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Written by Olin Coles   
Tuesday, 01 February 2011
Table of Contents: Page Index
Mushkin Callisto Deluxe Solid State Drive
Features and Specifications
Closer Look: Mushkin Callisto Deluxe
SandForce SF-1200 SSD Controller
SSD Testing Methodology
AS-SSD Benchmark
ATTO Disk Benchmark
CrystalDiskMark 3.0 Tests
Iometer IOPS Performance
EVEREST Disk Benchmark
HDD vs Hybrid Drive vs SSD
Mushkin Callisto Deluxe Conclusion

HDD vs Hybrid Drive vs SSD

It's been the same argument for over two years now: SSDs offer the best performance, but HDDs still offer the best capacity and price. Now that Solid State Hybrid drives are available, that argument changes. While the optimal blend of bandwidth speed, operational performance, storage capacity, and value has yet to be delivered, products like the Seagate Momentus-XT offer an ultra-affordable start in the right direction Installed as a primary drive for notebook and value-conscious enthusiasts, the Solid State Hybrid Drive delivers up high-capacity storage space while starting Windows and opening programs like a SSD.

The last days of old technology are always better than the first days of new technology. Never has this saying been more true than with the topic of storage technology, specifically in regard to the introduction of Solid State Drive technology a few years ago. The only things standing in the way of widespread Solid State Drive (SSD) adoption are high storage capacity and affordable price of Hard Disk Drive (HDD) devices. Because NAND flash-based SSD technology costs more per gigabyte of capacity than traditional magnetic hard drives, the benefits of immediate response time, transfer speeds, and operational input/output performance often get overlooked. Like most consumer products, it wasn't a question of how much improvement was evident in the new technology, it was price. I'll discuss product costs more in just a moment, but for now consider how each new series of SSD product employs greater performance than the one before it, convincing would-be consumers into waiting for the right time to buy.

There's also a gray area surrounding SSD performance benchmarks that has me concerned. You might not know this, but SSDs can be very temperamental towards the condition of their flash NAND. My experience testing dozens of Solid State Drives is that a freshly cleaned device (using an alignment tool) will always outperform the same device once it's been formatted and used. A perfect example are Indilinx Barefoot-based SSDs, which suffers severely degraded performance when writing to 'dirty' flash NAND. The reason that all of this will matter is simple: the performance results reported to consumers in product reviews (such as this one) often report the very best performance scores, and the process used to obtain these results is not applicable to real-world usage. This is where garbage collection techniques such as TRIM become important, so that end-users will experience the same performance levels as we do in our tests.

Manufacturer Indilinx Intel JMicron Samsung Toshiba SandForce Marvell
Controller IDX110M00-FC PC29AS21AA0 JMF612 S3C29RBB01-YK40 T6UG1XBG SandForce SF-1200 88SS9174-BJP2
Max Cache 64MB 16MB 128KB+256MB 128MB 128MB Integrated 128MB
Max Capacity 256GB 160GB 256GB 256GB 512GB 512GB 256GB
Read/Write Speed 230/170 MBps 250/70 MBps 250/200 MBps 220/200 MBps 230/180 MBps 260/260 MBps 355/215 MBps
Interface SATA-II 3-Gbps SATA-II 3-Gbps SATA-II 3-Gbps SATA-II 3-Gbps SATA-II 3-Gbps SATA-II 3-Gbps SATA-III 6-Gbps
Garbage Collection GC/TRIM None TRIM GC/TRIM GC/TRIM GC/TRIM GC/TRIM

Chart By:

BmR

Garbage Collection (GC) is the current solution for keeping flash NAND in 'clean' condition, while maintaining optimal performance. Windows 7 offers native TRIM support, and most retail SSDs also include this special GC function or at least offer a firmware update that brings the drive up-to-date. For anyone using an Operating System or SSD that does not offer Garbage Collection functionality, you'll be using 'dirty' flash NAND modules and suffering sub-optimal performance for each write-to request. A few SSD manufacturers offers free tools to help restore peak-level performance by scheduling GC to 'clean' used NAND sectors, but these tools add excessive wear to the NAND the same way disk defragmenting tools would. SLC flash modules may resist wear much better than MLC counterparts, but come at the expense of increased production cost. The best solution is a more durable NAND module that offers long-lasting SLC benefits at the cost of MLC construction. Adoption is further stalled because keen consumers aware of this dilemma further continue their delay into the SSD market.

Getting back to price, the changes in cost per gigabyte have come as often as changes to the technology itself. At their inception, high-performance models such the 32GB MemoRight GT cost $33 per gigabyte while the entry-level 32GB Mtron MOBI 3000 sold for $14 per gigabyte. While an enjoyable decline in NAND component costs forced consumer SSD prices down low in 2009, the price of SSD products has been on the rise during 2010. Nevertheless, Solid State Drives continue to fill store shelves despite price or capacity, and there are a few SSD products now priced dangerously close to the $0.79 per gigabyte for the WD VelociRaptor hard drive. Despite being less expensive, the cost of SSDs may still price some budget buyers out of the market. Sales prices notwithstanding, the future is in SSD technology - or possibly a high-capacity SSD hybrid - and the day when HDDs are obsolete is nearing close.



 

Comments 

 
# RE: Muskin Callisto Deluxe Solid State DriveRobert17 2011-02-01 23:37
Well thanks again Olin. Nice review. The more SSDs you test, the more crowded the competition becomes to the advantage of the end user. All is well in the SSD-verse. (PS, forgot the site, but I did see a "sale" item on an SSD, 64Gb @ $84 last week. $$ Looking better all the time.)
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# Waiting,.......RealNeil 2011-02-02 07:06
Good look at SSD's. Thanks for your time and effort putting this all together Olin. I'll refer back to this info when I'm ready to buy more of these drives. I'm still waiting for SSD Prices to come down a little more. I only have one of them, an OCZ Agility-2 that is seriously fast, but I can't afford to put one in the other computers yet.

Maybe SSD makers could learn a lesson from Amazon, whereby they lowered the prices of their Kindle Readers and then had the very best sales and profits that they have ever recorded in the last quarter of 2010.
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# Garbage collection (of words)Ron 2011-02-02 16:58
I would re-check your facts about GC being as bad as defragging aN SSD drive. Yes, it will add some extra wear, but this would be nothing on the order of a full defrag. When these drives are used in a situation where TRIM is not available, then GC is the only solution available. I am very wary of their speeds when in a "dirty" state, and how a normal home desktop user would really be affected. I think cheap Slow long lasting SSD would be great(direct competitor to hard drive) simply for the Noise, power and space requirements. £/GB equality.
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