OCZ Vertex 450 2x128GB RAID

Testing Setup

Test Setup
Case TypeNone
CPUIntel Core i5 2500K
MotherboardAsus P8Z68-V Pro
RamKingston HyperX 1600
CPU CoolerProlimatech Megahalem
Storage Drives
  • OCZ Vertex 450 128GB
  • Seagate 600 SSD Pro 400GB
  • OCZ Vector 256GB
  • OCZ Vertex 4 256GB
  • OCZ Vertex 3 256GB
  • OCZ Vertex 3 Max IOPS 256GB
  • Crucial RealSSD C400 256GB
  • Silicon Power Slim S70 240GB
  • Intel SSD 520 256GB
  • Seagate Momentus XT 750GB
Case Fans120mm Fan cooling the mosfet CPU area
Docking StationsNone
Testing PSUCooler Master UCP 900W
MouseMicrosoft Intellimouse
KeyboardLogitech Keyboard
Gaming Ear BudsNone

We include the result of RAID 0 with stripe size 16KB as that is the default setting for the Intel chipset.




Let’s start with the random read performance. The 128GB Vertex 450 performs decent at queue depth of 1 but as we crank up the queue depth, it falls behind some of the current generation of 256GB drives. RAID 0 does not help much here since the drive is already fast enough and at such low queue depth, you will not benefit much from the second drive.


Desktop workloads will never stress more than a few queue depth but we present the 32 queue depth here to show the performance improvement with RAID 0. As you can see, despite the fact that RAID 0 does not help with the low queue depth performance, it has a major impact at queue depth of 32 where it is able to deliver 50% improvement. None of the single drive can even match the performance of the two drives in RAID.


Having less die per NAND on the 128GB drive lowers its random write performance and as a result it is not able to really compete against the drives with larger storage. RAID 0 helps out a little where we can see that the two drive in RAID 0 yields 50% improvement with queue depth of 1 and four times of the performance with queue depth of 3. It is still unable, however, to match the drives with maximum numbers of NAND channels.


At higher queue depth, we can see that the 240GB drive still yields better performance compare to the two drives in RAID.


The sequential read of the Vertex 450 is on par with the 256GB Vertex 4. One of the biggest improvement that users would be able to notice with RAID 0 of two SSDs would be the sequential read performance where it takes the lead over single drive.


Sequential write unfortunately suffered again due to the reduced NAND dies.



When comes to reading incompressible data, the Vertex 4 is not as fast as some of the current generation 256GB drive but it is faster than many of the SSDs couple of years ago.


Similarly, the 4K random write of incompressible data is slower than current crops of SSDs but it is faster than the many of the older drives on the market.

Notice that RAID 0 does not help the performance in the random read and write. In fact, the performance actually took a little bit of hit. RAID 0 really will not help much performance at queue depth 1.

AS_SSD_4K-64KThrdRead AS_SSD_4K-64KThrdWrite

However, we can see the performance improvement as the number of threads increased.

AS_SSD_SequentialRead AS_SSD_SequentialWrite

With the AS SSD, we see the sequential write for the two drives in RAID actually offers almost double of the bandwidth compare to the single 128GB drive. If you are dealing with a lot read and write of incompressible data, then having two SSDs in RAID as oppose to a single faster drive could yield a very good performance improvement.

Crystal DiskMark

Crystal_DishMark_4k_Read Crystal_DishMark_4k_Write

The random read and write performance of the Vertex 450 is respectable for a 128GB drive where we can see that it is faster than the Kingston SSDNow V+ and V100. RAID does not help much when comes to small file read and write and thus, while there is small improvement compare to the single drive, the performance is still lagging behind the latest 256GB drives.

Crystal_DishMark_4k_Read_QD32  Crystal_DishMark_4k_Write_QD32

Higher queue depth again favors the RAID 0 configuration

Crystal_DishMark_512k_Read Crystal_DishMark_512k_Write

The 512K transfer benefited with RAID 0 configuration.

Crystal_DishMark_Sequential_Read Crystal_DishMark_Sequential_Write

The sequential read of the 120GB drive in CrystalMark is decent but the write lags behind the 240GB drive but it is worth noting that it is actually able to perform close to the 240GB Vertex 3. In RAID 0 configuration, we see a significant performance gain that is almost double of what we get from a single drive.



We turn to PCMark 07’s HD suite to assess the drive’s general usage performance. Here we can see that the Vertex 450 is still fast enough compare to other drives. It once again beats out many older 240GB drives from a couple of years ago. With two drives in RAID, it takes the top spot and offers about 5% improvement.

pcmark07_2 pcmark07_3 pcmark07_4 pcmark07_5 pcmark07_6 pcmark07_7 pcmark07_8

When we look at the individual tasks, we can see two drives in RAID 0 excels in benchmarks such as Importing Picture, Application Load, and Video Editing.

Looking at the model number of the OCZ Vertex 450 and you would be thinking that the product falls in the same family as the Vertex 4. However, the only thing that the Vertex 450 shares with the Vertex 4 is only the branding of Vertex. Other than that, the Vertex 450 actually is more closely related to the performance Vector series SSD that OCZ has launched late last year. The Vertex 450 uses the same Barefoot III (part number IDX500M10-BC) controller as the Vector but instead of using 25nm NAND MLC chip as the Vector, the…

Review Overview

Perforamnce - 8
Value - 9
Quality - 8.5
Features - 8.3
Innovation - 8.5


OCZ Vertex 450 128GB RAID 0

The OCZ Vertex 128GB offers good price and performance ratio. It is a good drive for those who are looking to replace their aging SSD or HDD.

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