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Written by Olin Coles   
Wednesday, 05 September 2012
Table of Contents: Page Index
ADATA XPG SX900 Solid State Drive
Closer Look: ADATA XPG SX900 SSD
Features and Specifications
SSD Testing Methodology
AS-SSD Benchmark
ATTO Disk Benchmark
CrystalDiskMark 3.0 Tests
Iometer IOPS Performance
EVEREST Disk Benchmark
PCMark Vantage HDD Tests
ADATA XPG SX900 SSD Conclusion

Iometer IOPS Performance

Iometer is an I/O subsystem measurement and characterization tool for single and clustered systems. Iometer does for a computer's I/O subsystem what a dynamometer does for an engine: it measures performance under a controlled load. Iometer was originally developed by the Intel Corporation and formerly known as "Galileo". Intel has discontinued work on Iometer, and has gifted it to the Open Source Development Lab (OSDL). There is currently a new version of Iometer in beta form, which adds several new test dimensions for SSDs.

Iometer is both a workload generator (that is, it performs I/O operations in order to stress the system) and a measurement tool (that is, it examines and records the performance of its I/O operations and their impact on the system). It can be configured to emulate the disk or network I/O load of any program or benchmark, or can be used to generate entirely synthetic I/O loads. It can generate and measure loads on single or multiple (networked) systems.

To measure random I/O response time as well as total I/O's per second, Iometer is set to use 4KB file size chunks over a 100% random sequential distribution at a queue depth of 32 outstanding I/O's per target. The tests are given a 50% read and 50% write distribution. While this pattern may not match traditional 'server' or 'workstation' profiles, it illustrates a single point of reference relative to our product field.

All of our SSD tests used Iometer 1.1.0 (build 08-Nov-2010) by Intel Corporation to measure IOPS performance, using a SandForce-created QD30 configuration: 4KB 100 Random 50-50 Read and Write.icf. The chart below illustrates combined random read and write IOPS over a 120-second Iometer test phase, where highest I/O total is preferred:

Iometer_Random_4K-IOPS_30QD_Results.png

In our Iometer tests, which are configured to use 32 outstanding I/O's per target and random 50/50 read/write distribution, SandForce SSDs generally outperform the competition when tested with this large queue depth. Ultra high-end PCI-Express SSDs top our results, while the OCZ Vertex 4 SSD delivered the best combined IOPS performance we've seen from any SATA-based SSD with 83,494. The 240GB OCZ Vertex 3 Max IOPS Edition trails behind with 83,117 IOPS, while the Intel SSD 520 Series produced 80,433 peak combined IOPS. This 256GB ADATA XPG SX900 kept pace with the leaders, delivering 79,820 combined IOPS. All of our top performers deliver I/O far beyond the needs of multi-tasking power users and hardcore gamers, and would be ideal for systems running several virtual machines.

In our next section, we test linear read and write bandwidth performance and compare its speed against several other top storage products using EVEREST Disk Benchmark. Benchmark Reviews feels that linear tests are excellent for rating SSDs, however HDDs are put at a disadvantage with these tests whenever capacity is high.



 

Comments 

 
# RE: ADATA XPG SX900 Solid State DriveServando Silva 2012-09-06 22:30
I'm using a pair of SX900 on RAID 0 mode with my P8Z77-I Deluxe and it's a total pleasure.
Maximum Read for seq. files is around 1,100 MB. I couldn't be happier. Before those, I had an Agility 2, and before Intel X-25M, G Skill Phoenix Pro and OCZ Agility 1.

Thank you for the review, Olin.
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# RE: ADATA XPG SX900 Solid State DriveDavid Ramsey 2012-09-10 12:24
Holy crap! Newegg's selling the 512G version for $339!
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# Eggzactly!RealNeil 2012-09-11 07:01
They do have some outstanding sales at the Egg, but that's usually ~after~ I've spent all of my monthly mad money.
I have an ADATA 120GB SATA-II SSD on my old i7-870 Lynnfield system that is still damn fast. I've had no problems with it and have been using it for a long time. The price was good when I bought it too.
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# RE: ADATA XPG SX900 Solid State Drivev1ewr 2012-09-12 01:43
Why doesn't anybody test the Mushkin Chronos 240GB SSD [MKNSSDCR240GB] to compare the others with?
Maybe because it rates as high or higher than most SSDs of same capacity? ;-) And it's also cheaper than most:
##newegg.com/Product/Product.aspx?Item=N82E16820226237
I got 2 of these, and I'm very happy with their performance.
CrystalDiskMark: 508, 238, 463, 223, 35, 17, 128, 57
AS SSD Benchmark: 516, 236, 22, 17, 125, 41, score 380
Testbed PC [relevant parts]:
CPU: Intel i7-3960X @ 4.2GHz
Mobo: Gigabyte GA-X79-UD3 liquid cooled
RAM: 16GB Corsair Vengeance 1866 CMZ16GX3M4X1866C9R XMP Profile 1
AHCI enabled in BIOS.

HTH [hope this helps]
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# RE: RE: ADATA XPG SX900 Solid State DriveDavid Ramsey 2012-09-12 07:41
Probably because Mushkin hasn't sent out any review samples.
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# RE: RE: ADATA XPG SX900 Solid State DriveOlin Coles 2012-09-12 07:42
Good to hear you found a bargain on SSDs in the Mushkin Chronos series. Unfortunately, Mushkin's marketing team is given very few product samples, and they only ship them to sites that give favorable reviews. We're not on the top of their list.
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# Raid 6mikeinnyc 2012-09-12 20:23
Read - 791 mb/s Write - 813.2 mb/s in Raid 6 Configuration(Don't use 0)

I have a SuperComputer(micro) Intel E7-8860 with 4 CPUS. I needed faster speeds for my VMs. In the VM world spindles are garbarge even in raid 0. Multitasking and opening up 10 in a row is now no problem. Easily detected in BIOS and configured 123 with external backup.

I use 10 VMs for algo development and replication of results in D:\ drive.

Smoked my OCZ Vertex 3 Badly which is fast and is my C drive... for now.

Note: install SSD with proper harddrive casing (if Raid)otherwise the 3 1/2" casing won't fit. Holes are off by 2cm. It will work in regular computer not in enterprise. The SSD were an exact fit of my Raptors so I was able to install it in hdcasing no problem. So far so good. All 5 drives tested ok. Also this is my first Adata purchase... never heard of them but I guess you all will. Fastttttttt.
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# I need this!!!Anthony Moore 2012-09-18 14:48
Starcraft 2, Diablo 3, Borderlands 3...They take up a lot of space. I need one of these badly!
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