Counting the cost
The v4 SSD is built around a 9.5mm format – so it might not fit in the more svelte notebooks out there – and Crucial backs it up with a three year warranty. The range is made up of four capacities; 32, 64, 128 and the flagship 256GB drive with quoted Sequential Read performance for the family of 230MB/s. The 32GB drive makes do with just 200MB/s Read and the Write performance is a lowly 60MB/s. The 64GB drive has a quoted Write speed of 100MB/s, the 128GB 175MB/s and the 256GB unit 190MB/s.
Micron NAND chips and a Phison controller
At the heart of the drive isn’t the usual Marvell or LSI SandForce controller but the less well known PS3105 from Phison. This is the same controller found in the earlier Patriot Torqx 2, Corsair Nova 2 and the Zalman P series of drives. For storage, the v4 relies on Micron 25nm synchronous NAND.
ATTO and AS SSD results
The quoted sequential Read/Write performance for the 256GB model is a little on the conservative side compared to what I achieved when using the ATTO benchmark, which produced figures of 276MB/s for Reads and 235MB/s for the Writes. This may appear rather pedestrian compared to the latest 6Gb/s interfaced drives, but these are good results for a 3Gb/s SSD. Unlike the SandForce controller, the Phison PS3105 doesn’t have much of a problem dealing with compressible data, as can be seen from the two CrystalDisk benchmark scores.
CrystalDiskMark results: compressible data scores on right
Given that Crucial is positioning the v4 as a replacement to a hard disk drive in a 3Gb/s system, just how does it compare? Naturally, the v4 is much faster booting up than a conventional HDD – it took 20secs to boot into Windows 7 compared with the 42secs of a standard drive – in this case a 320GB Seagate HDD.
Low cost alternative? In concept only, it would seem
Copying a 10GB folder of mixed file types and sizes took a mere 2mins 7 seconds with the v4 compared to the standard drives time of 6 minutes. A large 4GB image file took just under 3 minutes to copy using the standard HDD which seems a lifetime compared to the 47 seconds the v4 took. No complaints there then.
Unfortunately for Crucial, the v4 has been launched into seriously competitive and fast moving market where prices are seemingly dropping on a weekly basis, even in the larger capacities. Even though it's unashamedly promoted as a 3Gb/s SSD, its performance is overshadowed by the 6Gb/s drives that, even in Crucial's own camp, are very close to the v4's price point. ®
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Ten... Sata 3
Crucial v4 256GB budget SSD review
Surely SSD purchasing goes like this:
Buy Samsung 830 256GB, job done..
Will wait for the price to drop
So if I'm reading this correctly Crucial has used some older, slower components to build a low cost drive - but then slapped a retail price on it that's not low at all? I've seen SATA3 256G drives of various makes in the 115 pound range recently.
Moving to an SSD was the best decision I ever made for my desktop machine. But I have a few older laptops that would definitely benefit from a sub-100 quid, 256GB SATA2 SSD.
Hopefully demand for this model will be sluggish, and will result in rapid price erosion; at which point I would be happy to buy it.
One quick question. A while back I saw a hybrid disc - with spinning platters but a small SSD to act as a "huge cache". It was from ebuyer, I think, but I can't remember the details. It struck me as a great compromise because it delivered (I think) 500GB of storage, but performance that would be about the same as a SATA2 drive like this.
Oddly I haven't really seen it advertised since, and I'm wondering why.
Re: 6Gb SATA drives
Next to none. Raw MBps speed means very little in day to day usage with SSDs.
Its all in the access times.
I've been running a Samsung 830 SATA III SSD in a old 2006 spec SATA I equipped laptop.
The old laptops controller only manages to push 115MBps when the SSD should be able to push nearly 4 times that. However, in actual use it still boots WIndows 8 in 12 seconds to the desktop and apps all open instantly.
I've tried all sorts of combos of SATA I/II/III controllers and SATA II/III SSD drives and the day to day usage pattern is pretty much the same across the board.
Don't worry about it. Just do it.
Re: Will wait for the price to drop
Seagate Momentus XT (The XT is important as Momentus is the range name for the vanilla 7200RPM disks)
There are 2 models, a 3Gb/s 500GB Drive with 4GB of SLC flash and a 6Gb/s 750GB Drive with 8GB of SLC Flash
Doesn't this device fall foul of the Rectangles With Rounded Corners patent?