Review OCZ Vector 150 SSD
For the original German review, see here.
The SATA-III interface rather than storage technology limits the performance of Solid State Drives more and more often. In theory, the maximum transfer rate is 600 MB/s, while 550 MB/s can be achieved in practice. Currently, only PCIe-SSDs, e.g., Plextor's M6 series in M.2 format is faster with read rates of above 700 MB/s.
As the performance limit of current SSDs is nearly completely exhausted with the SATA-III interface, OCZ turns to durability now. The Vector 150 features 19 nm MLC flash memory from Toshiba and an Indilinx Barefoot 3 controller. The durability is designed for data transfer of 50 GB per day. OCZ specifies a mean time between failure (MTBF) of 1.5 million hours. In addition, the warranty period of 5 years is inspiring confidence. This is longer than average, yet the current trend in this performance range.
Case
The build quality of the solid metal case is very good. It is easy to open the case by loosening four Phillips screws. However, you have to consider the loss of warranty if the seal is broken. The 7 mm high 2.5-inch drive can be incorporated in most notebooks and desktop computers. OCZ includes a 3.5-inch mounting frame and eight screws for the latter. The weight of 115 g (~4 oz.) is about on par with conventional hard drives'. So, it does not decrease the weight when used in notebooks.
We tested OCZ Vector models with 120 GB and 240 GB capacity. Currently, the price starts from about 105 Euros (0.88 Euros/GB) for the 120 GB model (~$144 and $1.2/GB) and just under 190 Euros (0.79 Euros/GB) for the 240 GB model (~$261 and $1.09/GB). Therefore, they are slightly more expensive than Samsung's 840 Pro or Plextor's M5.
Performance
We tested the models in the second drive slot of an Asus N76VZ with a SATA-6G-port (max. 6 Gbit/s). In addition, we ran several benchmarks and power consumption measurements on a desktop system (also with SATA-6G) to compare the values. The results of both systems are within measurement accuracy and the performance does not differ beyond that. We primarily compared the results of the test drives to the very popular Samsung SSD 840 Pro.
Sequential data rates
The sequential data rates are very close to the selected comparison devices. With 500 MB/s, both Vector 150 models read very fast. However, the 120 GB model is about 40-60 MB/s slower in writing.
AS SSD | |
Seq Write (sort by value) | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
Samsung SSD 840 Pro 256 GB Desktop | |
OCZ Vector 150 120 GB | |
OCZ Vector 150 240 GB | |
Seq Read (sort by value) | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
Samsung SSD 840 Pro 256 GB Desktop | |
OCZ Vector 150 120 GB | |
OCZ Vector 150 240 GB |
CrystalDiskMark 3.0 | |
Write Seq (sort by value) | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
Samsung SSD 840 Pro 256 GB Desktop | |
OCZ Vector 150 120 GB | |
OCZ Vector 150 240 GB | |
Read Seq (sort by value) | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
Samsung SSD 840 Pro 256 GB Desktop | |
OCZ Vector 150 120 GB | |
OCZ Vector 150 240 GB |
Data transfer
In average transfer rates, the difference to the Samsung SSD 840 Pro is rather high. For example, when moving data between two drives, the difference of about 130 MB/s (in HD Tune) is apparent. The OCZ Vertex 4 also with an Indilinx Everest 2 Controller from the same manufacturer is about on par.
The result is significantly better in the ATTO Disk benchmark. The OCZ Vector 150 with 240 GB capacity achieved the maximum data rate here. With 555 MB/s, it is only slightly faster than the alternative from Samsung. In writing, it is even significantly faster with 533 MB/s to 468 MB/s.
HD Tune Transfer Rate Average - Transfer Rate Average (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vertex 4 256 GB Desktop | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB |
ATTO Disk Benchmark | |
8192KB read (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 240 GB | |
8192KB write (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 240 GB |
4K performance
In random access to 4 GB files, both OCZ Vector 150 models perform more or less worse than the Samsung SSD 840 Pro. The 240 GB model is only slightly better than the Samsung model in writing 4K blocks.
