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Comment by nijave

2 years ago

I'm curious what the real cost of power protection is for the manufacturer. Adding caps or a bit of backup power seems like it _should_ be a fairly cheap compromise to maintain performance without lying about persistence

M.2/2280 makes it hard. Can't use cheaper aluminum can capacitors due to their size/height. The low profile (tantalum?) capacitors are expensive and take up a lot of PCB area, forcing a two sided PCB design on 2280 (the 110mm version would be better here). M.2 only provides 5V. On other form factors you get 12V and can get more charge stored for the same capacitance (q=CV) without needing a DC-DC converter.

define 'cheap'?

You already have the device shipped to you under $40 with packaging, shipping from China, to the distributor, to you; with a profit at the every step.

  • $1-5

    I'd gladly pay a few bucks extra for a drive that doesn't delete my data when the power fails

    • > $1-5

      For a $20 device this is 5-25% of the cost the product, assuming $40 retail cost. It would be 1-5% for a $100 product, of course.

      You would pay for a such device, but 99% of people wouldn't. Now you have a product which costs 5-25% higher than all your competitors and in the world where the price dictates the sales you have no opportunity to sell your product.

      NB to be sure on the prices I've checked Amazon. There are SSDs what are cheaper than many mounting trays, enclosures (without drives) and tray kits.

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