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1  Economy / Computer hardware / [WTB] Antminer S15, T15, or T17 on: July 06, 2019, 11:53:40 PM
Looking to pick up a couple of S15, T15, or T17. Please let me know your price in BTC or LTC. Will be using a forum escrow for this transaction.

Shipped to Washington, DC.
2  Bitcoin / Hardware / Whatsminer M21 Available for Pre-Order (~August) - 31TH:1860W on: April 15, 2019, 07:01:58 PM

Price is $850 for the pre-order currently.

ATTENTION: This product is currently in pre-sales stage, the order will be shipped during August 10 ~ 20, 2019. For more details, please contact

Whatsminer M21 is 12nm ASIC miner for SHA-256 Algorithm,it can mine Bitcoin or Bitcoin cash with hashrate of 31Th/s (+-5%). Power consumption is 1860W (+-10%).


Weight    7.15 kg

31 Th/s (+-5%)
Power Consumption    

1860W (+-10%) @ 31th/s
Shipment Date    

2019/8/10 ~ 2019/8/20

440mm(L) x 200mm(W) x 300mm(H)

Chips Process Technology    

12nm TSMC
Working Temperature    

-5℃ ~ 40℃

180 days after shipment
3  Bitcoin / Mining speculation / Bitmain BM1397 2nd-Gen 7nm Chip on: February 18, 2019, 01:52:20 PM
Bitmain has announced that they have developed their 2nd-gen 7nm chip, operating at an efficiency of 30J/TH. Link to blog post:

A 28.6% jump in claimed efficiency is huge if this turns out to be true.
4  Economy / Computer hardware / [FS] Avalon 821's + APW5's (USA) Shipping Included on: August 27, 2018, 08:46:58 PM
Selling off some of my miners as part of my effort to consolidate!

4 Avalon 821's (w/AUC3) for sale, $150$125 each, shipped within the ConUS from Washington, DC. In excellent condition, run in air-conditioned environment with filtered air. Blown out bi-weekly.

4 APW5's for sale, $150 each, shipped within the ConUS from Washington, DC.

Will be using forum escrow for this sale at buyer expense.

Edit: Revised prices and listing
5  Alternate cryptocurrencies / Speculation (Altcoins) / Litecoin Difficulty Vs. Price on: June 26, 2018, 05:35:38 PM
With the continued drop in LTC-USD price, we're finally seeing sustained drops in LTC difficultly as many miners are starting to run at a loss. This could actually be a combination effect with some miners underclocking their machines to cope with the summer heat/increase their efficiency.

LTC difficulty is currently ~7.3% off its peak, with a further ~+5% (to 9.9M) decrease projected for the next retarget!

Assuming price stays below $100/LTC, how low do you think difficulty could drop? I'm thinking 9M is going to be the floor, as summer heat really starts to peak and those who kept their machines running in the hopes of a price pump start shutting them off.

Interesting to see how the difficulty kept exploding from March to the start of June, despite the pretty much sustained decrease in LTC price, as the result of Bitmain just s******g out units.

Data from BitInfo Charts shown below, with projected difficulty coming from Litecoin

6  Economy / Computer hardware / [WTS] Used Avalon 741 - $350 Shipped on: June 07, 2018, 10:47:10 PM
Selling some of my Avalon 741ís, Iím heat limited and need to consolidate my heat output. Looking for $350 shipped in the CONUS. Open to trading for Avalon 841ís at a rate of 3:1. Have 8 available.

Edit: pictures added
7  Alternate cryptocurrencies / Mining (Altcoins) / Antminer L3++ on: April 17, 2018, 07:53:58 PM
So I was looking at the Bitmain store page just now and noticed that the L3+ is now called the L3++ and shipping the first week of May. No specs on it, other than that it may be higher than the L3+.

Anyone have some details on this? Lower power consumption maybe?
8  Economy / Computer hardware / [WTB] Antminer L3+ 0.16BTC Shipped [US] on: March 16, 2018, 11:37:07 PM
Looking to buy an Antminer L3+ from a December or newer batch for 0.16 BTC shipped to the Washington D.C. area. Will need to use OgNasty or MinerJones for escrow.
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