AS SSD | |
4K-64 Write (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB | |
4K-64 Read (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB | |
4K Write (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB | |
4K Read (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB |
CrystalDiskMark 3.0 | |
Write 4k QD32 (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB | |
Read 4k QD32 (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB |
Copy performance
The results of the copy performance test of the AS SSD benchmarks differ significantly. In our five runs, we saw differences up to 100 MB/s. We compare the best results with each other. While Samsung's SSD 840 Pro performs significantly better in copying ISO files, the copy performance of programs and games is nearly on par.
AS SSD | |
Copy Game MB/s (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB | |
Copy Program MB/s (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB | |
Copy ISO MB/s (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB |
Access times
The Toshiba HG5d is slightly slower in our measurements, but this will have little relevance in practice. Compared to conventional hard drives, which usually have values of 15 to 19 ms, about 0.1 ms is very low. This advantage gets apparent in everyday tasks, especially opening files and programs, which are significantly more responsive.
AS SSD | |
Access Time Write (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB | |
Access Time Read (sort by value) | |
Samsung SSD 840 Pro 256 GB Desktop | |
Toshiba HG5d THNSNH256GCST 256 GB SSD | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB |
* ... smaller is better
The software IOMeter delivers more realistic results under standard use and heavy workstation load. The profiles "IOMix" and "Workstation" simulate different drive usage scenarios of typical users and workstation users. During the IOMix test, a 10 GB partition is intensively used and during the Workstation test, it is used intensively for 3 minutes. Both Vector 150 models can achieve very good results here and outperform the reviewed competition in nearly every test. The smaller Vector 150 is only beaten by the OCZ Vertex 4 from the same manufacturer in IOMix.
IOMeter | |
Workstation, 3min, 10GB Partition (sort by value) | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB | |
Samsung SSD 840 250 GB Desktop | |
Samsung SSD 840 Pro 256 GB Desktop | |
OCZ Vertex 4 256 GB Desktop | |
Intel SSD 520 Series 240GB Desktop | |
IOMix, 5min, 10GB Partition (sort by value) | |
OCZ Vector 150 240 GB | |
OCZ Vector 150 120 GB | |
Samsung SSD 840 250 GB Desktop | |
Samsung SSD 840 Pro 256 GB Desktop | |
OCZ Vertex 4 256 GB Desktop | |
Intel SSD 520 Series 240GB Desktop |
Performance Loss
As a stress test, we ran the IOMix profile over the whole SSD to simulate the performance loss of a non-empty SSD under load. SSDs with over provisioning (special replacement area) should perform better here. The test models have an 8 GB and a 16 GB bigger over-provisioning area than its predecessors. Contrary to the Samsung Magician software, the OCZ toolbox does not allow to increase this memory area even more.
Both Vector 150 models performed very well here. With above 90 MB/s the 120 GB model is not as stable as the 240 GB model with 127 MB/s, but both results are significantly better than the Samsung 830's (37 MB/s), 840's (51 MB/s), and 840 Pro's (49 MB/s). Intel's SSD-520 series is still unbeaten in our stress test with 206 MB/s.
Power Consumption
The power consumption is crucial for use in notebooks. Compared to conventional hard drives, many SSDs profit especially from low power consumption under load. With the HG5d, Toshiba offers a very frugal drive with a maximum of only 1.48 Watts and 1.7 Watts. Both Vector 150 models cannot keep up with it with 2.4 to 2.99 Watts. Apparently, the Indilinx Barefoot 3 controller needs significantly more energy under load than the Marvell controller of the Toshiba. The 19 nm MLC flash memory used by Toshiba in both models is unlikely the reason. The results are slightly different while idle. Although they do not belong to the top models with 0.53 to 0.58 Watts (Samsung SSD 470: 0.27 Watts), they perform significantly better than many competitors. We also measured the power consumption of the 120 GB when connected to a SATA II interface. Apart from the expected performance loss (max. 255 MB/s), the power consumption falls dramatically.
Verdict
The OCZ Vector 150 is an attractive alternative to many competitors. In particular, the two test models perform significantly better than most of the reviewed competitors under constant load. Although the drive cannot achieve absolute top values in performance, it belongs to the upper range. The good, yet not outstanding power consumption does not contradict use in notebooks. But, if battery life is most important, there are better alternatives out there. If you go for an OCZ Vector 150 model, the 240 GB is the more balanced bundle. Besides better write performance and bigger capacity, you will profit from the better Euros per GB ratio.
The OCZ Vector 150 with 120 GB is currently available for 115 Euros (~$158) at Amazon.de.