Here is a Snipping screenshot of the ATTO Disk benchmark values (SATA3):Ĭompared to this result, the read performance in AHCI mode is significantly increased starting with a transfer size of 32k. The read and write (red) performace is in legacy IDE mode nearly identically, but in AHCI we see a much higher read performance. Here we see once again a huge difference between legacy IDE and AHCI, especially with this SSD. The ATTO disk benchmark values gives a very good overview about the write and read rate on different file sizes. Here is a comparison of the AS SSD benchmark values, which are getting updated with soon coming drives: Currently, the Crucial m4 256GB SSD is at the to of all result, which offered the highest sequential write performance, directly followed by the ADATA S511 120GB SSD. Here we see several SSDs in comparison to the ADATA S511 120GB 2.5″ SSD in IDE and in AHCI mode, whereby the diagram is updated shortly with new SSDs. The comparison of the AS SSD benchmark results is extended with each new HDD/SSD test. Here is a Snipping screenshot of the AS SSD iops results to measure the input/output speed (SATA3 IDE):Īnd here is a Snipping screenshot of the AS SSD iops results to measure the input/output speed, with a drastic rise in AHCI (SATA3 in AHCI mode): Here is a Snipping screenshot of the AS SSD benchmark results (SATA3 AHCI): ![]() We help you with questions to this topic or all other PC related questions at any time 24/7 in our PC Forum. It is better to install a fresh Windows7 or adjust at least the SSD Alignment. If you like to upgrade from HDD to SSD, you should not copy the content 1:1 only with a tool like Norton Ghost or Acronis Backup. Because if one like to save the new Windows installation, one must install the hard disk controller driver before changing SATA mode from IDE to AHCI – alternatively there are also Registry entries for it. Hint: Who think now about changing its SATA port in the BIOS from native IDE and/or legacy IDE to AHCI, should change first for example (if possible) only one part of the SATA port, where the drive with the operating system is not installed. In AHCI mode the ADATA S511 120GB reached to date the highest read performance of 503,56MB/s and a write performace of 158,78 MB/s which is almost identical to the legacy IDE result. Since the weighting of this value is very high in the AS-SSD benchmark tool,the total score in AHCI mode is with 488 points much higher than the previous one in IDE mode. Thus the benchmark program simulate for example a typical program start. 4K means that small 4K blocks are read and/or written and with the 4K 64Thrd this is distributed on 64 Threads at the same time. In AHCI mode also another result beneath the read performance was much higher than in the IDE mode and that is the important value “4K-64Thrd”. Here is a Snipping screenshot of the AS SSD benchmark results (SATA3 IDE): The overall score reached also in IDE mode very good 311 points, because for example the OCZ Agility 120GB SATA2 SSD reached only 138 points, the 256GB m4 SSD reached 291 points and a 256GB C300 SSD reached 290 points. The write performance in IDE mode was approximately 160 MB/s, which is slower than the SSDs previously tested. With other SSDs one can do a direct TRIM by filling and erasing the SSD data, but with A-DATA S511 SSD there was no recognizable TRIM after filling and erasing the cells procedure for cleaning the so-called “dirty cells”.Īlso in IDE mode the SSD exceeded with approximately 336 MB/s the maximum transfer rate of the Serial ATA 2.0 interface, so that a SATA3 interface is really the best choice for this SSD. The administration of the Dirty Cells is controlled in the background by the sandforce controller chip. Additionally the TRIM procedure of the SandForce 2281 controller is not as easy comprehensible as with previous SSDs. In IDE mode however in spite of correct SSD alignment the S511 reached like the Crucial C400 only a much slower performance. The S511 120GB ADATA SSD achieved in AHCI mode the highest sequential read performance. The SSD benchmark values offers a very good reference point of the maximal possible reading and writing performance, the speed with smaller files and the respective access time. The SSD drive speed was examined and compared with the following benchmark software: At present, Microsoft Windows 7 Ultimate Edition is used as the operating system. ![]() SATA2 drives are currently tested with an ASRock M3A790GXH/128M motherboard and SATA3 drives are currently tested with an ASRock 890GX Extreme3 motherboard. ![]() Let us continue with the benchmark results.
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