Seagate Momentus XT hybrid hard drive

Seagate Momentus XT hybrid hard drive review 

Earlier this year, Seagate promised to flip the 2.5-inch HDD industry upside-down, but it wouldn't do so by using an SSD in sheep's clothing. Rather, it'd be doling out a new breed of hard drive, one that actually has a pinch of pure, unadulterated NAND inside for picking up the pace in certain scenarios. The idea of a hybrid hard drive isn't totally new, but the Momentous XT is one of the first hybrid HDDs to actually make it out of the lab and into the hands of consumers. The most intriguing aspect of the drive is the price -- at around $130, it's just under half as pricey as Seagate's conventional 500GB Momentous 7200.4. That uptick in price isn't anything, but it is still far less than what you'd pay for a 2.5-inch SSD with half the capacity. We've already shown you the benchmarks, so we figured we'd slap this bad boy in our main rig for a few weeks to see if we actually noticed any real-world performance increases to justify the cost. Head on past the break for our two pennies.

The Momentous XT is a curious beast. It actually doesn't reveal its true colors when taxed in standard benchmarks, which makes a longer-term, real-world evaluation of it that much more important. You see, this 500 gagger actually has 4GB of NAND onboard, but given just how small 4GB is in relation to the other 496GB, the drive obviously has to be extra choosy when determining what goes where. Standard benchmarks will prove that a straight-up read / write on this drive is similar to any other 7,200RPM drive of this caliber. Frankly, there are no real gains if you're using the drive to shuffle 30GB files from server to server each day. The whole point of this drive is to make "the little things" snappier in everyday use for the Average Joe / Jane, largely by evaluating what applications consumers use most and then dedicating the NAND for those high-use apps.
Needless to say, there's not really a great benchmark tool out for that kind of work. This all sounds fine and dandy in theory, but the real question is how it acts in practice. We swapped our standard 7,200RPM drive (also 500GB) out for this unit, cloning the contents along the way. Upon boot, we noticed a 1 - 2 second improvement in how long it took to show us a useable desktop; hardly Earth-shattering, but a decent start. From there, we fired up Firefox, Photoshop CS5, Sketch, Tweet Deck and iTunes in succession. Again, a 1-2 second improvement in total load time. But after using the apps for a bit, we shut our machine down and rebooted, doing the same song and dance all over again. And again. And again. We went through this process four total times, with each one getting a bit quicker when it came to load time. After we'd given it ample opportunity to grasp our preferred flow, we noticed a 6 - 8 second improvement in total load time. That may not sound like a lot, but percentage wise it's hardly worth sneezing at.

So, if booting up apps was quicker, how's about the actual in-app performance? We used Light room two as our main test bench here, selecting 300 RAW files and waiting as graphical representations of the color balance lit up in the corner. The difference here was striking. On the prior drive, it took a few seconds per image to display graphical elements about any given image; on the Momentous XT, they popped up instantly. One area where we didn't see such a huge increase in performance was during renders; we exported a 32GB iMovie project into a .move file for easier transport, and the total time for the task to complete was essentially the same on both drives. Granted, we fully expected this type of behavior, but it goes to show that 4GB of NAND won't exactly alter your universe when looking at chores that require lengthy reads and writes.