Note: Our SSD testbed is currently producing suspiciously slow scores for The Destroyer, so those results have been omitted pending further investigation.

Note2: We are currently in the process of testing these benchmarks in PCIe 4.0 mode. Results will be added as they finish.

AnandTech Storage Bench - Heavy

Our Heavy storage benchmark is proportionally more write-heavy than The Destroyer, but much shorter overall. The total writes in the Heavy test aren't enough to fill the drive, so performance never drops down to steady state. This test is far more representative of a power user's day to day usage, and is heavily influenced by the drive's peak performance. The Heavy workload test details can be found here. This test is run twice, once on a freshly erased drive and once after filling the drive with sequential writes.

ATSB Heavy
Average Data Rate
Average Latency Average Read Latency Average Write Latency
99th Percentile Latency 99th Percentile Read Latency 99th Percentile Write Latency
Energy Usage

The 250GB Samsung 980 PRO is a clear improvement across the board relative to the 970 EVO Plus. It still has some fairly high latency scores, especially for the full drive test run, but that's to be expected for this capacity class. The 1TB model seems to have sacrificed a bit of its full drive performance for in favor of a slight increase in empty-drive performance—the enlarged SLC caches are probably a contributing factor here.

Both drives show a significant reduction in energy usage compared to the older generation of Samsung M.2 NVMe drives, but there's still a ways to go before Samsung catches up to the most efficient 8-channel drives.

AnandTech Storage Bench - Light

Our Light storage test has relatively more sequential accesses and lower queue depths than The Destroyer or the Heavy test, and it's by far the shortest test overall. It's based largely on applications that aren't highly dependent on storage performance, so this is a test more of application launch times and file load times. This test can be seen as the sum of all the little delays in daily usage, but with the idle times trimmed to 25ms it takes less than half an hour to run. Details of the Light test can be found here. As with the ATSB Heavy test, this test is run with the drive both freshly erased and empty, and after filling the drive with sequential writes.

ATSB Light
Average Data Rate
Average Latency Average Read Latency Average Write Latency
99th Percentile Latency 99th Percentile Read Latency 99th Percentile Write Latency
Energy Usage

The Samsung 980 PRO does not bring any significant improvements to performance on the Light test. Peak performance from most high-end NVMe drives is essentially the same, and the only meaningful differences are on the full-drive test runs. Aside from a relatively high 99th percentile write latency from the 250GB 980 PRO, neither capacity has any trouble with the full-drive test run.

Samsung has made significant improvements to energy efficiency with the 980 PRO. Samsung's previous generation of M.2 NVMe drives were among the most power-hungry in this segment, with their performance potential largely wasted on such a light workload. The 980 PRO cuts energy usage by a third compared to the 970 generation drives, bringing them more into competition with other high-end M.2 drives. But as with the Heavy test, there's still a lot of room for improvement as illustrated by drives like the WD Black SN750.

Cache Size Effects Random IO Performance
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  • Chaitanya - Tuesday, September 22, 2020 - link

    Worse than outgoing 970 series, thanks but no thanks Samsung.
  • Alistair - Tuesday, September 22, 2020 - link

    I don't understand the conclusion here. The results were way worse than I expected. It doesn't appear like there is any reason to buy this at all.
  • Exodite - Tuesday, September 22, 2020 - link

    So much this.

    Why wouldn't I get a, different, 2TB drive for the same price as the 1TB 980 Pro when the performance difference is negligible even in synthetic loads?
  • goatfajitas - Tuesday, September 22, 2020 - link

    Its also cheaper, more like a 970 EVO replacement. Thinking of it that way, its a nice bump to replace my EVO. They really shouldn't have called it Pro though.
  • Alistair - Tuesday, September 22, 2020 - link

    it isn't even a bump over the PCIe 3.0 Hynix drive...
  • lmcd - Tuesday, September 22, 2020 - link

    It's a small bump over the Hynix drive. It's better in latency and burst. Those are both very relevant metrics for day-to-day usage.
  • Spunjji - Wednesday, September 23, 2020 - link

    None of these metrics are really relevant in day-to-day usage. In that respect, you won't really notice the difference between any of these and a decent SATA drive.
  • CheapSushi - Thursday, December 17, 2020 - link

    It absolutely is. In fact, Optane is even better. The vast majority of people spend their time doing low queue depth random read and write. It IS noticeable unless you ONLY use your PC for Gmail and Facebook.
  • shaddixboggs - Wednesday, September 23, 2020 - link

    Lol, why do you think this? You cannot and will not notice that small of a difference.
  • Tomatotech - Tuesday, September 22, 2020 - link

    It does seem rather overpriced. Something like the ADATA SX8200 PRO 1TB which is a perfectly fine fast drive hovers around half the price of this. The ADATA drive is slightly worse performing but it’s still a bloody fast NVMe drive and the difference is near undetectable to the user.

    Other drives are also cheaper and give sustained performance under full disk write (which the ADATA doesn’t, but if you regularly write 900GB in one go to your NVME drive you have special requirements.)

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