For comparison, the WD Blue SN550 managed 1414MB/s and 1434MB/s respectively, and that was already embarrassing some of the lower-end competition. CrystalDiskMark also has a much tougher random 4K, 8-queue-8-thread test, in which the SN570 scored a 1830MB/s read speed and a 1889MB/s write speed – both utterly superb for a PCIe 3.0 drive. Like a 300mph car, you’re unlikely to ever get close to these speeds in the everyday traffic of Windows data transfers, but what makes the SN570 special is how well it maintains the pace under load. Those top speeds also stood up in CrystalDiskMark’s standard sequential test, in which the SN570 recorded a 3555MB/s read speed and a 3059MB/s write speed. The only disappointment here is the lack of a 2TB version, though 1TB is usually enough for most PC builds even without any supplementary hard drives. ![]() ![]() You’re looking at just £37 / $54 for the 250GB model, £49 / $58 for 500GB and an especially enticing £93 / $110 for the 1TB model that I received for testing. In fact, right now all three o its capacities are cheaper than their SN550 equivalents were Katharine reviewed the latter in 2020. The WD Blue SN570 is no less of a budget-friendly SSD either. ![]() The 1TB SN550? Only ever promised 2400MB/s reads and 1950MB/s writes. Still, the SN570 asserts even greater ambition, claiming maximum sequential read and write speeds of 3500MB/s and 3000MB/s respectively on the 1TB model. Perhaps I’m being a bit harsh on the earlier Blues – the WD Blue SN550 actually made it into our best SSDs for gaming rankings, and laid the groundwork for this new model with higher read/write speeds than you might expect from an affordable SSD.
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