Which is faster, the Patriot P220 or the Silicon Power A55?

The Patriot P220. It is rated up to 550 MB/s read and 490 MB/s write, against 460 MB/s read and 450 MB/s write for the 256GB A55. Both are SATA drives, so neither comes close to NVMe speeds.

Which is cheaper right now?

The Patriot P220 at $39.99 at eBay as of November 6, 2026. The Silicon Power A55 is $45.97 at Amazon as of the same date, about $6 more.

The P220 publishes a 120 TBW endurance rating and a 1.5 million hour MTBF; Silicon Power does not publish a TBW figure for the A55. In practice both are budget drives, and the A55 has a larger base of user ratings reporting few failures.

Will the A55 fit a thin laptop?

Yes. Its 7mm height suits ultrabooks and tight bays. The catch is the reverse: in older 9.5mm bays it can sit loose without a spacer.

Is the A55 worth the extra $6?

Only if you need the 7mm slim height or want the larger review base. Otherwise the P220 is faster on paper and cheaper.

Can either replace a laptop hard drive?

Yes. Both are 2.5-inch SATA III drives, a direct swap for a 2.5-inch HDD. Expect faster boot and app loading, but SATA-level speed, not NVMe.

Patriot P220 256GB SATA SSD vs Silicon Power A55 256GB SSD

Both are 256GB SATA 2.5-inch drives, so the choice comes down to price and rated speed. The Patriot P220 is the faster drive on paper (550/490 MB/s, 120TB endurance) and costs less: $39.99 at eBay as of November 6, 2026, versus $45.97 at Amazon for the Silicon Power A55. Buy the P220 unless you specifically want the A55's 7mm slim profile or its longer track record of user reviews.

Today the Patriot P220 256GB SATA SSD costs $4.98 less at its best price.

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