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Written by Olin Coles   
Thursday, 26 March 2009
Table of Contents: Page Index
ACARD ANS-9010 DDR2 SATA RAM-Drive
Features and Specifications
First Look: ACARD ANS-9010
ACARD ANS-9010 Details
SSD Testing Methodology
Random Access Time Benchmark
Basic IOPS Performance
Linear Bandwidth Speed
Buffered Transaction Speed
Windows XP Startup Times
Solid State Drive Final Thoughts
ACARD ANS-9010 Conclusion

Disclaimer: SSD Testing

Benchmark Reviews recently published an article which details Solid State Drive (SSD) Benchmark Performance Testing. The research and discussion that went into producing that article changed the way we now test SSD products. Our previous perceptions of this technology were lost on one particular difference: the wear leveling algorithm that makes data a moving target. Without conclusive linear bandwidth testing or some other method of total-capacity testing, our previous performance results were rough estimates at best.

It's critically important to understand that no software for the Microsoft Windows platform can accurately measure SSD performance in a comparable fashion. Synthetic benchmark tools such as HD Tach and ATTO Disk Benchmark are helpful indicators, but should not be considered the ultimate determining factor. That factor should be measured in actual user experience of real-world applications. Benchmark Reviews includes both bandwidth benchmarks and application speed tests to present a conclusive measurement of product performance.

SSD Testing Methodology

Solid State Drives have traveled a long winding course to finally get where they are today. Up to this point in technology, there have been several key differences separating Solid State Drives from magnetic rotational Hard Disk Drives. While the DRAM-based buffer size on desktop HDD's has recently reached 32 MB and is ever-increasing, there is still a hefty delay in the initial response time. This is one key area in which flash-based Solid State Drives continually dominates because they lack moving parts to "get up to speed".

However the benefits inherent to SSD's have traditionally fallen off once the throughput begins, even though data reads or writes are executed at a high constant rate whereas the HDD tapers off in performance. This makes the average transaction speed of a SSD comparable to the data burst rate mentioned in HDD tests, albeit usually lower than the HDD's speed.

Comparing a Solid State Disk to a standard Hard Disk Drives is always relative; even if you're comparing the fastest rotational spindle speeds. One is going to be many times faster in response (SSD's), while the other is usually going to have higher throughput bandwidth (HDD's). Additionally, there are certain factors which can effect the results of a test which we do our best to avoid.

Test System

  • Motherboard: Gigabyte GA-EX58-UD4P (Intel X58/ICH10R Chipset) with version F7e BIOS
  • Processor: Intel Core i7-920 BX80601920 2.667 GHz
  • System Memory: 6GB Tri-Channel DDR3
  • Operating System: Windows XP Professional SP-3 (optimized to 16 processes at idle)

Drive Hardware

Test Tools

  • EVEREST Ultimate Edition v5.00.1650 by Lavalys: Disk Benchmark component tests linear read and write bandwidth speed
  • ATTO Disk Benchmark v2.34: Spot-tests static file size chunks for IOPS benchmarking
  • HD Tach RW v3.0.4.0 by Simpli Software: Approximate buffered read and write bandwidth speed
  • PCMark05 by Futurmark Corporation: Synthetic measurement of real-world productivity
  • System Speed Test v4.78 by Vladimir Afanasiev: Accurately measures random access response time



 

Comments 

 
# RE: ACARD ANS-9010 DDR2 SATA RAM-DriveJeddo 2010-03-12 16:11
Why bother with a hardware device that uses RAM modules at such low speeds? I mean, 500 MB/s may be fast for anything plugged into a SATA socket, but with modern consumer motherboards accomodating 16 GB RAM, take half of that for a RAMdrive and you'll be far better off in terms of raw performance. I measured approx. 2 GB/s on a 1 GB RAMdrive; system: Athlon 64 x2 6000+, 2 GB DDR2, XP SP3. And if 4 RAM sockets are not enough, I'm sure Tyan can meet your needs.
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# RE: RE: ACARD ANS-9010 DDR2 SATA RAM-DriveDennis 2010-06-12 19:18
There is a definite niche market for this product. If you have a 32-bit OS like WinXP (and are forced to use this), and run a memory hungry app like PhotoShop, you will need something to help you through the 4GB memory barrier. This handy drive will take care of all you paging file, virtual memory, and temporary drive storage needs. It will provide a strong boost in performance. I'm planning on getting one shortly for use in a corporate environment currently locked to Windows XP 32-bit.
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# Access speed is more important for SSDs.donjoe 2011-01-21 05:31
"the average linear read and write bandwidth [...] I personally consider this the single most important comparison of storage drive products"

You personally have no idea what you're talking about - SSDs are way too expensive per GB to be used mainly for long-term storage, so it makes no sense to talk about them as being anything other than active, system-and-applications or server drives, where the ACCESS SPEED is the key factor, not the linear I/O speed.
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# RE: Access speed is more important for SSDs.Olin Coles 2011-01-21 08:27
How do you take that quote to mean that I endorse SSDs for primary storage? Considering how many SSDs I've personally tested (over fifty), and how many more I've personally deployed on servers and workstations (thirty), I think you might want to reconsider your baseless claim.

What I'm saying here is that linear I/O is more important than the other factors, since SSDs will already inherently deliver faster access speed and transfer bandwidth. In my opinion, measuring input/output operations is more important than measuring speed or response time on an SSD.
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# RE: ACARD ANS-9010 DDR2 SATA RAM-Drivethrakkor 2011-12-28 11:15
I suspect that the main limitation here is the bridge chip. The RAM, even DDR2, has huge speed headroom (proven by mainboard chipsets); the SATA interface may or may not stand in the way of really high transfer speeds, but given that many modern days Flash based SSDs have competitive speeds, the remaining factor is the bridge chip, along with the design of the board. I really expect this kind of device, the RAM based SSD to offer over 300 megabytes / second read and write, easily, no RAID required.
Conclusion: SODIMM DDR3 for improved RAM density (16 slots would be really top), SATA3 interfacing (there aren't even may SATA3 HDDs) and an improved bridging design (even a small dedicated computer of its own would be necessary to handle the huge bandwidth). Since there are many 300 to 400 USD graphic monsters that are used just for games - what a stupid purpose - I don't even blink at spending, say, 500 USD on such a future DDR3 based SSD, and that's before any SODIMM would make its way into the slots. I don't even blink at that price. But, please, 150 MB/s ? Hah... More like 300 - 400, SATA3 or even SAS...
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# RAMhirnaxi karelia 2012-06-12 14:27
hi i want to know about how can i find ram; speed, pins, title, and eles.
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