Which is faster, the Seagate FireCuda X1070 or the WD SN850P?

On paper the Seagate is faster: 7,200 MB/s read and 6,500 MB/s write. The given WD specs list no speeds, so check the WD's rated figures before assuming a gap in real use.

Which is better for a ROG Ally or Xbox Series X?

The Seagate lists the ROG Ally and Xbox Series X as compatible and is marketed for handheld gaming. The WD SN850P is a standard M.2 2280 NVMe drive, but its compatibility list is not given here.

Is the WD SN850P worth $439.99 for 4 TB?

That was the best new price at Staples as of November 7, 2026, but the same drive was $321.99 on November 3. At the low end it is a strong buy; at $439.99, compare it with the Seagate's price first.

The Seagate carries a 5-year parts and labor warranty. The WD's warranty is not stated in the given specs, so check it before deciding on long-term coverage.

Can I get more than 4 TB?

Only the WD SN850P offers more, up to 8 TB. The Seagate FireCuda X1070 is listed only in 4 TB.

Do either come with extras?

The Seagate includes a 1-month Xbox Ultimate Pass trial, a 2-month Adobe Creative Cloud Pro trial and 3-year Rescue Data Recovery Services. The WD's box contents are not given.

Seagate FireCuda X1070 SSD 4TB vs WD Black SN850P NVMe SSD

Both are PCIe Gen 4 M.2 2280 NVMe drives, so the choice comes down to capacity, speed and price. The Seagate FireCuda X1070 4 TB is rated at 7,200 MB/s read and 6,500 MB/s write and is built for handhelds and consoles. The WD SN850P 4 TB is $439.99 at Staples as of November 7, 2026, and has traded between $321.99 and $439.99 since November 3. Buy the Seagate for raw speed and handheld fit. Buy the WD if you want a drive with a long public track record and a wide capacity range, and watch its price.

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