It's interesting that Samsung has allowed pricing to drop as low as it has. Until the recent currency slide, the 850 EVO 250GB hit as little as 53 UKP total in the UK (Amazon during the xmas period). Assuming Samsung is still making a decent profit at these prices, perhaps the low pricing is merely their attempt to drive volume in order to make up for financial issues they've been having in other areas of their business empire. Normally, SSD vendors don't allow pricing to go so low if they don't have to - this happened in late-2012/early-2013 after massive offer-related sales of the 830 256GB showed there was just no need to position a 256GB mainstream unit that low, so pricing across the board from all vendors shot back up again (around 150 UKP) and stayed there for over a year until things finally started to move once more with the 840/EVO.
Can anyone compete with Samsung? Well, whatever happened to SanDisk's stated goals from a year or so ago that they wanted to rapidly ramp up capacity to 4TB, 8TB, etc.? Pricing is obviously key, but there's a core market who care about capacity just as much. I really wanted to buy a 950 Pro NVMe for my laptop, but in the end I couldn't ignore the fact that an 850 EVO SATA would provide the same capacity for half the cost, and atm the higher capacity PCIe M.2 modules do seem to have thermal issues.
Perhaps we still need to see the emergence of a pricing/capacity sweetspot that will really drive sales; until recently I'd have said that would be a 512GB device, but I've noticed a lot more people in forums recently talking about wanting 1TB minimum for their main SSD purchase.
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