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1  Bitcoin / Pools / Looks like some of the big pools in china are having DNS problems on: November 25, 2021, 09:36:47 PM
Completely off the grid:

Not doing great but slowly improving:

Still a bit shaky:

Not sure if a network issue in the china firewall or what, but it would be interesting to see the failover data stats. One big pool going down like that could cascade to other pools getting knocked out when all the miners fail over to their secondary pools*

Unless they are using bitfury software, as that only allows one pool  Roll Eyes

Probably by the time you read this it will all be fixed, but its been going on for a while now, not sure how much its affecting mining or just access to the web sites.
2  Economy / Computer hardware / [WTB] T3-50T PSU on: May 28, 2020, 10:35:21 PM
As per topic does anyone have a psu from an Innosilicon T3-50T

One of mine has died.

3  Bitcoin / Mining speculation / Vote for Bitmain to enable Low Power Mode for T17, T17E, T17+, S17E, S17+, T19 on: May 18, 2020, 02:26:04 PM
With the halving biting deep into miners income, some have been able to scrape by at current BTC price levels by running their miners in Low Power Mode (LPM), this is just running the miners at lower speeds/voltages rather than Asicboost (originally tagged as LPM on the S9's)

Unfortunately however, not all of the current *17 range of Bitmain miners support this mode.

My current understanding is this:

LPM Supported  Grin
  • S17 (Low, Normal)
  • S17-Pro (Low, Normal, Turbo)

LPM NOT Supported  Angry
  • S17E
  • S17+
  • T17
  • T17E
  • T17+
  • T19
  • S19-Pro
  • S19

Seeing as it is possible to underclock and undervolt by manually hacking the gui or with third party firmware I feel it's not unreasonable to ask Bitmain to enable LPM on the miners that don't current support it.

Having contacted them directly and not having much luck I thought it might help if I had an idea of the miner community's opinion on the matter.

Please vote here and we can bring this thread to their attention, who knows, it might work.  Undecided

I'll leave the thread unlocked, but moderated in case it wanders off topic, otherwise your thoughts would be appreciated.

Yes I'm aware there are other manufacturers, that may or may not have low power modes  :P
No I don't know if its physically impossible for the hardware to do this, but I doubt it.
As mentioned I'm aware of third party firmware that may enable this, but not everyone wants to pay a dev fee or risk using non-official firmware
2nd Jun 2020 - Added T19
27th Aug 2020 - Added S19-Pro and S19
4  Economy / Computer hardware / WTS - Bitmain S15 - 28TH (SOLD) [US] on: January 12, 2020, 09:28:34 PM
I have 8 7 6 5 4 0 x Bitmain S15 - 28TH for sale. (all sold)

They are currently hosted in the US

Price $475 each inc shipping to the US if buying individually

Contact me for shipping costs outside of the US

Offers considered

Escrow at buyers cost if you need it.


S15 Power ModeHigh-Performance ModeEnergy-Saving Mode
Hash Rate28 TH/s 2 %18 TH/s 2 %
Power Consumption1596 W 7 %900 W 7 %
Power Efficiency57 J/TH (25 C temperature condition)50 J/TH (25 C temperature condition)
Network connection modeEthernetEthernet
Product dimensions240mm*178mm*296mm240mm*178mm*296mm
Product dimensions(with package)486mm*265mm*388mm486mm*265mm*388mm
Product weight (without package)≈7 kg≈7 kg
5  Economy / Digital goods / [closed] on: November 26, 2019, 12:48:33 AM
items sold elsewhere
6  Bitcoin / Hardware / Bitmain Introduces the S17+ and T17+ on: October 09, 2019, 01:59:46 PM

Should be interesting to see the prices, I suspect they will be $3K plus if not more for the S17+, T17+ is about the same speed as a S17E but slightly less efficiency so maybe closer to $2.1 - 2.2?

S17+ is close to same efficiency as the S17Pro 50/53/56

T17+ is between S17E and T17e in terms of efficiency

It'll all come down to price, but I think this is the start of a major ramp up in difficulty and a direct attack on their competitors to wipe them off the board

Updated with prices:

S17+ $2833

T17+ $1802
7  Economy / Computer hardware / [WTS] Innosilicon T2T 24 on: September 02, 2019, 10:57:59 PM
All sold elsewhere
8  Economy / Computer hardware / [WTS] [US/Canada] Bitmain S9's inc PSU (various types) on: March 17, 2019, 11:53:00 AM

Looking to sell the following:

None available right now

Each type is priced in USD per miner including PSU plus shipping which will depend on where you want it shipped.

