Is the WD80EFPX worth the extra $43 over the WD80EFZZ?

It depends on the use. B doubles the cache to 256 MB and raises the internal transfer rate to 215 MB/s, which helps in multi-drive NAS arrays. For a single drive or light use, A at $470.25 is the better value.

Which is better for a NAS?

Both are CMR Red Plus drives rated for 180 TB/year and built for 24/7 NAS operation, so either works. B is the newer revision with more cache and a stated 600,000 load/unload cycles.

Do both use CMR recording?

Yes. Both the WD80EFZZ and WD80EFPX use conventional magnetic recording, which matters for RAID rebuild performance.

Which one is quieter?

Only B states a sound emission figure, 24 dBA. A's listing gives no noise figure, so B is the safer pick if noise is a concern.

Are these drives the same speed?

Both spin at 5640 RPM. B has the higher internal transfer rate, 215 MB/s versus 185 MB/s, and twice the cache, but real-world sequential speed will be close.

How much do they cost right now?

As of November 8, 2026, A is $470.25 at Orange Hardwares and B is $512.99 at TeciSoft. Each is listed new at one store.

WD Red Plus 8TB NAS Hard Drive vs WD Red Plus 8TB NAS Hard Drive

Both are 8 TB WD Red Plus CMR NAS drives at 5640 RPM with a 180 TB/year workload rating, so the choice comes down to the revision. The WD80EFPX (B) is the newer design with 256 MB cache and a 215 MB/s internal transfer rate, versus 128 MB and 185 MB/s on the WD80EFZZ (A). At the listed prices, A is $470.25 at Orange Hardwares and B is $512.99 at TeciSoft as of November 8, 2026, so B costs about $43 more. Buy B if you want the newer, faster-cached revision; buy A if the lower price matters more than the cache and transfer-rate gap.

Today the WD Red Plus 8TB NAS Hard Drive costs $42.74 less at its best price.

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