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SanDisk Extreme 2 240GB SSD Review

AkG

Well-known member
Joined
Oct 24, 2007
Messages
5,270
SATA 2 Performance

SATA 2 Performance


In a perfect world everyone investing in a new solid state drive would have access to a SATA 6GB/s controller which could pass on the TRIM command. In reality not everyone has this and for many the decision comes down either giving up TRIM – never a good idea with most controllers – and running it off a secondary controller; or taking a performance hit and running in SATA 2.0 mode.

These tests will consist of some of our real world and synthetic benchmarks run on our standard 1155 test-bed; but the drive will be attached to an SATA 2 port.

For synthetic we have opted for the newcomer to our charts: Anvil Storage Utilities Pro. For real world we have opted for our Adobe test. These two tests should give you a very good idea of the level of performance impact you can expect from running a modern SATA 6 drive in compatibility mode.


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We doubt many will ever use this drive in SATA 2 environments, but these results are still right up there with some of the best we've seen. The onboard pseudo-SLC mode portion of the NAND still boosts performance beyond what we have come to expect from Marvell and this is easily one of the best Marvell Monet controller-based drives available on the market.
 
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AkG

Well-known member
Joined
Oct 24, 2007
Messages
5,270
Conclusion

Conclusion


SanDisk may be onto something here. While their competitors have been hell-bent on pushing the boundaries regardless of end-user cost, the Extreme 2 240GB charts a slightly different path by utilizing advanced yet proven technology and pairing that up with a relatively affordable cost. Simply put, this is easily the best, most well rounded SSD SanDisk has ever produced.

While the Corsairs and OCZ of this world already had products in the Extreme 2’s performance bracket, SanDisk is one of the first to offer eX2 ABL NAND alongside Marvell’s Monet controller. The end result is an SSD which is highly adaptable to nearly any situation and retains its performance even as capacity reaches higher levels. In a single drive, you get the best of Toggle Mode’s small fine performance alongside ONFi 2 NAND’s sequential file throughput. More importantly, the Extreme 2 240GB outperforms its predecessor by a significant amount, offering true inter-generational benefits.

By dramatically increasing the amount of NAND set aside for nCache – or pseudo-SLC mode – the Extreme 2 gains a noticeable increase in performance as well. This not only lets the drive excel in empty drive performance tests but also allows it to outperform a lot of higher priced alternatives without sacrificing the lower power consumption abilities typified by SSDs equipped with eight NAND ICs.

With all that being said the Extreme 2 is not without its minor flaws. It is hard to argue with its results, but if SanDisk wants to use this drive as demonstrator model for what their fancy new 19nm eX2 ABL NAND can really do, maximizing the number of channels (16 in this case) may have benefitted overall performance. In addition, the Extreme 2 doesn’t hit the same price / performance level its predecessor did when it was first released since its price point is ridiculously cluttered with alternatives.

While SanDisk hasn’t accomplished anything particularly ground breaking with the Extreme 2, they have successfully combined a number of technologies to create on hell of an SSD.

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