I think that the performance of B3 is low because of memory.
If sufficiently fast memory is loaded probably about 4kH/s should be able to go.
However, the hash board is not equipped with memory, it is just a little loaded on the controller. This seems to be a bottleneck.
The correspondence with software is about overclocking, and it is necessary to change the hardware to make it faster, and from the cost point of view BITMAIN is unlikely to provide it.
In addition, it is a rumor that BITMAIN will launch the next generation AI chip this summer. Probably this will be fairly high performance. I imagine that it is shaped like a memory mounted on one chip like Z9. This is probably also a powerful weapon for mining.
Realistically thinking, we used it for inventory disposal of old chips. It seems that BITMAIN sold the second batch earlier and the fact that the GPU minor for Tensoriy was sold as a product in China also affected it. I heard that the miner originally distributed by UUpool also cracked this and ignored the GPL license at all.
BITMAIN sells it based on the policy of determining the price based on ROI. If there is a sudden change in this, and the customer suffers a great disadvantage, it is customary to compensate with refund or issue of coupon ticket. There was a refund of 580USD only to buyers of the first batch this time. There is nothing in the second batch at all.
BITMAIN is not directly responsible for changes in ROI. However, if you purchase a product that does not provide sufficient performance from the customer's point of view, or if the result is different from the original vision, you will want to seek compensation. But, they do not have responsibility. Since the algorithm is open source, everyone can make miner from scratch entirely.
Based on the above, we believe that additional compensation of around 1000 USD is appropriate. Towards buyers of each batch.
Considering the commitment of BITMAIN's responsibility, I think that it should be a coupon instead of money.
Or, as much as 1200USD discount is done for miner equipped with next generation AI chip etc ....
