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ASUS ROG RAIDR Express 240GB PCIe SSD Review - Benchmarks - Test System Setup and ATTO Baseline Performance

By: Chris Ramseyer | PCIe in Storage | Posted: Dec 6, 2013 3:04 pm
TweakTown Rating: 90%Manufacturer: ASUS

Desktop Test System





ATTO Baseline Performance


Version and / or Patch Used: 2.34


ATTO is a timeless benchmark used to provide manufactures with data used market storage products.




ASUS asked us to show ATTO at QD10 (shown below), but we still needed to show our standard QD4 test, the default for ATTO. The maximum sequential read speed in our ATTO test was nearly 830 MB/s. Very impressive. The maximum sequential write speed was nearly 825 MB/s.




At QD10, the maximum performance decreased slightly, but lower block size increased throughput significantly.

Page 5 [Benchmarks - Sequential Performance]


HD Tune Pro


Version and / or Patch Used: 4.00

Developer Homepage:

Product Homepage:


HD Tune is a Hard Disk utility which has the following functions:


Benchmark: measures the performance

Info: shows detailed information

Health: checks the health status by using SMART

Error Scan: scans the surface for errors

Temperature display


HD Tune Pro gives us accurate read, write, and access time results, and for the last couple of years has gained popularity amongst reviewers. It is now considered a must-have application for storage device testing.





RAID is a tradeoff, but one the users can make in the end. By changing the stripe size, an array can work better with sequential data, or with random data. For consumer workloads, finding the right balance is the key. From the factory, the ASUS ROG RAIDR Express comes with a stripe size of 64K. Looking at the configuration in the Marvell utility, we discovered this RAID controller can also be configured for a 32K stripe size. 32K may be a little better for desktop use since Intel recommends 16K for PCH RAID 0.


Setting a controller up for higher sequential performance leaves a void down low in the random department. Either way, with RAID, you also need high queue depths to reach maximum performance, even with sequential reads and writes. In the chart above, we see a single queue read across the drive. The maximum read speed of the ROG RAIDR is faster than the 2.5" drives on the chart. The average speed is nearly 415 MB/s




The QD1 write across the drive, produced an average write speed of 423 MB/s. This is faster than many of the new low-cost drives like the 840 EVO and M500. It's even faster than the new Vector 150 240GB.


HD Tach - Sequential Write Performance after Random Writes




Here, we see sequential read and write performance at 128KB after a number of random writes to the drive.

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