If you want more than one PM me and we can discuss.

Miners will be shipped in original packaging, they are used, and all have been running with zero issues at or above stated spec.

Located in Newfoundland and Labrador Canada. Miners have been colocated at Cryptoboreas

My trust speaks for itself, I also have a long standing ebay account which I can refer to.

Am happy if buyer wants to escrow with an established forum member such as Ognasty or philipma1957 any escrow fees will be at buyers cost.

PM me if you want to discuss further or post in thread.


P.S. Will update this thread with new miners as they come available.


US Miners
10 x S9i 14.0TH with APW3++ PSU's - Sold (escrow)
10 x S9i 13.5TH with APW7 PSU's - Sold (ebay)
10 x S9i 14TH including APW7 PSU (1800W at 220-240V) - Sold (no escrow)
5 x S9 14TH including PSU - Sold (privately)
5 x S9 14TH including PSU - Sold (no escrow)
3 x S9 14TH including PSU - Sold (privately)
7 x S9 13.5TH including PSU - Sold (no escrow)
3 x S9 11.5TH including PSU - Sold (no escrow)
15 x S9 13.5TH including PSU - Sold (privately)

9  Economy / Digital goods / [FREE] Bitmain $100 coupons on: June 16, 2018, 09:31:59 AM
I have:

40 x $100 Bitmain coupons valid till 1st July 2018

I will give them away for FREE if you want to PM me your bitmain ID

Only 1 per person.
No new (i.e. sub 25 post) accounts.

10  Economy / Computer hardware / [WTS]Antminer R4, Batch 2 (8TH/s) on: April 29, 2017, 10:47:58 PM
11  Economy / Computer hardware / [WTS] Spondoolies SP20E on: April 01, 2016, 01:36:27 AM
2 x Spondoolies SP20 (just miners no PSU) - SOLD
Working 100%
Free shipping in EU/UK (pm for international shipping cost)
Boxed in original packaging

Escrow via Ognasty if you want.
12  Economy / Computer hardware / [WTS] SP35 PSU's on: March 31, 2016, 11:22:03 AM
I have two SP35 PSU's for sale.

0.4 BTC each ONO

Free shipping to UK/EU

Contact me for shipping costs to rest of world.

Handy if you have a need to replace the hard to find and expensive Artesyn DS1600SPE-3 which are about $400 to buy new. Or if you have a load of Spondoolies kit and need some spares just in case.

Both PSU's come up with green lights when powered on, the machine they are in has a blown IC on the circuit board so doesn't hash.
13  Economy / Computer hardware / [WTS] Spondoolies SP35 [US] - will ship worldwide PRICE DROP on: February 18, 2016, 09:04:26 AM
I have the following for sale:

1 x Spondoolies SP35 (SP35DNN1) @ 1.5 BTC OVNO

2 x Spondoolies SP30 @ 1.1 BTC each - SOLD
1 x Spondoolies SP31 @ 1.5 BTC each - SOLD
1 x Spondoolies SP35 (running at 1/2 speed as one power supply is out of action) @ 1.0 BTC each - SOLD

They are located at a datacenter in the US

Please check my trust, I've done quite a few high worth transactions on here, and can also supply ebay credentials if necessary. Even so if you want to pay for escrow through someone reputable such as Ognasty that's fine too.

The slow SP35 needs a replacement PSU, or would be good for spares/repairs if you have other faulty units

PM offers or multi-unit deals
Shipping labels or UPS/Fexdex account details will need to be supplied
14  Other / Obsolete (selling) / [SOLD] 2 x Spondoolies-Tech SP10 (US) on: February 06, 2015, 06:19:20 PM
For Sale

2 x Spondoolies-Tech SP10 @ 1.25BTC each

2.25BTC for both

15  Economy / Computer hardware / [SOLD] Gridseed Blade 5Mh/s Scrypt ASIC [UK/EU] on: December 02, 2014, 10:15:10 AM
I have 4 Gridseed blades, with USB cables and power splitters, original boxes etc.

Just tested them and they all do what they say on the tin, just over 5Mhs

Checking on Ebay they are to be selling for $100 on and 70 on

So for a forum price lets say 0.165BTC each plus postage.

