Compare the Best External Hard DrivesJanuary 2020

External hard drives are portable and used to backup files and data from your computer, so they’re safeguarded in case of accident or for retrieval at a later date. While Cloud-based backups are being used more and more for backups, external hard drives still have several important benefits compared to online backups:

Capacity

The main important consideration when choosing an external hard drive is the capacity. This Is a measure of how much data the drive can hold, and is measured in gigabytes (Gb) or terrabytes (Tb) . A gigabyte is 1000 megabytes, and a terabyte is 1000 gigabytes. Our drives range from relatively small portable 120gig drives to enormous 5Tb drives, which can safely hold all the data from multiple machines at once. Generally speaking the higher the capacity the better, but it does depend on what you’re going to be backing up. If you only use your computer to store documents, low-res photos and the like, a 2-500 gig drive should be enough. On the other hand, large capacity drives are useful for storing RAW photos, video editing or Photoshop files.

Size & Portability

Hand in hand with the capacity of the drive is its size. Generally speaking, the larger the capacity of a drive, the bigger it is. Small-capacity drives are extremely portable, being no larger than a mobile phone, so can be transported very easily. On the other end of the scale, the very large capacity drives are not meant to be portable, and usually sit in or under your desk as a safe deposit for all your data. Portability and weight will only become a real issue when choosing the very high-capacity drives, but it is worth paying attention to if you plan on transporting the drive frequently.

Read/Write Speeds

Read & write speeds measure how quickly data can be written from & to the external hard drive. This is measures in bytes per second - the higher the speed, the faster large files (such as movies) will be transferred onto or from the drive. The read-write speeds are also affected by the USB version supported - USB 3.0 supported drives allow far higher transfer rates than USB 2 drives, so it is worth seeking out the newest drive you can for the fastest data transfer speeds.

Power

On the subject of USBs, external hard drives are powered by 2 main methods: via USB or externally power lead. Smaller drives will be powered via USB - this means that the same lead that transfers the data also powers the device. This means no battery, no extra leads, and they are far more portable. Larger drives may be so big and powerful that USB alone can’t provide enough power - in which case they may need an external power connection to properly function. This means that extra consideration has to be made for a spare power socket and the required leads - making them less use when on the go.

Extras

Finally, there are a wealth of extras that can be found in more advanced models of external hard drives. Some of these may only be useful in specific situations, and you will usually pay more for them, but the utility may well be worth the extra cost. Some examples of extra features include:

External Hard Drive Prices

In total we found 179 external harddisk ranging from $39 to $702. The average price of a new external hard drive is $147 and the 80% of external harddisk are priced between $57 and $330. The Seagate Ultra Slim - 1Tb is the cheapest external hard drive at only $40, and ioSafe SoloPRO - 3Tb is the most expensive at $702.

External Hard Drive Brands - Price Range

The highest average external hard drive price out of all brands is ioSafe external hard disks with an average price of $502. ioSafe external hard disks start at $390 and their most expensive external hard drive costs $702.

DataLocker external hard drives range in price from $394 to $562, and the average price of DataLocker external hard drives is $478 which is the second highest average price of all external hard drive brands.

The third highest average external hard drive price out of all brands is Glyph external harddisks with an average price of $322. Glyph external harddisks range in price from $120 to $500.

External Hard Drive Brands - Average Ratings

We have checked 266 expert reviews and 1,642 user reviews for external harddisk and used these reviews to determine the average rating for each brand of external hard drive. The top three external hard drive brands are Western Digital, Seagate and Buffalo. Western Digital has an average rating of 87%, Seagate has an average rating of 76% and Buffalo has an average rating of 75%.

Biggest External Hard Drive Retailers

We found 66 current offers for external hard disk from eBay making it the biggest external hard drive retailer. That is significantly bigger than the second biggest retailer, Adorama for whom we found 54 current offers for external hard disk. The third biggest retailer is Overstock with 40 current external hard drive offers.

When Are Most New External Harddisk Released?

We couldn't see any noticeable pattern in the release dates for new external hard disk drive over the last 3 years. Last year most new external hard drive were released in February, with seven new external hard drive released that month. In June 2018, 59 new external hard disks were released making it the biggest month that year for new external hard drive releases. July was the biggest month in 2017 for new external hard disk drive, with 36 new external hard disk drive released that month.

How Fast Do External Hard Drive Prices Drop After Release?

On average, in the first 6 months after release, external hard disk drive drop in price by 1%.

A typical new external hard drive costs on average $147. By waiting 6 months before buying you could save on average $2.

Weights

'Weight' denotes the weight of the external hard drive, measured in grams (g).

Comparing all external harddisks, the weights range from 41g to 11.4kg. The weights of most external hard drives range from 0g to 300g. The external hard drive with the heaviest weight is the ioSafe Solo G3 - 4Tb, which is a 6.8kg external hard drive and sells for $390.18. The Seagate STGD2000400, which sells for $63.33, has the lightest weight and is a 100g external hard drive.

USB Powered

Whether the hard drive is powered by USB or not.

Of the 851 new external hard drives currently listed on Kagoo, the vast majority are USB powered external hard drives. 680 external hard drives (80%) are USB powered external hard drives.

Hard Drive Capacities

'Hard Drive Capacity' denotes how much data the hard drive can hold, measured in gigabytes (GB).

The hard drive capacities of external hard disk drives range from 1GB to 64TB. The hard drive capacities of most external hard disk range from 0GB to 1.5TB. The G-Technology G-Raid - 12Tb, which currently retails for $649.00, has the biggest hard drive capacity and is a 12TB external hard drive. The external hard drive with the smallest hard drive capacity is the Fantom Drives GForce3 Pro 500GB, which is a 500GB external hard drive and is on sale for $59.96.

Which Are the Cheapest Retailers for External Hard Drives?

The chart below helps you decide which retailer is normally cheapest for buying external hard drives. For each retailer it shows the total number of external hard drives where they currently have a market leading price. The chart below helps you decide which retailer is normally cheapest for buying external hard disks. For each retailer we took all of their prices and looked at what proportion of those prices where the cheapest on the market. The cheapest retailer that we found was eBay. 50 of their external hard drive prices were the cheapest that could be found anywhere.

Proportion of External Hard Drives for Which Each Retailer is Cheapest?

Assessing how cheap each retailer is for external harddisks by counting the number of cheapest prices for that retailer, makes the retailers that offer the greatest number of external hard drive prices more likely to offer the greatest number of cheapest prices. The chart below considers the proportion of each retailer's external hard drive prices that are the cheapest compared to other retailers. The cheapest retailer that we found using this approach was eBay. 75.8% of their external hard drive prices were the cheapest that could be found anywhere.