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Acer America
Acer America Corp. is a computer manufacturer of business and consumer PCs, notebooks, ultrabooks, projectors, servers, and storage products.


333 West San Carlos Street
San Jose, California 95110
United States


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August 20, 2021 |

Cryptomining Hardware

Demand for mining hardware, both GPUs and AISCs, is high, but builders face supply limitations.

SOME BELIEVE BITCOIN and other digital currencies are the future of commerce, while others call them “”snake oil 1s and 0s.”” But there’s no denying that cryptocurrency miners—from one person with two computers to huge data centers dedicated to bitcoin processing—are buying all the hardware they can find.

The demand for building computers for cryptomining is keeping AVADirect Custom Computers busy with about 50 requests a day. “We have enough inquiries to keep us busy building nothing but mining machines for a year if people buy what they say they will buy,” says Alex Sonis, CEO and founder of the Twinsburg, Ohio, company.

Processing cryptocurrency transactions, or mining, requires powerful computer hardware. Every 10 minutes or so, a new group of transactions, called a block, is released, and the miner who does the most work creating the block, called proof-of-work, gets paid in bitcoin by an exchange platform like Coinbase or another bitcoin ecosystem player.

Bitcoin processing started on CPUs, but miners quickly discovered GPUs processed more transactions per second and switched. “Miners are still mostly using GPUs,”” says Adam Lesh, founder and CTO at The Maker Foundry, a consulting and development firm, and co-chair of the CompTIA Blockchain Advisory Council.

The biggest miners, however, now want custom ASIC chips designed for particular digital currencies, according to Lee Bratcher, who founded the nonprofit Texas Blockchain Council two years ago as a “chamber of commerce” for blockchain. He estimates there are hundreds of small miners in Texas, with maybe two dozen major mining farms. “All the big miners have switched to ASIC chips designed for Bitcoin or Ethereum,”” he says.

NVIDIA GeForce RTX 3080 Ti graphics
chip. Photo courtesy of NVIDIA.

Supply is an issue, however. Bratcher says the leading manufacturer of the ASIC-based Antminer system, Bitmain, won’t promise any more deliveries sooner than the end of October. “ASIC chips are hard to find, but some are coming from China to the U.S. because the Chinese government officially outlawed bitcoin mining.”

GPUs, which is what most of Sonis’ customers want, are also in short supply. “We work hard with NVIDIA but can get only a handful of GPU boards at a time,” he says, even though he builds around 300 systems per week.

AVADirect builds only custom systems as chosen and configured by the buyers on its website. All of AVADirect’s systems are sold on a cost-plus basis, and for mining hardware, the GPUs largely determine the cost. “Some customers will buy a system with two video cards to experiment with mining,” says Sonis. “Then they’ll come back and want eight GPUs in a 4U chassis with memory and motherboard. If the NVIDIA 3080 is $1,500 or so, that system may cost around $15,000.”

He adds, “A couple of years ago the market was much better, because all the hardware was available.” 

For the cryptominers themselves, it’s not hard to get into the market but it is hard to make money given all the competition, so for most it’s a hobby, Lesh says, adding that some crypto farms are getting out of the business.

Lesh suggests system builders look beyond cryptomining to other blockchain uses that rely on the same hardware. “Private blockchains, used by warehouses and industrial sites with lots of transactions from IoT sensors and asset tracking tools, also need systems,” he notes. These tend to use only one or two GPUs since processing speed is less important for a private blockchain than when competing with other miners. “Expertise in those systems, like the Hyperledger Fabric for private blockchain, would be a good long-term business,” he adds.

Sonis cautions against stocking up on specialty hardware when you can get it. “We order based on what the customers order,” he says. “I don’t want to get stuck with a bunch of inventory if Bitcoin drops to three cents next week.”

Image: iStock

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