Sold for 0.7BTC including delivery
16  Economy / Computer hardware / [WTS] Spondoolies-Tech SP10 - SOLD on: November 25, 2014, 10:25:12 AM
SP10 for sale.

Currently hosted at Spondoolies datacenter in Israel

$450 + $150 shipping
17  Economy / Computer hardware / [WTS] [UK] AMD R9 290 with EK Waterblock and backplate & R9 270 on: November 20, 2014, 12:43:17 AM
Got couple of GPU's to sell

First up my XFX R9 290 4GB GDDR5 Dual DVI HDMI DisplayPort PCI-E Graphics Card with EK Acetal Full cover block and EK black backplate.

I have the original box and cooler etc which is included if you want it.

So thats over 300 worth of kit for only 180 inc RMSD! (Thats aprox $280 or 0.8BTC

Second up is a MSI Radeon R9 270 Gaming 2G AMD Graphics Card - 2GB
Just a regular MSI 270 Smiley

Works great, ran it, benched it, gamed with it lightly. Its been in my main office machine and hasn't skipped a beat. Temperatures are great. But, at low speed the rear fan spins up slower than the front fan. Not sure if its meant to be that way, and these run pretty cool anyway with the card cool and fans running at low speeds until you really start pushing it. For me it hasn't been a problem, and from the pic you can see when its under load the fans both run fine, but just thought it best to mention. Again I have all the box and gubbins.

Price 65 inc RMSD or aprox $100/0.3BTC

All payments by BT or PaypalGift or BTC at Preev exchange rate.

Escrow, of course, buyer pays any commission.
18  Economy / Computer hardware / [WTS] 830GH/s KnC Jupiter (November) - [SOLD] on: November 17, 2014, 11:34:43 AM
For Sale:

1 x KnC Jupiter November model
At stock it sits around 700GH/s
Can be easily overclocked to 830-840GH/s
Has run solid & reliable since purchased with no issues that affect its pool side performance.
Stock Fans, latest firmware
Pretty solid and quiet machine, almost silent, the only miner I can have sitting under my desk without noticing it really.

Price: $255 or Preev equivalent in BTC

1 x Innosilicon A1 based Dragon miner, with LCD display and PSU included.
Solid 1.02TH all day every day, never skips a beat, very reliable miner.

Price: $380/0.9BTC

Both In hand, in UK
Prefer pickup if possible, am in Surrey but can meet in London or can drop off within a reasonable radius of Guildford.
Shipping is extra, will accept labels sent via email and I have boxes for both, but the KnC isn't renowned for surviving shipping that well and I'd have to remove the coolers and ship separately.
The Dragon will ship no problem.

Escrow with reputable forum members (e.g. ognasty) no problem if buyer pays commission
19  Economy / Computer hardware / [WTS] - 2 x KnC Jupiters in the UK - escrow available - 1.5TH! on: May 16, 2014, 03:17:35 AM
I have two KnC Jupiters to sell, overall 1.5TH!

1 x October batch that is averages 650GH/s - Inc 1000W Gold PSU - SOLD

1 x November batch that is averaging up to 928GH/s
2.9BTC Inc 1300W Gold PSU
2.4BTC Exc 1300W Gold PSU

The October Jupiter is running stock 1.0.1 firmware with a tweaked to overclock it. Its run stable ever since I got it and I run it with the lid off.

The November Jupiter is running a 1.0.1 tweaked "padrino" type firmware that lets you overclock with the web interface past the 1000Mhz in the stock firmware. I run this with the lid on or off depending on the ambient temperature. Its not running at max clocks possible, just a couple of notches under. With the stock 1.0.1 firmware it runs at 750GH/s at 1000Mhz on the cores.

These numbers are on the stock fans, but in a cool environment, the November Jupiter runs better the cooler the ambient is, so running with the lid off and extra fans or aircon pointed at may get you more GH and you are free to add whatever fans you want.

Not much wriggle room on the prices of these, they are competitive with whats out there right now and have been faultless for the 6+ months they have been running.

Happy for escrow if you feel its necessary, buyer pays fees, either via or Ognasty who I have asked and he has agreed.

Free shipping in the UK, for overseas I can get quotes, so its clear shipping extra if outside the UK
20  Economy / Computer hardware / Bitmain Coupon Donations on: May 14, 2014, 03:59:19 PM
Coupon Donation thread
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