Bitcoin

Intel details its Bitcoin-Mining ‘Bonanza Mine’ chips and 3,600-watt miner

Intel details its Bitcoin-Mining 'Bonanza Mine' chips and 3,600-watt miner

(Image credit: Intel)

At ISSCC 2022, Intel shared in-depth details of its new Bitcoin Bonanza Mine mining ASICs and explained how it merges 300 of these tiny power-efficient chips into a powerful 3,600W miner that offers up to at 40 THash/s performance. [EDIT: We have since found the specifications and pricing for the newer model that is shipping to customers, which you can read about here.]

We first discovered Intel’s Bonanza Mine ASICs in a listing for a presentation at ISSCC Conference 2022, and the information below comes from presentations at the event. This hardware covers Intel’s first-generation mining chips, known as BZM1, but the company has already moved to its second-generation “Bonanza Mine” ASIC, known as BZM2, which it is now upgrading to. available to customers to challenge the likes of Bitmain and MicroBT.

After news of the company’s efforts broke, Intel finally officially acknowledged its blockchain/Bitcoin silicon program, revealing that it already had several big customers for the second-generation chips. This includes BLOCK (led by CEO Jack Dorsey of Twitter fame), Argo Blockchain, and GRIID Infrastructure.

Intel has yet to share details of the second-generation chips and systems, but we do know that they are derivatives of the BZM1 ASICs shown below.

Bonanza mine

(Image credit: Intel)

Here we can see the BZM1 chip in its rather small 7 x 7.5 mm (132 ball) exposed-die FCLGA package. As you will see below, 300 of these chips power the system.

Each chip die measures 4.14 x 3.42 mm, for a total of 14.16 mm^2 of silicon, so these are relatively small shards of silicon. The smaller die size improves throughput and maximizes wafer surface utilization (up to 4,000 dies per wafer), helping to maximize throughput (although it does require a larger die capacity). cutting/packaging of the wafers). Intel says it’s 7nm ASIC, but doesn’t specify if it’s its own “Intel 7”, the original 7nm before renaming the process node to “Intel 4” , or TSMC’s 7nm process.

Each Bonanza Mine ASIC has 258 mining engines, and each engine computes parallel SHA256 double hashes. These motors make up 90% of the die area and operate at what Intel calls an “ultra-low” voltage of 355 mV.

Each ASIC operates between 1.35 and 1.6 GHz at 75°C, consuming an average of 7.5 W each while reaching up to 137 Ghash/s. This is equivalent to 55 J/THash/s at 355 mV.

Zooming in on the 300 chips in the system, there’s a total of 4,248 mm^2 of silicon that delivers up to 40 TH/s at 3,600 W of power consumption. It is clear that Intel will have to be much more competitive against existing miners from Bitmain and MicroBT. For example, Bitmain’s Antmienr S19j Pro 104T does 104 THash/s at 3068W, while the newest model, the S19j XP, does 140 THash/s at 3010W. Again, these are the Intel’s first-generation Bonanza Mine chips, but its new deals are for second-generation “BZM2” models that remain shrouded in mystery.

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Bonanza mine

(Image credit: Intel)
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Intel Bonanza Mine ASIC

(Image credit: Intel)