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OCZ Core Series 64GB SSD

OCZ Core Series 64GB SSD

Performance Testing

Atto disk benchmark

 
Transfer size
1024KB
2048KB
4096KB
8192KB
OCZ Core Series
64GB SSD
Read (MB/s)
129545
128768
129551
124322
Write (MB/s)
87112
87523
85948
83998
Seagate 7200.10 500GB
Read (MB/s)
69814
69905
69996
68391
Write (MB/s)
67361
64996
67277
65632
Western Digital
AAKS 640GB
Read (MB/s)
92556
92661
92667
93001
Write (MB/s)
90402
90551
90559
90558

Atto is a simple but popular synthetic benchmark for testing the maximum theoretical speed of storage devices. In this test the read speed of the OCZ SSD drive considerably outguns both of our mechanical drives. The Western Digital AAKS can catch up with the Core Series drive when it comes to write performance, but the Seagate falls far behind.

HD Tach 3.0.4.0

OCZ Core Series 64GB SSD

Seagate 7200.10 500GB

Western Digital AAKS 640GB

HD Tach is a benchmark able to show the sequential read speed across the entire capacity range. Mechanical drives get slower as the data is being moved towards the edge of the platters, in this test they start with their maximum sequential read speed and end with the minimum.

This is not the case for SSD drives however as they have no rotating platters or other moving parts therefore they can sustain maximum speed across the entire data range. Unfortunately HD Tach’s algorithm is not meant for testing SSD drives and the performance may appear scalable, but in reality it is constant across the entire data range and should be equal to the peak of the graph.

In this test the OCZ Core Series appears able to sustain a read speed of about 130MB/s, far more than the 93MB/s and 67.5MB/s the Western Digital and Seagate HDDs could respectively achieve. HD Tach is also able to record the random access time of the drives, which is where the true advantage of the SSD drive reveals itself. The OCZ Core Series SSD drive has a random access time of 0.4ms, while most mechanical 7200RPM drives hardly reach 12ms, which is around 30 times slower.

HD Tune Pro 3.00

OCZ Core Series 64GB SSD

Seagate 7200.10 500GB

Western Digital AAKS 640GB

In order to verify the results we achieved from HD Tach we used another similar benchmark, HD Tune Pro, which also features a better random access time test. HD Tune Pro gave us similar results to HD Tach on the sequential read and it widens the random access time performance gap, showing that the OCZ Core Series drive can achieve a random access time of 0.3ms.

It is noteworthy to mention that the access time the mechanical drives need in order to access data increases as their data moves towards the edge of the platter, while the OCZ drive has a steady and miniscule access speed across the entire data range.

Sisoft Sandra XII

OCZ Core Series 64GB SSD

Seagate 7200.10 500GB

Western Digital AAKS 640GB

Sandra is one of the most popular synthetic benchmarking suites. Here the OCZ Core Series SSD drive maintains a constant speed ratio of 125.38MB/s, while the mechanical drives fall far behind. Matter of fact the speed of the Seagate 7200.10 drive is less than half than that of the latest OCZ product. Unfortunately this benchmark cannot identify random access times below 1ms and all devices with a <1ms random access speed are simply rated as 1ms.

About Author

Stuart Davidson

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