The best 1tb hard drive today is the Seagate BarraCuda 1TB ST1000DM010 at $99.99 ($99.99/TB), as of 2026-08-22.
Recomputed every refresh · last updated · 3 listings in the field
The Seagate BarraCuda 1TB ST1000DM010 takes it at $99.99/TB against the runner-up's $174.99/TB - a margin of $75.00/TB, or 75%. That gap is computed, not asserted: it is the arithmetic difference between the two cheapest qualifying listings we hold, and it is the whole of the reason one is above the other.
It sits in a field of 3 qualifying listings. It is new stock, CMR recording, SATA-6G. That is a wide margin - the winner is not narrowly ahead, it is in a different price band from the rest of the field.
Best = lowest cost per terabyte among in-stock, CMR-verified, known-brand SATA drives at 1TB, sold new. Not a benchmark ranking - the criterion is price and fitness, stated so you can disagree with it.
Most "best drive" pages do not tell you what best meant, which makes them impossible to argue with and therefore impossible to trust. Ours is one sentence and you can reject it: if you would rather optimise for warranty length, for a specific manufacturer, or for the lowest absolute price rather than the lowest price per unit, the full field is ranked below and you can take a different row knowing exactly what you are trading.
What the criterion deliberately excludes: any drive whose recording technology we could not confirm - unknown is not treated as CMR, any seller we do not recognise, and anything out of stock at the moment the page rendered. SAS drives are excluded here because they need a host bus adapter and a backplane that a desktop or consumer NAS does not have.
| # | Drive | Capacity | Price | Per TB | |
|---|---|---|---|---|---|
| WINNER | Seagate BarraCuda 1TB ST1000DM010 | 1TB | $99.99 | $99.99 | Buy |
| 2 | WD WD Purple 1TB WD11PURZ | 1TB | $174.99 | $174.99 | Buy |
| 3 | WD WD Red Legacy 1TB WD10EFRX | 1TB | $184.99 | $184.99 | Buy |
Tracking has just started for this page, so there is no change history yet. We will not invent one: the log fills when the winner actually changes hands, and until then the honest statement is that we began watching and nothing has moved. That emptiness is temporary and it is the reason this page will be worth more in three months than it is today.
Boot volumes, a single-drive backup target, and replacing a failed drive in old hardware that will not take anything larger. Almost nobody buys 1TB spinning rust to store things in 2026 - they buy it to keep something running.
1TB is where the price-per-terabyte logic that governs the rest of this site stops applying. A 1TB drive costs several times more per terabyte than a 16TB one, and it always will: most of the price is the motor, the head assembly and the enclosure, none of which get cheaper because the platter holds less.
Worth knowing: The cheapest 1TB listings on this site are used enterprise SAS drives at a fraction of the cost per terabyte, and they will not plug into a desktop without a host bus adapter. This page only names new CMR SATA drives, which is why its winner is dearer than the site-wide cheapest terabyte and answers a different question.
The 3 qualifying listings run from $99.99/TB to $184.99/TB, a spread of $85.00/TB between the cheapest and dearest drive that meets the same standard. That spread is worth looking at before you act on the verdict: a tight field means the market has settled and the winner is a few percent ahead of an equivalent product, while a wide one means the drives differ in something the criterion does not capture - usually product line, warranty term or how long the listing has been sitting.
2 brands are represented. More than one manufacturer competing at the same specification is what makes the cheapest listing meaningful rather than incidental.
The median listing in this field sits at $174.99/TB, 75% above the winner. Every drive in this field is the same capacity, so the per-terabyte ranking and the price ranking are the same ranking - the cheapest drive is the winner by definition.
Cost per terabyte is the right primary axis for spinning storage and the wrong only axis. It is right because capacity is what you are buying and because the number is comparable across brands, capacities and generations in a way a sticker price is not. It is not sufficient because a drive also has a workload rating, a warranty term, a recording technology and an acoustic profile, and none of those appears in the division.
The specific thing cost per terabyte hides is duty cycle. Enterprise nearline drives are rated for continuous operation and a workload measured in hundreds of terabytes written per year; desktop drives are rated for a fraction of that and are built to a price that assumes they spend most of their life idle. Both appear in this ranking when they meet the criteria, and at some capacities the cheapest terabyte is a desktop drive that will be unhappy in a NAS running scrubs every fortnight.
The practical way to use this page is to take the verdict as the starting point rather than the conclusion: it tells you what the cheapest fit-to-buy terabyte is today, and the ranked field beneath it tells you what you give up by choosing differently. If the runner-up is an enterprise drive a few percent dearer, that few percent is usually worth paying for an array that runs continuously.
One thing that is NOT hidden: every drive here is CMR-verified. Shingled drives are excluded from this ranking entirely, and so are drives whose recording technology we could not confirm. That exclusion is why a few cheap listings you may have seen elsewhere do not appear.
It is a price-and-fitness answer and nothing more. We do not run a test lab, we publish no read or write figures, and there is no claim anywhere on this page that one drive is faster than another. Ranking storage by speed requires measuring it, and anyone who does should tell you how; we would rather rank on what a catalogue can actually observe every few hours.
It also cannot tell you how a manufacturer handles a warranty claim, how loud a drive is in a room you sit in, or whether a particular batch had a bad year. Those are the things a review is for. What this page does that a review cannot is stay correct: it is recomputed when you load it, and the field it beat is printed underneath so you can see the answer being earned rather than asserted.
This page gives one answer. If you want the full catalogue rather than a verdict, these are the pages that carry it:
Every 1TB drive we track · Every verdict we publish · Where prices are heading · CMR/SMR list
Seagate BarraCuda 1TB ST1000DM010, at $99.99 ($99.99/TB). That is the lowest cost per terabyte among the 3 listings that meet the criteria on this page, read from our catalogue at the moment you loaded it. It is a price-and-fitness verdict rather than a performance one - we run no test lab and this page makes no speed claim about any drive.
We log the winner every time it changes and show the last three above. This page has only just started tracking, so there is nothing to show yet - and we would rather say that than imply a history we do not have. Check back and the log will fill itself.
Because the criterion is cost per terabyte, not brand reputation, and it is printed on this page precisely so you can disagree with it. Every drive in the field passes a brand gate - we will not name an unrecognised seller as an answer - but among drives that pass, the cheapest terabyte wins. If you value a specific manufacturer's warranty handling or a particular product line, the full field below is ranked and you can pick a different row with the trade-off visible.
No, and this is the most important limitation on the page. We do not benchmark drives, we do not publish read or write figures, and nothing here claims one drive is faster than another. What we can measure is price, availability, capacity, interface and recording technology, so the verdict is built from those. Anyone ranking drives by speed should tell you how they measured; we would rather rank on what we can actually observe.
How much weight the verdict carries. 3 listings meet the criteria right now. That is a thin field, and you should weigh the verdict accordingly: with this few listings, one seller changing a price changes the answer.