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> a lot of M.2 2280 NVME SSD still being sold on the market are PCI-E 3.0. That's true, but there are multiple PCI-E 4.0 available on the market for a year alr

> a lot of M.2 2280 NVME SSD still being sold on the market are PCI-E 3.0. That's true, but there are multiple PCI-E 4.0 available on the market for a year already, with benchmarks available too..

walrus01 6y ago
but look at the benchmarks for this drive versus the Samsung 980 Pro 1TB. both are selling at $199 from newegg right now... but the WD sn850 blows away the 980 pro in nearly every benchmark. I still have a greater degree of trust in Samsung for reliability and greatly exceeding their specified write-endurances (torture tests of MLC samsungs from 3 years ago illustrate that for a desktop workstation, you would have to REALLY abuse them to ever run into the write endurance problem).
- riku_iki 6y ago
  > but the WD sn850 blows away the 980 pro in nearly every benchmark. I think they have some cache tuning differences, because while WD wins in many benchmarks by 30-40%, it losses the same 30-40% on long sequential writes. I have no ssd expertise, so, can't comment why this could happen.
- cm2187 6y ago
  What I am really surprised by is the price of the enterprise ones (samsung PM1735, you can get a 3.2tb for like £600). Barely more expensive than consumers with massive performance (8GB/s read) and endurance. Not sure where is the catch.
  - wtallis 6y ago
    The catch is that pricing and availability for grey-market enterprise drives is wildly inconsistent, and you often don't get a manufacturer's warranty. Also, enterprise drives don't use SLC write caching, so their peak write performance is usually substantially lower than on a consumer SSD. And not that it matters much for a desktop, but enterprise drives also don't do idle power management, so they stay pretty warm even when you're not using them.
- ComputerGuru 6y ago
  It’s not just endurance. I wouldn’t use anything other than an older Samsung Pro (not an 850 Pro, before they went TLC), a Samsung Z, or an Intel Optane for something like a ZFS slog or a hardware RAID write accelerator cache - they have unmatched latency for these applications which cruet came by via their technical choices and is independent of write throughout.

> a lot of M.2 2280 NVME SSD still being sold on the market are PCI-E 3.0. That's true, but there are multiple PCI-E 4.0 available on the market for a year already, with benchmarks available too..

walrus01 6y ago

but look at the benchmarks for this drive versus the Samsung 980 Pro 1TB. both are selling at $199 from newegg right now... but the WD sn850 blows away the 980 pro in nearly every benchmark. I still have a greater degree of trust in Samsung for reliability and greatly exceeding their specified write-endurances (torture tests of MLC samsungs from 3 years ago illustrate that for a desktop workstation, you would have to REALLY abuse them to ever run into the write endurance problem).

riku_iki 6y ago
> but the WD sn850 blows away the 980 pro in nearly every benchmark. I think they have some cache tuning differences, because while WD wins in many benchmarks by 30-40%, it losses the same 30-40% on long sequential writes. I have no ssd expertise, so, can't comment why this could happen.
cm2187 6y ago
What I am really surprised by is the price of the enterprise ones (samsung PM1735, you can get a 3.2tb for like £600). Barely more expensive than consumers with massive performance (8GB/s read) and endurance. Not sure where is the catch.
- wtallis 6y ago
  The catch is that pricing and availability for grey-market enterprise drives is wildly inconsistent, and you often don't get a manufacturer's warranty. Also, enterprise drives don't use SLC write caching, so their peak write performance is usually substantially lower than on a consumer SSD. And not that it matters much for a desktop, but enterprise drives also don't do idle power management, so they stay pretty warm even when you're not using them.
ComputerGuru 6y ago
It’s not just endurance. I wouldn’t use anything other than an older Samsung Pro (not an 850 Pro, before they went TLC), a Samsung Z, or an Intel Optane for something like a ZFS slog or a hardware RAID write accelerator cache - they have unmatched latency for these applications which cruet came by via their technical choices and is independent of write throughout.