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Could someone help me understand something I noticed recently when shopping around for SSDs - the pretty large difference in power usage between the more consum

Could someone help me understand something I noticed recently when shopping around for SSDs - the pretty large difference in power usage between the more consumer-targeted models vs datacenter models. How much of it is attributed to larger memory sizes vs other factors? Examples: - Intel 660p 2TB: 100mW active. Older and slower, but only 100mW! - Samsung 990 Pro 2TB: 5-6 watts - Micron 9400 >=8TB: 15-25 watts ! Intel: https://www.intel.com/content/www/us/en/products/docs/memory-storage/solid-state-drives/consumer-ssds/660p-series-brief.html https://www.intel.com/content/www/us/en/products/docs/memory... Samsung: https://download.semiconductor.samsung.com/resources/data-sheet/Samsung_NVMe_SSD_990_PRO_Datasheet_Rev.1.0.pdf https://download.semiconductor.samsung.com/resources/data-sh... Micron link: https://media-www.micron.com/-/media/client/global/documents/products/product-flyer/9400_nvme_ssd_product_brief.pdf https://media-www.micron.com/-/media/client/global/documents...

rektide 3y ago
1.6/0.6M read/write iops the Micron. There's probably still some difference, but iops/watt is probably a more reasonable way to look at these.
wtallis 3y ago
The 100mW active power rating for the 660p is almost certainly measured while running MobileMark, a general system performance benchmark that is very lightweight and leaves the storage completely idle for the bulk of the test duration. So that power rating is really more of an indicator about idle power in a machine sitting at the desktop doing nothing (but not in a suspend/sleep state at the system level). The 990 Pro power rating and the enterprise SSD power rating are both for a drive that's actually busy. The Micron 9400 has a controller with twice as many channels and none of the performance-sacrificing optimizations that consumer SSD firmware comes with.

rektide 3y ago

1.6/0.6M read/write iops the Micron. There's probably still some difference, but iops/watt is probably a more reasonable way to look at these.

wtallis 3y ago

The 100mW active power rating for the 660p is almost certainly measured while running MobileMark, a general system performance benchmark that is very lightweight and leaves the storage completely idle for the bulk of the test duration. So that power rating is really more of an indicator about idle power in a machine sitting at the desktop doing nothing (but not in a suspend/sleep state at the system level). The 990 Pro power rating and the enterprise SSD power rating are both for a drive that's actually busy. The Micron 9400 has a controller with twice as many channels and none of the performance-sacrificing optimizations that consumer SSD firmware comes with.