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2TB Seagate Barracuda XT is first SATA 6Gbps HDD

Gordon Kelly


2TB Seagate Barracuda XT is first SATA 6Gbps HDD

We may have seen the future of home storage, but the more realistic present is still highly tempting...

Today Seagate shows there is still life in the moving parts sector with the announcement of the 'Barracuda XT', the first HDD to support the new SATA 6Gbps standard. The desktop focused XT will come in capacities up to two terabytes, contains 4x 500GB platters, spins at 7,200rpm and has a hefty 64MB of cache.

As for the performance, the XT delivers breakthrough speeds for an HDD with Seagate quoting a sustained data transfer rate of 140MB/sec. On the flip side, this actually falls well within the bandwidth of SATA II (300MB/sec) and certainly doesn't trouble SATA 6Gbps (600MB/sec). The new standard is backwards compatible with SATA (130MB/sec) and SATA II, so you won't need a new motherboard to snap one up.

Speaking of which, Seagate is expected to launch the Barracuda XT line this month with the 2TB edition retailing for approximately $299 (£185). This isn't a huge premium on SATA II drives, then again given compatibility here is more of a technicality at this point it probably shouldn't be.


Press Release


September 21, 2009, 6:01 pm

if you get a sustained transfer of anything like 140 on a sata 2 interface,ill get one yesterday.


September 21, 2009, 8:54 pm

It's just as well really, considering the implementation problems SATA3 is currently having:



September 21, 2009, 9:18 pm

Any news on an external version?

Geoff Richards

September 21, 2009, 9:51 pm

@GoldenGuy - not yet, but I'm sure they will follow. Afterall, capacity is neutral of interface. This story proves they have the tech to do 4 x 500GB platters so there's no reason why they won't extend the existing FreeAgent Xtreme family to 2TB; they already do 1.5TB for about £150.

I suppose there's a chance it might come as 6Gbps eSATA - I read a quote from back in March 2009 where Seagate claim it's coming - but this announcement is for internal SATA 6Gbps. They could always do a 3Gb/sec eSATA / USB 2.0 version in 2TB very easily.


September 21, 2009, 11:01 pm

I'd like to see how this compares with the new WD Black Caviar 2TB drive... I'll be looking for a new hard drive to install Windows 7 to when it comes around, and quite fancy a fast disk.

Oliver Levett

September 22, 2009, 12:12 am

I'm just wondering why this is any better than anything we've got now? I recently snapped up 2 750GB HDDs with SATA2, and have them in a RAID0 setup. This cost me £80, and adding another 2 drives would get it to 3TB and probably faster read/write times anyway. That will still come in at less than a single 2TB drive!


September 22, 2009, 3:22 am

@Oliver Levett

It will be better than one of your 750GB HDDs, but not because of the new SATA interface - it'll be faster thanks to the 500GB platters. I'm assuming that you're 750GB drives have at least 2, possibly 3 platters, so the data density will be lower, hence the read/write head will have to cover more ground to read the same amount of data.

Your RAID 0 setup changes things though... and will probably make it slightly faster than a single drive. Saying that, I always go for data security rather than performance... each to their own I guess.

Also, 4 platters does add to power consumption - 3 seems to be the sweet spot for performance/space if Samsungs past offerings are to go by


September 26, 2009, 2:30 am

I'll not buy any 2TB HDD till prices didn't reach £100. It's gonna be soon :)

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