with breakout boards...its all about running the proper gauge wiring. |
|
|
|
the names are not the same - they change some characters so it looks the same at first sight.
yea they added a 'r' right after the a in my name...bastards |
|
|
|
|
Cool i guess I'm famous enough to have a copycat scammer lol
|
|
|
|
Russian proverb says of the cat
I picked SF 100 to the office of my company in China and sent to Russia, will make a full report on its work in a few days.
Dont listen to all the trolls on this forum. Look forward to see your report...would love to see pool side specs over 24 hours of both LTC and BTC side, as well as power draw at the wall. Thanks! |
|
|
|
Your photos fail to show how it is powered making it less likely it is real. You also do not show a working unit.
lol i just giggled a bit when I saw this...Id love to hear your logic on how this is "fake" when you were promoting the cloudthink.io scam and all they had was a horribly done "graphic" images of a fake miner. |
|
|
|
Hi,
I am looking to buy at least 3 used antminer s5s. I would like to pay around 350 per unit but I am willing to consider any offers.
I have two with the 3d printed cooling mods and double fans for quieter operation. Ill sell you the whole setup plus stock fans and parts for $375 |
|
|
|
Which is exactly why I advocated that no one create empty threads until - if ever - they arrived. Yea its pretty sad that all these high post count "reviewers" (aka people just trying to get free hardware), fall for these scams and promote them on these forums which causes people that don't know better to put money in these scams. Stop promoting shit in hopes that you'll get free stuff, your screwing other people over. |
|
|
|
|
Show Posts
