4 ms·
How much more read/write performance do you get for twice the energy usage? A performance per watt comparison would be interesting here.
by luckystarr 6y ago
How much more read/write performance do you get for twice the energy usage? A performance per watt comparison would be interesting here.
- megous 6y agoDepends on use. Queued random access 4kiB block read IOPS can be 3 orders of magnitude different. (120 IOPS vs 500k IOPS for example)
- wtallis 6y agoSamsung quotes 148 MB/s per watt for the PM1643, for sequential transfers. Hard drive performance tops out around 270 MB/s and draws something less than ~9.5W, so the SSD is 3-5x more efficient for sequential transfers. For random IO, it's several orders of magnitude difference in performance and efficiency. The most power-efficient consumer SSDs are an order of magnitude more efficient for sequential transfers than the Samsung PM1643. Eg: https://www.anandtech.com/bench/SSD18/2460 https://www.anandtech.com/bench/SSD18/2460